Copper Alloys•Free-Machining Brass•

VERIFIED(Source-Verified)

C36000 Free-Cutting Brass

Primary Designation:UNS C36000

Aliases:

Free-Cutting BrassFree-Machining BrassHigh-Speed BrassC36000

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 97 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

8.498 g/cm³TYPICAL · at 20 °C

Electrical Conductivity

26 % IACSTYPICAL · at 20 °C

Thermal Conductivity

115.96 W/(m·K)TYPICAL · at 20 °C

Specific Heat Capacity

376.8 J/(kg·K)TYPICAL · at 20 °C

Melting Range (Solidus / Liquidus)

887.8 – 898.9 °C1630.0 – 1650.0 °F

Solidus: 887.8°C | Liquidus: 898.9°C

Composition Excerpt

Cu 60–63 wt%Copper (range)

Standard Elemental Basis: RANGE

Engineering Summary

UNS C36000 Free-Cutting Brass (61.5Cu-35.5Zn-3Pb) defines the global benchmark 100% standard against which all copper alloy machinability is measured. Highly dispersed microscopic lead globules act as natural internal chip-breakers and tool lubricants, enabling high feed rates, clean thread cutting, and exceptional tool life in high-speed automatic screw machines.

C36000 Free-Cutting Brass Documented Applications

›Adapters: Machining Characteristics
›Adapters: Mechanical Properties
›Adapters: Solderability
›Architecture: Terrazzo Strip
›Automatic Screw Machine Parts: Corrosion Resistance
›Automatic Screw Machine Parts: Machining Characteristics
›Automatic Screw Machine Parts: Mechanical Properties
›Automotive: Fluid Connectors
›Bolts: Machining Characteristics
›Bolts: Mechanical Properties
›Builders Hardware: Fittings
›Consumer: Hot Combs (to Straighten Hair)

Recognized Aliases

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

Free-Cutting BrassFree-Machining BrassHigh-Speed BrassC36000

C36000 Free-Cutting Brass 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	C36000	Unified Numbering System	Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C36000)
CDA	Alloy 360	Copper Development Association Alloy Number	CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C36000)

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

4 Listed

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Recognized Name / Alias	Classification	Technical Usage & Context
Free-Cutting Brass	Standard Commercial Name	CDA Standard Commercial Name
Free-Machining Brass	Commercial Alias	Colloquial or commercial industry synonym
High-Speed Brass	Commercial Alias	Colloquial or commercial industry synonym
C36000	Commercial Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

5 Applicable Standards

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Standards Body	Specification Code	Specification Title / Scope	Relationship Type
SAE	SAE J461	WROUGHT AND CAST COPPER ALLOYS	Specification Reference
AMS	AMS 4610	BRASS BARS AND RODS, FREE CUTTING, HALF-HARD	Specification Reference
SAE	SAE J463	WROUGHT COPPER AND COPPER ALLOYS	Specification Reference
ASTM	ASTM B16/B16M	FREE-CUTTING BRASS ROD, BAR AND SHAPES FOR USE IN SCREW MACHINES	Specification Reference
MILITARY	MILITARY MIL-V-18436	VALVES, CHECK, BRONZE	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.

C36000 Free-Cutting Brass 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	60.00 – 63.00	wt%	CDA chemical composition specification limits for C36000: 60.0 - 63.0 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Lead	Pb	82	RANGE	2.50 – 3.00	wt%	CDA chemical composition specification limits for C36000: 2.5 - 3.0 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	≤ 0.35	wt%	CDA chemical composition specification limits for C36000: max 0.35 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:

C36000 Free-Cutting Brass 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	8.498 g/cm³	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Density 0.307 lb/cu in. at 68°F (8.498 g/cm³ at 20°C)	0.307 lb/cu in. at 68°F	Copper Development Association Inc.	VERIFIED

C36000 Free-Cutting Brass 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	898.9 °C	TYPICAL	CDA Physical Properties: Liquidus temperature 1650.0 °F (898.9 °C)	1650.0 °F	Copper Development Association Inc.	VERIFIED
Solidus Temperature	887.8 °C	TYPICAL	CDA Physical Properties: Solidus temperature 1630.0 °F (887.8 °C)	1630.0 °F	Copper Development Association Inc.	VERIFIED
Thermal Conductivity	115.96 W/(m·K)	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 67.0 Btu/(ft·hr·°F) (115.96 W/(m·K) at 20°C)	67.0 Btu/ sq ft/ ft hr/ °F at 68°F	Copper Development Association Inc.	VERIFIED
Coefficient of Thermal Expansion (CTE)	20.52 µm/(m·K)	TYPICAL	CDA Physical Properties: CTE 11.4 µin/(in·°F) (20.52 µm/(m·K)) over range 68-57210°F	11.4 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 – 593.3 °C	RANGE	CDA Thermal Treatments: Annealing temperature range 800 - 1100°F (426.7 - 593.3°C)	800 – 1100 °F	Copper Development Association Inc.	VERIFIED
Hot Working Temperature Range	704.4 – 787.8 °C	RANGE	CDA Thermal Treatments: Hot working range 1300 - 1450°F (704.4 - 787.8°C)	1300 – 1450 °F	Copper Development Association Inc.	VERIFIED

C36000 Free-Cutting Brass 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	26 % IACS	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Volume conductivity 26.0 % IACS at 68°F (20°C)	26.0 % IACS at 68°F	Copper Development Association Inc.	VERIFIED

C36000 Free-Cutting Brass 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)

96.5 GPa

CDA Physical Properties: Elastic modulus in tension 14000.0 ksi (96.5 GPa)

Modulus of Rigidity

36542.2 MPa

CDA Physical Properties: Shear modulus 5300.0 ksi (36542.2 MPa)

Machinability Rating

100 %

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

Product Form:

Temper / Condition:

Showing 39 of 39 conditions

Scroll horizontally for all conditions & tempers

Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Bar	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 310.3 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 117.2 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Tensile Strength: 275.8 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — H02	1.5	275.8 MPa	117.2 MPa	20 %	—	—	—	VERIFIED
Bar	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 60 HRB (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — H02	1.5	—	—	—	—	—	60 HRB	VERIFIED
Bar	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 275.8 MPa (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — H02	3	275.8 MPa	—	20 %	—	—	—	VERIFIED
Bar	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 344.7 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Tensile Strength: 310.3 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — H02	<0.50	310.3 MPa	—	15 %	—	—	—	VERIFIED
Bar	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 65 HRB (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — H02	<0.50	—	—	—	—	—	65 HRB	VERIFIED
Bar	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 303.4 MPa (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — O60	<1	303.4 MPa	—	20 %	—	—	—	VERIFIED
Bar	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 275.8 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — O60	1.5	275.8 MPa	—	25 %	—	—	—	VERIFIED
Bar	Soft Anneal (O60) Source values and qualifiers Rockwell B Hardness: 22 HRB (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — O60	1.5	—	—	—	—	—	22 HRB	VERIFIED
Flat Products	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 386.1 MPa (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — H02	0.25	386.1 MPa	—	20 %	—	—	—	VERIFIED
Flat Products	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 62 HRB (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 227.5 MPa (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — H02	0.25	—	—	—	227.5 MPa	—	62 HRB	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 393 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 172.4 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 7 % (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — H02	<0.50	393 MPa	172.4 MPa	7 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 65 HRB (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Shear Strength: 220.6 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Fatigue Strength: 137.9 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H02	<0.50	—	—	—	220.6 MPa	137.9 MPa	65 HRB	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 344.7 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — H02	1.5	344.7 MPa	—	15 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 65 HRB (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — H02	1.5	—	—	—	—	—	65 HRB	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 310.3 MPa (TYPICAL)Section Size: 3.0; Section Size: 3.0 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 3.0; Section Size: 3.0 inCopper Development Association (CDA) — H02	3.0	310.3 MPa	—	20 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 55 HRB (TYPICAL)Section Size: 3.0; Section Size: 3.0 inCopper Development Association (CDA) — H02	3.0	—	—	—	—	—	55 HRB	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 275.8 MPa (TYPICAL)Section Size: 4.5; Section Size: 4.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 4.5; Section Size: 4.5 inCopper Development Association (CDA) — H02	4.5	275.8 MPa	—	20 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 25 HRB (TYPICAL)Section Size: 4.5; Section Size: 4.5 inCopper Development Association (CDA) — H02	4.5	—	—	—	—	—	25 HRB	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 379.2 MPa (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — H02	0.75	379.2 MPa	—	10 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 70 HRB (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — Shear Strength: 234.4 MPa (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — H02	0.75	—	—	—	234.4 MPa	—	70 HRB	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 399.9 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — H02	1	399.9 MPa	310.3 MPa	25 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 379.2 MPa (TYPICAL)Section Size: 2; Cold Work: 18%; Section Size: 2 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 2; Cold Work: 18%; Section Size: 2 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 32 % (TYPICAL)Section Size: 2; Cold Work: 18%; Section Size: 2 inCopper Development Association (CDA) — H02	2	379.2 MPa	303.4 MPa	32 %	—	—	—	VERIFIED
Rod	1/2 Hard (H02) · 20 °C Source values and qualifiers Tensile Strength: 468.8 MPa (TYPICAL)Section Size: 0.24; Cold Work: 25%; Section Size: 0.24 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 358.5 MPa (TYPICAL)Section Size: 0.24; Cold Work: 25%; Section Size: 0.24 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 18 % (TYPICAL)Section Size: 0.24; Cold Work: 25%; Section Size: 0.24 inCopper Development Association (CDA) — H02	0.24	468.8 MPa	358.5 MPa	18 %	—	—	—	VERIFIED
Rod	Annealed (O61) · 20 °C Source values and qualifiers Tensile Strength: 337.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 124.1 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 53 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — O61	1	337.8 MPa	124.1 MPa	53 %	—	—	—	VERIFIED
Rod	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 448.2 MPa (TYPICAL)Section Size: 0.625; Section Size: 0.625 inCopper Development Association (CDA) — Elongation: 6 % (TYPICAL)Section Size: 0.625; Section Size: 0.625 inCopper Development Association (CDA) — H04	0.625	448.2 MPa	—	6 %	—	—	—	VERIFIED
Rod	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 482.6 MPa (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — Elongation: 4 % (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — H04	0.375	482.6 MPa	—	4 %	—	—	—	VERIFIED
Rod	Hard (H04) Source values and qualifiers Rockwell B Hardness: 78 HRB (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — Shear Strength: 234.4 MPa (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — H04	0.375	—	—	—	234.4 MPa	—	78 HRB	VERIFIED
Rod	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 551.6 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — H04	0.25	551.6 MPa	—	—	—	—	—	VERIFIED
Rod	Hard (H04) Source values and qualifiers Rockwell B Hardness: 80 HRB (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 262 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — H04	0.25	—	—	—	262 MPa	—	80 HRB	VERIFIED
Rod	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 330.9 MPa (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — O60	<1	330.9 MPa	—	15 %	—	—	—	VERIFIED
Rod	Soft Anneal (O60) Source values and qualifiers Rockwell B Hardness: 28 HRB (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — Shear Strength: 206.8 MPa (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — O60	<1	—	—	—	206.8 MPa	—	28 HRB	VERIFIED
Rod	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 303.4 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — O60	1.5	303.4 MPa	—	20 %	—	—	—	VERIFIED
Rod	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 275.8 MPa (TYPICAL)Section Size: 2.5; Section Size: 2.5 inCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 2.5; Section Size: 2.5 inCopper Development Association (CDA) — O60	2.5	275.8 MPa	—	25 %	—	—	—	VERIFIED
Shapes	1/4 Hard (H01) · 20 °C Source values and qualifiers Tensile Strength: 386.1 MPa (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — H01	0.5	386.1 MPa	—	20 %	—	—	—	VERIFIED
Shapes	1/4 Hard (H01) Source values and qualifiers Rockwell B Hardness: 62 HRB (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 227.5 MPa (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — H01	0.5	—	—	—	227.5 MPa	—	62 HRB	VERIFIED
Shapes	1/4 Hard (H01) · 20 °C Source values and qualifiers Tensile Strength: 386.1 MPa (TYPICAL)Cold Work: 15%Copper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Cold Work: 15%; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Cold Work: 15%Copper Development Association (CDA) — H01	—	386.1 MPa	310.3 MPa	20 %	—	—	—	VERIFIED
Shapes	As Hot Extruded (M30) · 20 °C Source values and qualifiers Tensile Strength: 337.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 124.1 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — M30	0.5	337.8 MPa	124.1 MPa	50 %	—	—	—	VERIFIED
Shapes	As Hot Extruded (M30) Source values and qualifiers Rockwell F Hardness: 68 HRF (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 206.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — M30	0.5	—	—	—	206.8 MPa	—	68 HRF	VERIFIED
Shapes	As Hot Extruded (M30) · 20 °C Source values and qualifiers Tensile Strength: 337.8 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 124.1 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Copper Development Association (CDA) — M30	—	337.8 MPa	124.1 MPa	50 %	—	—	—	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

C36000 Free-Cutting Brass Processing & Fabrication

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

Source: Copper Development Association (CDA)

Machinability

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

Weldability & Joining

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

Heat Treatment & Working Ranges

Annealing temperature range: 426.7°C to 593.3°C (800°F - 1100°F). Hot working temperature range: 704.4°C to 787.8°C (1300°F - 1450°F).

Forming & Cold Working

Capacity for Being Cold Worked: Fair. 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

The cataloged machining note for C36000 Free-Cutting Brass states: Machinability rating: 100% relative to free-cutting brass (C36000 = 100%). A relevant hardness example is Rockwell B Hardness: 60 HRB (typical; 1/2 Hard (H02), H02, Bar, 1.5). Use that supplied condition for a trial of the difficult feature. Record tool changes, burr removal, unclamped dimensions and accepted parts per hour. Relative machinability ratings from different reference scales should not be compared as if they were one common test.

Weldability, brazing & joining

The available joining assessment states: Soldering: Excellent; Brazing: Good; Oxyacetylene Welding: Not Recommended; Gas Shielded Arc Welding: Not Recommended; Coated Metal Arc Welding: Not Recommended; Spot Weld: Not Recommended; Seam Weld: Not Recommended; Butt Weld: Fair The first cataloged strength example is Tensile Strength: 310.3 MPa (typical; 1/2 Hard (H02), H02, Bar, 1.5; test temperature 20 °C). Assess the final part after joining or thermal processing. Include distortion, cleanup and inspection in the quotation. A material designation or favorable process rating is a starting point for qualification, not evidence that an untested joint meets the drawing.

Corrosion & service environment

Review the working fluid, cleaning agents and dissimilar-metal contacts as separate exposures. The word copper, brass or bronze is too broad to establish compatibility. A process rating does not qualify a pressure boundary, and a thermal-property measurement does not establish a continuous service-temperature limit. The recorded thermal example is Thermal Conductivity: 115.96 W/(m·K) (typical; ; test temperature 20 °C). State the exposure and inspection access in the design record so that a change of installation or cleaning method triggers a review. The selected composition entries are Cu 60–63 wt%, Pb 2.5–3 wt%. Chemistry documents identity; it does not establish fluid compatibility.

Selection trade-offs & applications

Treat this as a machining candidate rather than a universal forming brass. Check any subsequent swage, bend or join before qualifying the turned blank, and obtain a composition declaration where the product has substance restrictions. The related candidate C26000 Cartridge Brass 70/30 is linked for comparison; its commonly compared relationship must be checked before substitution. Compare the complete route through machining, joining, finish and inspection. Keep the certificate, required test location and acceptance criteria with the first-article record. A later change of grade, condition or source should be assessed against that same requirement.

Technical references: Copper Development Association (CDA); Copper Development Association (CDA)

C36000 Free-Cutting Brass Equivalent & Comparable Grades

Comparable Grades & Cross-References: Carefully classified cross-reference relationships for C36000 Free-Cutting Brass. Comparable does not mean equivalent.

Scroll horizontally for relationship classifications & comparisons

Related Material	Family	Relationship Classification	Metallurgical Notes & Differences	Status
C26000 Cartridge Brass 70/30	Copper Alloys	Commonly Compared	C36000 Free-Cutting Brass contains ~3% lead for optimal 100% machinability rating and chip breaking in turning operations. C26000 Cartridge Brass contains no lead and provides superior cold drawing and stamping capability.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C46400 Naval Brass	Copper Alloys	Commonly Compared	C36000 is optimized for automated high-speed turning (100% machinability rating), whereas C46400 is optimized for marine corrosion resistance and strength (30% machinability rating).Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C14500 Tellurium Copper	Copper Alloys	Commonly Compared	C36000 provides 100% machinability rating with 28% IACS conductivity, whereas C14500 provides 85% machinability rating with 93% IACS conductivity.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C11000 ETP Copper	Copper Alloys	Commonly Compared	C36000 is a leaded brass optimized for precision machining (100% rating) with tensile strength 340-470 MPa, whereas C11000 is unalloyed copper providing 101% IACS conductivity but low machinability (20%).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 C36000 Property & Specification Profile

AUTHORITATIVE BODY

Copper Development Association authoritative technical reference profile for C36000 Free-Cutting Brass.

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

Copper Development Association Inc.CDA UNS Standard Designations Register (C36000)

AUTHORITATIVE BODY

Unified Numbering System (UNS) designation registration register confirming active C36000 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.