Copper Alloys•Cartridge Brass•

VERIFIED(Source-Verified)

C26000 Cartridge Brass 70/30

Primary Designation:UNS C26000

Aliases:

Cartridge Brass 70/3070-30 BrassSpinning BrassC26000

Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification or guaranteed lot conformity. Read engineering disclaimer →

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Data Completeness:4 composition elements and 135 condition-specific property values cataloged.

Omitted fields represent unverified properties. "Missing is better than invented."

Key Engineering Properties

Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.

Density

8.525 g/cm³TYPICAL · at 20 °C

Electrical Conductivity

28 % IACSTYPICAL · at 20 °C

Thermal Conductivity

121.15 W/(m·K)TYPICAL · at 20 °C

Specific Heat Capacity

376.8 J/(kg·K)TYPICAL · at 20 °C

Melting Range (Solidus / Liquidus)

915.6 – 954.4 °C1680.0 – 1750.0 °F

Solidus: 915.6°C | Liquidus: 954.4°C

Composition Excerpt

Cu 68.5–71.5 wt%Copper (range)

Standard Elemental Basis: RANGE

Engineering Summary

UNS C26000 Cartridge Brass (70Cu-30Zn) exhibits the highest ductility and cold-workability of all brasses. Widely specified for deep-drawn shell casings, radiator cores, plumbing fittings, and stamped hardware, it provides a warm golden color, 28% IACS conductivity, and excellent acoustic and mechanical resonance characteristics.

C26000 Cartridge Brass 70/30 Documented Applications

›Air Pressure Conveyer Systems: Forming Characteristics
›Air Pressure Conveyer Systems: Mechanical Properties
›Ammunition Cartridge Cases: Corrosion Resistance
›Ammunition Cartridge Cases: Drawing Characteristics
›Ammunition Cartridge Cases: Mechanical Properties
›Architecture: Grillwork
›Automotive: Electrical Connectors
›Bathroom Fixtures: Forming Characteristics
›Bathroom Fixtures: Mechanical Properties
›Bead Chain: Corrosion Resistance
›Bead Chain: Forming Characteristics
›Bead Chain: Mechanical Properties

Recognized Aliases

Source-backed commercial trade name and short designations cataloged in canonical data.

Cartridge Brass 70/3070-30 BrassSpinning BrassC26000

C26000 Cartridge Brass 70/30 Specifications & Designations

Standard Designations & Applicable Specifications — Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.

Direct Standard DesignationsDIRECT DESIGNATION

2 Primary Identifiers

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System	Identifier	Standard System Name	Classification Notes & Provenance
UNSPRIMARY	C26000	Unified Numbering System	Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C26000)
CDA	Alloy 260	Copper Development Association Alloy Number	CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C26000)

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

5 Listed

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Recognized Name / Alias	Classification	Technical Usage & Context
Cartridge Brass	Standard Commercial Name	CDA Standard Commercial Name
Cartridge Brass 70/30	Commercial Alias	Colloquial or commercial industry synonym
70-30 Brass	Commercial Alias	Colloquial or commercial industry synonym
Spinning Brass	Commercial Alias	Colloquial or commercial industry synonym
C26000	Commercial Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

12 Applicable Standards

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Standards Body	Specification Code	Specification Title / Scope	Relationship Type
ASTM	ASTM B36/B36M	BRASS PLATE, SHEET, STRIP AND ROLLED BAR	Specification Reference
SAE	SAE J463	WROUGHT COPPER AND COPPER ALLOYS	Specification Reference
ASTM	ASTM B19	CARTRIDGE BRASS SHEET, STRIP, PLATE, BAR AND DISKS	Specification Reference
SAE	SAE J461	WROUGHT AND CAST COPPER ALLOYS	Specification Reference
FEDERAL	FEDERAL QQ-B-650	BRAZING ALLOY, COPPER, COPPER-ZINC, AND COPPER-PHOSPHORUS	Specification Reference
ASTM	ASTM B129	CARTRIDGE BRASS CARTRIDGE CASE CUPS	Specification Reference
MILITARY	MILITARY MIL-C-10375	CUPS, CASE, CARTRIDGE, COPPER ALLOY (FOR SMALL ARMS AMMUNITION)	Specification Reference
AMS	AMS 4505	BRASS SHEET, STRIP AND PLATE, ANNEALED	Specification Reference
AMS	AMS 4507	BRASS SHEET, STRIP AND PLATE, HALF-HARD	Specification Reference
ASTM	ASTM B927/B927M	BRASS ROD, BAR, AND SHAPES	Specification Reference
AMS	AMS 4508	BRASS SHEET, LAMINATED SURFACE BONDED	Specification Reference
MILITARY	MILITARY MIL-S-22499	SHIM STOCK, LAMINATED	Specification Reference

Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.

C26000 Cartridge Brass 70/30 Chemical Composition

Chemical Composition (Weight %) — Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).

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Element	Symbol	Atomic No.	Semantic Basis	Specified Value	Unit	Metallurgical Notes & Qualification	Data Status
Copper	Cu	29	RANGE	68.50 – 71.50	wt%	CDA chemical composition specification limits for C26000: 68.5 - 71.5 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Lead	Pb	82	MAXIMUM	≤ 0.07	wt%	CDA chemical composition specification limits for C26000: max 0.07 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Zinc	Zn	30	BALANCE	Balance	wt%	Remainder element (Zinc).Ref: Copper Development Association (CDA)	VERIFIED
Iron	Fe	26	MAXIMUM	≤ 0.05	wt%	CDA chemical composition specification limits for C26000: max 0.05 wt%.Ref: Copper Development Association (CDA)	VERIFIED

* Elemental percentages are expressed in weight percent (wt%). Values represent applicable specification limits. Unspecified trace elements are not fabricated or assumed.Preserves exact semantic basis

Property Display UnitsSwitch between Canonical SI and Source / US Customary units:

C26000 Cartridge Brass 70/30 Physical Properties

Source-specific physical properties. Test temperatures are shown only where reported.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Density	8.525 g/cm³	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Density 0.308 lb/cu in. at 68°F (8.525 g/cm³ at 20°C)	0.308 lb/cu in. at 68°F	Copper Development Association Inc.	VERIFIED

C26000 Cartridge Brass 70/30 Thermal & Thermodynamic Properties

Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.

7 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Liquidus Temperature	954.4 °C	TYPICAL	CDA Physical Properties: Liquidus temperature 1750.0 °F (954.4 °C)	1750.0 °F	Copper Development Association Inc.	VERIFIED
Solidus Temperature	915.6 °C	TYPICAL	CDA Physical Properties: Solidus temperature 1680.0 °F (915.6 °C)	1680.0 °F	Copper Development Association Inc.	VERIFIED
Thermal Conductivity	121.15 W/(m·K)	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 70.0 Btu/(ft·hr·°F) (121.15 W/(m·K) at 20°C)	70.0 Btu/ sq ft/ ft hr/ °F at 68°F	Copper Development Association Inc.	VERIFIED
Coefficient of Thermal Expansion (CTE)	19.98 µm/(m·K)	TYPICAL	CDA Physical Properties: CTE 11.1 µin/(in·°F) (19.98 µm/(m·K)) over range 68-57210°F	11.1 10^-6 per °F	Copper Development Association Inc.	VERIFIED
Specific Heat Capacity	376.8 J/(kg·K)	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Specific heat 0.09 Btu/(lb·°F) (376.8 J/(kg·K))	0.09 Btu/ lb /°F at 68°F	Copper Development Association Inc.	VERIFIED
Annealing Temperature Range	426.7 – 760 °C	RANGE	CDA Thermal Treatments: Annealing temperature range 800 - 1400°F (426.7 - 760.0°C)	800 – 1400 °F	Copper Development Association Inc.	VERIFIED
Hot Working Temperature Range	732.2 – 843.3 °C	RANGE	CDA Thermal Treatments: Hot working range 1350 - 1550°F (732.2 - 843.3°C)	1350 – 1550 °F	Copper Development Association Inc.	VERIFIED

C26000 Cartridge Brass 70/30 Electrical Properties

Electrical conductivity and resistivity in their reported units and conditions.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Electrical Conductivity	28 % IACS	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Volume conductivity 28.0 % IACS at 68°F (20°C)	28.0 % IACS at 68°F	Copper Development Association Inc.	VERIFIED

C26000 Cartridge Brass 70/30 Mechanical Properties

Contextual Mechanical Properties & Tempers: Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.

Elastic & Baseline Mechanical ConstantsSource-specific measurement conditions

Modulus of Elasticity (Tension)

110.3 GPa

CDA Physical Properties: Elastic modulus in tension 16000.0 ksi (110.3 GPa)

Modulus of Rigidity

41368.5 MPa

CDA Physical Properties: Shear modulus 6000.0 ksi (41368.5 MPa)

Machinability Rating

30 %

CDA Fabrication Properties: Rating relative to Free-Cutting Brass (C36000 = 100%).

Product Form:

Temper / Condition:

Showing 47 of 47 conditions

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Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Flat Products	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 427.5 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H02	0.04	427.5 MPa	—	25 %	—	—	—	VERIFIED
Flat Products	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 70 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 65 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 275.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 124.1 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H02	0.04	—	—	—	275.8 MPa	124.1 MPa	70 HRB65 HR30T	VERIFIED
Flat Products	1/4 Hard (H01) · 20 °C Source values and qualifiers Tensile Strength: 372.3 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 43 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H01	0.04	372.3 MPa	275.8 MPa	43 %	—	—	—	VERIFIED
Flat Products	1/4 Hard (H01) Source values and qualifiers Rockwell B Hardness: 55 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 54 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 248.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H01	0.04	—	—	—	248.2 MPa	—	55 HRB54 HR30T	VERIFIED
Flat Products	Extra Hard (H06) · 20 °C Source values and qualifiers Tensile Strength: 592.9 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 448.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 5 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H06	0.04	592.9 MPa	448.2 MPa	5 %	—	—	—	VERIFIED
Flat Products	Extra Hard (H06) Source values and qualifiers Rockwell B Hardness: 88 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 76 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 317.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H06	0.04	—	—	—	317.2 MPa	—	88 HRB76 HR30T	VERIFIED
Flat Products	Extra Spring (H10) · 20 °C Source values and qualifiers Tensile Strength: 682.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 448.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 3 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H10	0.04	682.6 MPa	448.2 MPa	3 %	—	—	—	VERIFIED
Flat Products	Extra Spring (H10) Source values and qualifiers Rockwell B Hardness: 93 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 78 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H10	0.04	—	—	—	—	—	93 HRB78 HR30T	VERIFIED
Flat Products	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 524 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 434.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 8 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H04	0.04	524 MPa	434.4 MPa	8 %	—	—	—	VERIFIED
Flat Products	Hard (H04) Source values and qualifiers Rockwell B Hardness: 82 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 73 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 303.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 144.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H04	0.04	—	—	—	303.4 MPa	144.8 MPa	82 HRB73 HR30T	VERIFIED
Flat Products	Nominal Grain Size 0.015 mm (OS015) · 20 °C Source values and qualifiers Tensile Strength: 365.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 151.7 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 54 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS015	0.04	365.4 MPa	151.7 MPa	54 %	—	—	—	VERIFIED
Flat Products	Nominal Grain Size 0.015 mm (OS015) Source values and qualifiers Rockwell F Hardness: 78 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 43 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 241.3 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 96.5 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — OS015	0.04	—	—	—	241.3 MPa	96.5 MPa	78 HRF43 HR30T	VERIFIED
Flat Products	Nominal Grain Size 0.025 mm (OS025) · 20 °C Source values and qualifiers Tensile Strength: 351.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 131 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 55 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS025	0.04	351.6 MPa	131 MPa	55 %	—	—	—	VERIFIED
Flat Products	Nominal Grain Size 0.025 mm (OS025) Source values and qualifiers Rockwell F Hardness: 72 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 36 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS025	0.04	—	—	—	—	—	72 HRF36 HR30T	VERIFIED
Flat Products	Nominal Grain Size 0.035 mm (OS035) · 20 °C Source values and qualifiers Tensile Strength: 337.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 117.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 57 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS035	0.04	337.8 MPa	117.2 MPa	57 %	—	—	—	VERIFIED
Flat Products	Nominal Grain Size 0.035 mm (OS035) Source values and qualifiers Rockwell F Hardness: 68 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 31 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 234.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 96.5 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — OS035	0.04	—	—	—	234.4 MPa	96.5 MPa	68 HRF31 HR30T	VERIFIED
Flat Products	Nominal Grain Size 0.050 mm (OS050) · 20 °C Source values and qualifiers Tensile Strength: 324.1 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 103.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 62 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS050	0.04	324.1 MPa	103.4 MPa	62 %	—	—	—	VERIFIED
Flat Products	Nominal Grain Size 0.050 mm (OS050) Source values and qualifiers Rockwell F Hardness: 64 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 26 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS050	0.04	—	—	—	—	—	64 HRF26 HR30T	VERIFIED
Flat Products	Nominal Grain Size 0.070 mm (OS070) · 20 °C Source values and qualifiers Tensile Strength: 317.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 96.5 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 65 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS070	0.04	317.2 MPa	96.5 MPa	65 %	—	—	—	VERIFIED
Flat Products	Nominal Grain Size 0.070 mm (OS070) Source values and qualifiers Rockwell F Hardness: 58 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 15 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 220.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 89.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — OS070	0.04	—	—	—	220.6 MPa	89.6 MPa	58 HRF15 HR30T	VERIFIED
Flat Products	Nominal Grain Size 0.100 mm (OS100) · 20 °C Source values and qualifiers Tensile Strength: 303.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 75.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 66 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — OS100	0.04	303.4 MPa	75.8 MPa	66 %	—	—	—	VERIFIED
Flat Products	Nominal Grain Size 0.100 mm (OS100) Source values and qualifiers Rockwell F Hardness: 54 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 11 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 89.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — OS100	0.04	—	—	—	—	89.6 MPa	54 HRF11 HR30T	VERIFIED
Flat Products	Spring (H08) · 20 °C Source values and qualifiers Tensile Strength: 648.1 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 448.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 3 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H08	0.04	648.1 MPa	448.2 MPa	3 %	—	—	—	VERIFIED
Flat Products	Spring (H08) Source values and qualifiers Rockwell B Hardness: 91 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 77 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 330.9 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 158.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H08	0.04	—	—	—	330.9 MPa	158.6 MPa	91 HRB77 HR30T	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 482.6 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — H02	1	482.6 MPa	—	30 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 80 HRB (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 289.6 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Fatigue Strength: 151.7 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H02	1	—	—	—	289.6 MPa	151.7 MPa	80 HRB	VERIFIED
Rod	1/8 Hard (H00) · 20 °C Source values and qualifiers Tensile Strength: 379.2 MPa (TYPICAL)Section Size: 1; Cold Work: 6%; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 1; Cold Work: 6%; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 48 % (TYPICAL)Section Size: 1; Cold Work: 6%; Section Size: 1 inCopper Development Association (CDA) — H00	1	379.2 MPa	275.8 MPa	48 %	—	—	—	VERIFIED
Rod	1/8 Hard (H00) Source values and qualifiers Rockwell B Hardness: 60 HRB (TYPICAL)Section Size: 1; Cold Work: 6%; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 248.2 MPa (TYPICAL)Section Size: 1; Cold Work: 6%; Section Size: 1 inCopper Development Association (CDA) — H00	1	—	—	—	248.2 MPa	—	60 HRB	VERIFIED
Rod	Nominal Grain Size 0.050 mm (OS050) · 20 °C Source values and qualifiers Tensile Strength: 330.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 110.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 65 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — OS050	1	330.9 MPa	110.3 MPa	65 %	—	—	—	VERIFIED
Rod	Nominal Grain Size 0.050 mm (OS050) Source values and qualifiers Rockwell F Hardness: 65 HRF (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 234.4 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — OS050	1	—	—	—	234.4 MPa	—	65 HRF	VERIFIED
Tube	Hard Drawn (H80) · 20 °C Source values and qualifiers Tensile Strength: 537.8 MPa (TYPICAL)Cold Work: 35%Copper Development Association (CDA) — Elongation: 8 % (TYPICAL)Cold Work: 35%Copper Development Association (CDA) — H80	—	537.8 MPa	—	8 %	—	—	—	VERIFIED
Tube	Hard Drawn (H80) Source values and qualifiers Rockwell B Hardness: 82 HRB (TYPICAL)Cold Work: 35%Copper Development Association (CDA) — Rockwell 30T Hardness: 73 HR30T (TYPICAL)Cold Work: 35%Copper Development Association (CDA) — H80	—	—	—	—	—	—	82 HRB73 HR30T	VERIFIED
Tube	Nominal Grain Size 0.025 mm (OS025) · 20 °C Source values and qualifiers Tensile Strength: 358.5 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 137.9 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 55 % (TYPICAL)Copper Development Association (CDA) — OS025	—	358.5 MPa	137.9 MPa	55 %	—	—	—	VERIFIED
Tube	Nominal Grain Size 0.025 mm (OS025) Source values and qualifiers Rockwell F Hardness: 75 HRF (TYPICAL)Copper Development Association (CDA) — Rockwell 30T Hardness: 40 HR30T (TYPICAL)Copper Development Association (CDA) — OS025	—	—	—	—	—	—	75 HRF40 HR30T	VERIFIED
Tube	Nominal Grain Size 0.050 mm (OS050) · 20 °C Source values and qualifiers Tensile Strength: 324.1 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 103.4 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 65 % (TYPICAL)Copper Development Association (CDA) — OS050	—	324.1 MPa	103.4 MPa	65 %	—	—	—	VERIFIED
Tube	Nominal Grain Size 0.050 mm (OS050) Source values and qualifiers Rockwell F Hardness: 64 HRF (TYPICAL)Copper Development Association (CDA) — Rockwell 30T Hardness: 26 HR30T (TYPICAL)Copper Development Association (CDA) — OS050	—	—	—	—	—	—	64 HRF26 HR30T	VERIFIED
Wire	1/4 Hard (H01) · 20 °C Source values and qualifiers Tensile Strength: 482.6 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — H01	0.08	482.6 MPa	—	20 %	—	—	—	VERIFIED
Wire	1/8 Hard (H00) · 20 °C Source values and qualifiers Tensile Strength: 399.9 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 35 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — H00	0.08	399.9 MPa	—	35 %	—	—	—	VERIFIED
Wire	1/8 Hard (H00) Source values and qualifiers Shear Strength: 262 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — H00	0.08	—	—	—	262 MPa	—	—	VERIFIED
Wire	Extra Hard (H06) · 20 °C Source values and qualifiers Tensile Strength: 854.9 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 4 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — H06	0.08	854.9 MPa	—	4 %	—	—	—	VERIFIED
Wire	Nominal Grain Size 0.015 mm (OS015) · 20 °C Source values and qualifiers Tensile Strength: 372.3 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 56 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — OS015	0.08	372.3 MPa	—	56 %	—	—	—	VERIFIED
Wire	Nominal Grain Size 0.025 mm (OS025) · 20 °C Source values and qualifiers Tensile Strength: 358.5 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 58 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — OS025	0.08	358.5 MPa	—	58 %	—	—	—	VERIFIED
Wire	Nominal Grain Size 0.035 mm (OS035) · 20 °C Source values and qualifiers Tensile Strength: 344.7 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 60 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — OS035	0.08	344.7 MPa	—	60 %	—	—	—	VERIFIED
Wire	Nominal Grain Size 0.035 mm (OS035) Source values and qualifiers Shear Strength: 234.4 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — OS035	0.08	—	—	—	234.4 MPa	—	—	VERIFIED
Wire	Nominal Grain Size 0.050 mm (OS050) · 20 °C Source values and qualifiers Tensile Strength: 330.9 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 64 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — OS050	0.08	330.9 MPa	—	64 %	—	—	—	VERIFIED
Wire	Spring (H08) · 20 °C Source values and qualifiers Tensile Strength: 896.3 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Elongation: 3 % (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — H08	0.08	896.3 MPa	—	3 %	—	—	—	VERIFIED
Wire	Spring (H08) Source values and qualifiers Shear Strength: 413.7 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 inCopper Development Association (CDA) — Fatigue Strength: 151.7 MPa (TYPICAL)Section Size: 0.08; Section Size: 0.08 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H08	0.08	—	—	—	413.7 MPa	151.7 MPa	—	VERIFIED

Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.

Source: See fact-level citations

C26000 Cartridge Brass 70/30 Processing & Fabrication

Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.

Source: Copper Development Association (CDA)

Machinability

Machinability rating: 30% relative to free-cutting brass (C36000 = 100%).

Weldability & Joining

Soldering: Excellent; Brazing: Excellent; Oxyacetylene Welding: Good; Gas Shielded Arc Welding: Good; Coated Metal Arc Welding: Not Recommended; Spot Weld: Fair; Seam Weld: Not Recommended; Butt Weld: Good

Heat Treatment & Working Ranges

Annealing temperature range: 426.7°C to 760.0°C (800°F - 1400°F). Hot working temperature range: 732.2°C to 843.3°C (1350°F - 1550°F).

Forming & Cold Working

Capacity for Being Cold Worked: Excellent. Capacity for Being Hot Formed: Fair.

Practical Engineering & Fabrication Notes

By Mat Grades Editorial Desk · Updated 2026-11-14. Use alongside the specified product standard and supplier certificate.

Machining & shop-floor behavior

Choose C26000 primarily for its ability to form, not because all brass cuts like free-machining bar. Austral Wright rates its machinability at about 30% of free-cutting brass and describes excellent cold workability. For a part needing substantial turning followed by forming, quote both operations together. Identify which operation creates the difficult feature before choosing the stock. Ask the shop to check chip control and burr removal on the actual geometry rather than transferring a cycle time from another brass grade.

Weldability, brazing & joining

The supplier rates soldering and brazing favorably, while gas-shielded arc welding is rated fair and coated-metal arc welding is not recommended. Select the joining process before finalizing the component. Record the required joint performance and inspection method on the drawing. When comparing a joined construction with a single formed part, include the cost of preparation, cleaning and inspection. A favorable process rating is a screening aid; it does not qualify a joint for a particular pressure or structural duty.

Corrosion & service environment

Watch for ammonia-related stress corrosion and dezincification in stagnant salt or acidic solutions. These are reasons to check the actual fluid and cleaning chemicals, not just the normal ambient conditions. A formed component also needs a review of residual stress. Ask the material supplier about compatibility before using C26000 in a new wet-service application. The familiar appearance of yellow brass does not identify its suitability for a particular environment.

Selection trade-offs & applications

Drawn containers, electrical terminals and decorative fittings are established applications. C36000 is worth considering when cutting dominates the process; it should not be assumed to offer the same forming behavior. Start a selection review with a simple operation list: blanking, drawing, trimming, machining, joining and finishing. Mark the critical dimension and acceptance check at each step. Compare the finished component cost, not only the raw material price. Keep product form and temper in the procurement specification so that a later supplier change does not silently alter the manufacturing trial.

Technical references: Austral Wright Metals: C26000 70/30 brass

C26000 Cartridge Brass 70/30 Equivalent & Comparable Grades

Comparable Grades & Cross-References: Carefully classified cross-reference relationships for C26000 Cartridge Brass 70/30. Comparable does not mean equivalent.

Scroll horizontally for relationship classifications & comparisons

Related Material	Family	Relationship Classification	Metallurgical Notes & Differences	Status
C36000 Free-Cutting Brass	Copper Alloys	Commonly Compared	C26000 (Cartridge Brass 70/30) is a single-phase alpha brass with the highest cold-ductility of all brasses, ideal for deep-drawing. C36000 is an alpha-beta leaded brass engineered specifically for automatic screw machining (100% machinability rating vs 30% for C26000).Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C26800 Yellow Brass 66%	Copper Alloys	Commonly Compared	C26000 (70/30) provides maximum deep-drawing cold ductility; C26800 (66/34) is an economical commercial alternative for shallow drawing and stamping.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C28000 Muntz Metal 60/40	Copper Alloys	Commonly Compared	C26000 is single-phase alpha brass for severe cold drawing; C28000 is two-phase duplex alpha-beta brass for hot forging and hot stamping.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED

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Sources

Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.

Copper Development Association Inc.CDA Alloy C26000 Property & Specification Profile

AUTHORITATIVE BODY

Copper Development Association authoritative technical reference profile for C26000 Cartridge Brass 70/30.

Issuing Body: Copper Development Association (CDA)View Source Record ↗

Copper Development Association Inc.CDA UNS Standard Designations Register (C26000)

AUTHORITATIVE BODY

Unified Numbering System (UNS) designation registration register confirming active C26000 status.

Issuing Body: Copper Development Association (CDA)View Source Record ↗

Intellectual Property & Provenance Notice: Mat Grades cites technical literature from recognized industry associations and standards organizations. Underlying technical standards and publication data remain the intellectual property of their respective issuing organizations.