Find suppliers for this alloyC28340
Chemical Composition
(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 (%)
Max (%)
Mechanical Properties*
Temper Code
Tensile Strength
YS-0.5% Ext
Rockwell B scale
Vickers Hardness, 500 gm
Rod & BarAs Hot Forged - Air CooledM1049   Typ
28   Typ
65   Typ
115   Typ
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F1680
Melting Point - Solidus°F1650
Densitylb/cu in. at 68°F0.31
Electrical Conductivity% IACS at 68°F27
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)11.4
Specific Heat CapacityBtu/ lb /°F at 68°F0.9
Modulus of Elasticity in Tensionksi14504
Fabrication Properties
Technique Suitability
Oxyacetylene WeldingGood
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingNot Recommended
Spot WeldGood
Seam WeldNot Recommended
Capacity for Being Cold WorkedExcellent
Capacity for Being Hot FormedExcellent
Forgeability Rating90
Machinability Rating85
Fabrication Process Properties

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief437
Typical uses
Product Category Product Reason Category Reason
PlumbingPotable water valve bodies, faucets, plumbing components
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.