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C28340 Wrought BRASSES Copper-Zinc Alloys (Yellow Brasses) true false https://api.copper.org/alloys.xhtml/C28340
Chemical Composition
Elements
Cu(1) Pb Sn Zn(2) Fe Ni As(3) Bi Cd Cr Mn Sb Si
(1) Cu + Sum of Named Elements 99.5% min.
(2) For optimum DZR properties , Zn should not exceed 38%.
(3) P may be substituted for As.
Min (%) 61.0 .17 .30 .07 .65
Max (%) 62.0 .25 .40 Rem .12 .20 .17 .75 .04 .02 .05 .05 .05
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Rockwell B scale Vickers Hardness, 500 gm
* Measured at room temperature, 68°F (20°C).
Rod & Bar As Hot Forged - Air Cooled M10 49 Typ
 28 Typ
 65 Typ
 115 Typ
Physical Properties
Melting Point - Liquidus°F 1680
Melting Point - Solidus°F 1650
Densitylb/cu in. at 68°F 0.31
Electrical Conductivity% IACS at 68°F 27
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 11.4
Specific Heat CapacityBtu/ lb /°F at 68°F 0.9
Modulus of Elasticity in Tensionksi 14504
Fabrication Properties
Technique Suitability
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
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Forgeability Rating 90
Machinability Rating 85
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief 437
Annealing 896
Typical Uses

No information for this alloy

Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.