Find suppliers for this alloyC40950
Chemical Composition
(1) Cu + Sum of Named Elements 99.7% min. (2) Ni value includes Co.
Min (%)
Max (%)
Mechanical Properties*
Temper Code
Tensile Strength
YS-0.2% Offset
Vickers Hardness, 3000 gm
Section Size
Strip1/2 HardH0267   Min
73   Typ
80   Max
64   Min
70   Typ
77   Max
8   Typ
160   Typ
160   Typ
Extra HardH0678   Min
84   Typ
91   Max
75   Min
81   Typ
90   Max
3   Typ
180   Typ
HardH0473   Min
78   Typ
86   Max
70   Min
75   Typ
83   Max
5   Typ
170   Typ
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F1940
Melting Point - Solidus°F1904
Densitylb/cu in. at 68°F0.32
Specific Gravity8.8
Electrical Resistivity28
Electrical Conductivity% IACS at 68°F37
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F98
Coefficient of Thermal Expansion 68-21210⁻⁶ per °F (68 – 212°F)10
Coefficient of Thermal Expansion 68-39210⁻⁶ per °F (68 – 392°F)10
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)10
Modulus of Elasticity in Tensionksi17400
Modulus of Rigidityksi6500
Fabrication Properties
Technique Suitability
Oxyacetylene WeldingFair
Gas Shielded Arc WeldingGood
Coated Metal Arc WeldingFair
Spot WeldFair
Seam WeldFair
Butt WeldGood
Capacity for Being Cold WorkedExcellent
Capacity for Being Hot FormedExcellent
Forgeability Rating60
Machinability Rating30
Fabrication Process Properties

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief570
Hot Working Temp1560
Typical uses
Product Category Product Reason Category Reason
AutomotiveConnectors, automotiveForming CharacteristicsCold Workability
Connectors, automotiveStress RelaxationStress Relaxation Resistance
Electric & Electronic parts
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.