Find suppliers for this alloyC66850
Chemical Composition
(1) Cu value includes Ag. (2) Cu + Sum of Named Elements 99.5% min. (3) Ni value includes Co.
Min (%)60.00.500.504.0
Max (%)
Mechanical Properties*
Temper Code
Tensile Strength
Rockwell B scale
Shear Strength
Compressive Yield Strength
ForgingsAs Hot Forged - Air CooledM1069.6   Min
72.5   Typ
75.4   Max
15   Min
30   Max
130   Min
140   Max
38.1   Typ
1780   Min
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F1742
Melting Point - Solidus°F1590
Densitylb/cu in. at 68°F0.291
Specific Gravity8.048
Electrical Conductivity% IACS at 68°F5.7
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F16.7
Coefficient of Thermal Expansion 68-21210⁻⁶ per °F (68 – 212°F)7.73
Coefficient of Thermal Expansion 68-39210⁻⁶ per °F (68 – 392°F)10.96
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)12.05
Specific Heat CapacityBtu/ lb /°F at 68°F0.099
Modulus of Elasticity in Tensionksi13900
Modulus of Rigidityksi5200
Poisson's Ratio0.34
Fabrication Properties
Technique Suitability
Oxyacetylene WeldingFair
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingFair
Spot WeldFair
Seam WeldExcellent
Butt WeldPoor
Capacity for Being Cold WorkedFair
Capacity for Being Hot FormedGood
Forgeability Rating70
Machinability Rating65
Common Fabrication Processes
  • Die Forgings
Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief572
Typical uses
Product Category Product Reason Category Reason
PlumbingValve Bodies, mFaucets, Plumbing Components
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.