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C66850 Copper Zinc Alloy Wrought BRONZES Other Copper-Zinc Alloys true true https://api.copper.org/alloys.xhtml/C66850
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe P Ni(3) Al Mn
(1) Cu value includes Ag.
(2) Cu + Sum of Named Elements 99.5% min.
(3) Ni value includes Co.
Min (%) 60.0 0.50 0.50 4.0
Max (%) 64.0 0.09 0.6 Rem 1.5 0.05 0.50 1.5 8.0
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 Elongation
(%)		 Rockwell B scale Shear Strength
(ksi)		 Compressive Yield Strength
(ksi)
* Measured at room temperature, 68°F (20°C).
Forgings As Hot Forged - Air Cooled M10 69.6 Min
72.5 Typ
75.4 Max
 15 Min
30 Max		 130 Min
140 Max		 38.1 Typ
 1780 Min
Physical Properties
Melting Point - Liquidus°F 1742
Melting Point - Solidus°F 1590
Densitylb/cu in. at 68°F 0.291
Specific Gravity 8.048
Electrical Conductivity% IACS at 68°F 5.7
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 16.7
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 7.73
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 10.96
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 12.05
Specific Heat CapacityBtu/ lb /°F at 68°F 0.099
Modulus of Elasticity in Tensionksi 13900
Modulus of Rigidityksi 5200
Poisson's Ratio 0.34
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Spot Weld Fair
Seam Weld Excellent
Butt Weld Poor
Capacity for Being Cold Worked Fair
Capacity for Being Hot Formed Good
Forgeability Rating 70
Machinability Rating 65
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief 572
Annealing 1328
Typical Uses

No information for this alloy

Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.