VERIFIED(Source-Verified)

C28000 Muntz Metal 60/40

Primary Designation:UNS C28000

Aliases:

Muntz Metal60-40 BrassC28000

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 66 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

8.387 g/cm³TYPICAL · at 20 °C

Electrical Conductivity

28 % IACSTYPICAL · at 20 °C

Thermal Conductivity

122.88 W/(m·K)TYPICAL · at 20 °C

Specific Heat Capacity

376.8 J/(kg·K)TYPICAL · at 20 °C

Melting Range (Solidus / Liquidus)

898.9 – 904.4 °C1650.0 – 1660.0 °F

Solidus: 898.9°C | Liquidus: 904.4°C

Composition Excerpt

Cu 59–63 wt%Copper (range)

Standard Elemental Basis: RANGE

Engineering Summary

UNS C28000 Muntz Metal (59.0-63.0% Cu, Zn Remainder) is a two-phase duplex alpha-beta brass renowned for outstanding hot plasticity and hot-forging workability. Primarily specified for condenser tube sheets, valve stems, architectural trim, and hot-stamped fittings.

C28000 Muntz Metal 60/40 Documented Applications

›Architectural Panels: Forming Characteristics
›Architecture: Architectural Panels
›Bolts: Forming Characteristics
›Bolts: Machining Characteristics
›Bolts: Mechanical Properties
›Builders Hardware: Decorative Hardware
›Condenser Plates: Corrosion Resistance
›Condenser Plates: Forming Characteristics
›Condenser Plates: Mechanical Properties
›Condenser Tube: Conductivity (Thermal)
›Condenser Tube: Corrosion Resistance
›Decoration: Appearance

Recognized Aliases

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

Muntz Metal60-40 BrassC28000

C28000 Muntz Metal 60/40 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	C28000	Unified Numbering System	Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C28000)
CDA	Alloy 280	Copper Development Association Alloy Number	CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C28000)

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

4 Listed

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Recognized Name / Alias	Classification	Technical Usage & Context
Muntz Metal 60/40	Standard Commercial Name	CDA Standard Commercial Name
Muntz Metal	Commercial Alias	Colloquial or commercial industry synonym
60-40 Brass	Commercial Alias	Colloquial or commercial industry synonym
C28000	Commercial Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

7 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
ASME	ASME SB111	COPPER AND COPPER ALLOY SEAMLESS CONDENSER TUBES & FERRULE STOCK	Specification Reference
ASTM	ASTM B111/B111M	COPPER AND COPPER ALLOY SEAMLESS CONDENSER TUBES AND FERRULE STOCK	Specification Reference
ASME	ASME SB135	SEAMLESS BRASS TUBE	Specification Reference
ASTM	ASTM B135/B135M	Seamless Brass Tube	Specification Reference
ASTM	ASTM B135	Tube, Seamless	Specification Reference
FEDERAL	FEDERAL WW-T-791	TUBING: BRASS, SEAMLESS	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.

C28000 Muntz Metal 60/40 Chemical Composition

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

Scroll horizontally for full elemental limits

Element	Symbol	Atomic No.	Semantic Basis	Specified Value	Unit	Metallurgical Notes & Qualification	Data Status
Copper	Cu	29	RANGE	59.00 – 63.00	wt%	CDA chemical composition specification limits for C28000: 59.0 - 63.0 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Lead	Pb	82	MAXIMUM	≤ 0.09	wt%	CDA chemical composition specification limits for C28000: max 0.09 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	≤ 0.07	wt%	CDA chemical composition specification limits for C28000: max 0.07 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:

C28000 Muntz Metal 60/40 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	8.387 g/cm³	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Density 0.303 lb/cu in. at 68°F (8.387 g/cm³ at 20°C)	0.303 lb/cu in. at 68°F	Copper Development Association Inc.	VERIFIED

C28000 Muntz Metal 60/40 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	904.4 °C	TYPICAL	CDA Physical Properties: Liquidus temperature 1660.0 °F (904.4 °C)	1660.0 °F	Copper Development Association Inc.	VERIFIED
Solidus Temperature	898.9 °C	TYPICAL	CDA Physical Properties: Solidus temperature 1650.0 °F (898.9 °C)	1650.0 °F	Copper Development Association Inc.	VERIFIED
Thermal Conductivity	122.88 W/(m·K)	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 71.0 Btu/(ft·hr·°F) (122.88 W/(m·K) at 20°C)	71.0 Btu/ sq ft/ ft hr/ °F at 68°F	Copper Development Association Inc.	VERIFIED
Coefficient of Thermal Expansion (CTE)	20.88 µm/(m·K)	TYPICAL	CDA Physical Properties: CTE 11.6 µin/(in·°F) (20.88 µm/(m·K)) over range 68-57210°F	11.6 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	621.1 – 787.8 °C	RANGE	CDA Thermal Treatments: Hot working range 1150 - 1450°F (621.1 - 787.8°C)	1150 – 1450 °F	Copper Development Association Inc.	VERIFIED

C28000 Muntz Metal 60/40 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

C28000 Muntz Metal 60/40 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)

103.4 GPa

CDA Physical Properties: Elastic modulus in tension 15000.0 ksi (103.4 GPa)

Modulus of Rigidity

38610.6 MPa

CDA Physical Properties: Shear modulus 5600.0 ksi (38610.6 MPa)

Machinability Rating

40 %

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

Forgeability Rating

90 —

CDA Fabrication Properties: Relative forgeability rating.

Product Form:

Temper / Condition:

Showing 20 of 20 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: 482.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 344.7 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H02	0.04	482.6 MPa	344.7 MPa	10 %	—	—	—	VERIFIED
Flat Products	1/2 Hard (H02) Source values and qualifiers Rockwell B Hardness: 75 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 67 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) — H02	0.04	—	—	—	303.4 MPa	—	75 HRB67 HR30T	VERIFIED
Flat Products	1/8 Hard (H00) · 20 °C Source values and qualifiers Tensile Strength: 413.7 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 241.3 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H00	0.04	413.7 MPa	241.3 MPa	30 %	—	—	—	VERIFIED
Flat Products	1/8 Hard (H00) 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: 289.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — H00	0.04	—	—	—	289.6 MPa	—	55 HRB54 HR30T	VERIFIED
Flat Products	As Hot Rolled (M20) · 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): 144.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — M20	0.04	372.3 MPa	144.8 MPa	45 %	—	—	—	VERIFIED
Flat Products	As Hot Rolled (M20) Source values and qualifiers Rockwell F Hardness: 85 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 49 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) — M20	0.04	—	—	—	275.8 MPa	—	85 HRF49 HR30T	VERIFIED
Flat Products	Soft Anneal (O60) · 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): 144.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — O60	0.04	372.3 MPa	144.8 MPa	45 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) Source values and qualifiers Rockwell F Hardness: 80 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 46 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) — O60	0.04	—	—	—	275.8 MPa	—	80 HRF46 HR30T	VERIFIED
Flat Products & Rod	Annealed (O61) · 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): 144.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — O61	0.04	372.3 MPa	144.8 MPa	45 %	—	—	—	VERIFIED
Flat Products & Rod	Annealed (O61) · 20 °C Source values and qualifiers Tensile Strength: 372.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 144.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — O61	1	372.3 MPa	144.8 MPa	50 %	—	—	—	VERIFIED
Rod	1/4 Hard (H01) · 20 °C Source values and qualifiers Tensile Strength: 496.4 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 344.7 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — H01	1	496.4 MPa	344.7 MPa	25 %	—	—	—	VERIFIED
Rod	1/4 Hard (H01) Source values and qualifiers Rockwell B Hardness: 78 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — H01	1	—	—	—	—	—	78 HRB	VERIFIED
Rod	As Hot Extruded (M30) · 20 °C Source values and qualifiers Tensile Strength: 358.5 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 137.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 52 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — M30	1	358.5 MPa	137.9 MPa	52 %	—	—	—	VERIFIED
Rod	As Hot Extruded (M30) Source values and qualifiers Rockwell F Hardness: 78 HRF (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 268.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — M30	1	—	—	—	268.9 MPa	—	78 HRF	VERIFIED
Rod	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 372.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 144.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — O60	1	372.3 MPa	144.8 MPa	50 %	—	—	—	VERIFIED
Rod	Soft Anneal (O60) Source values and qualifiers Rockwell F Hardness: 80 HRF (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 275.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — O60	1	—	—	—	275.8 MPa	—	80 HRF	VERIFIED
Tube	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 510.2 MPa (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — Yield Strength (0.5% Ext): 379.2 MPa (TYPICAL)Cold Work: 30%; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — H04	—	510.2 MPa	379.2 MPa	10 %	—	—	—	VERIFIED
Tube	Hard (H04) Source values and qualifiers Rockwell B Hardness: 80 HRB (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — H04	—	—	—	—	—	—	80 HRB	VERIFIED
Tube	Light Anneal (O50) · 20 °C Source values and qualifiers Tensile Strength: 386.1 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 158.6 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Copper Development Association (CDA) — O50	—	386.1 MPa	158.6 MPa	50 %	—	—	—	VERIFIED
Tube	Light Anneal (O50) Source values and qualifiers Rockwell F Hardness: 82 HRF (TYPICAL)Copper Development Association (CDA) — Rockwell 30T Hardness: 47 HR30T (TYPICAL)Copper Development Association (CDA) — O50	—	—	—	—	—	—	82 HRF47 HR30T	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

C28000 Muntz Metal 60/40 Processing & Fabrication

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

Source: Copper Development Association (CDA)

Machinability

Machinability rating: 40% relative to free-cutting brass (C36000 = 100%). Forgeability rating: 90.

Weldability & Joining

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

Heat Treatment & Working Ranges

Annealing temperature range: 426.7°C to 593.3°C (800°F - 1100°F). Hot working temperature range: 621.1°C to 787.8°C (1150°F - 1450°F).

Forming & Cold Working

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

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 C28000 Muntz Metal 60/40 states: Machinability rating: 40% relative to free-cutting brass (C36000 = 100%). Forgeability rating: 90. A relevant hardness example is Rockwell B Hardness: 75 HRB (typical; 1/2 Hard (H02), H02, Flat Products, 0.04). 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: Excellent; Oxyacetylene Welding: Good; Gas Shielded Arc Welding: Fair; Coated Metal Arc Welding: Not Recommended; Spot Weld: Good; Seam Weld: Not Recommended; Butt Weld: Good The first cataloged strength example is Tensile Strength: 482.6 MPa (typical; 1/2 Hard (H02), H02, Flat Products, 0.04; 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: 122.88 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 59–63 wt%, Pb maximum 0.09 wt%. Chemistry documents identity; it does not establish fluid compatibility.

Selection trade-offs & applications

Use UNS C28000, COMMERCIAL Muntz Metal 60/40, CDA Alloy 280 to identify the candidate, then specify the product form and delivered condition separately. The catalog lists Architectural Panels: Forming Characteristics as an application example. The related candidate C26800 Yellow Brass 66% 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)

C28000 Muntz Metal 60/40 Equivalent & Comparable Grades

Comparable Grades & Cross-References: Carefully classified cross-reference relationships for C28000 Muntz Metal 60/40. Comparable does not mean equivalent.

Scroll horizontally for relationship classifications & comparisons

Related Material	Family	Relationship Classification	Metallurgical Notes & Differences	Status
C26800 Yellow Brass 66%	Copper Alloys	Commonly Compared	C28000 Muntz Metal 60/40 is a two-phase duplex brass engineered for hot forging and hot rolling, whereas C26800 is a single-phase alpha brass engineered for cold stamping.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C26000 Cartridge Brass 70/30	Copper Alloys	Commonly Compared	C28000 provides high hot-forging plasticity and higher hardness for architectural plates and tube sheets, whereas C26000 provides maximum cold drawing capability.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C46400 Naval Brass	Copper Alloys	Nearest Alternative	C28000 is binary 60Cu-40Zn brass; C46400 Naval Brass adds 0.5-1.0% tin to the 60/40 composition to inhibit dezincification in seawater.Design parameters (weldability, hardenability, fatigue limit) must be re-evaluated for the specific application.	VERIFIED

Yellow Brass Alloy Family

Copper alloys sharing common alloying formulations and metallurgical classifications under the Yellow Brass branch.

4 Adjacent Grades

C26800

C26800 Yellow Brass 66%

View Grade →

C27000

C27000 Yellow Brass 65%

View Grade →

C27200

C27200 Yellow Brass 63%

View Grade →

C28000Current Grade

C28000 Muntz Metal 60/40

Sources

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

Copper Development Association Inc.CDA Alloy C28000 Property & Specification Profile

AUTHORITATIVE BODY

Copper Development Association authoritative technical reference profile for C28000 Muntz Metal 60/40.

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

Copper Development Association Inc.CDA UNS Standard Designations Register (C28000)

AUTHORITATIVE BODY

Unified Numbering System (UNS) designation registration register confirming active C28000 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.