Find suppliers for this alloyC70275
Chemical Composition
(1) Cu value includes Ag. (2) Cu + Sum of Named Elements 99.5% min.
Min (%)0.300.300.500.0020.10
Max (%)Rem0.
Mechanical Properties*
Temper Code
Tensile Strength
YS-0.2% Offset
Vickers Hardness, 500 gm
Flat Products1/2 Hard and Stress RelievedHR0258   Min
73   Max
54   Min
69   Max
9   Min
130   Min
150   Max
Cold-worked (drawn), Stress-relieved Tempers, HRHR76   Min
91   Max
73   Min
87   Max
3   Min
150   Min
180   Max
Hard and Stress RelievedHR0469   Min
83   Max
65   Min
80   Max
7   Min
140   Min
170   Max
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F1985
Melting Point - Solidus°F1920
Densitylb/cu in. at 68°F0.323
Specific Gravity8.94
Electrical Conductivity% IACS at 68°F33
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F84.1
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)9.5
Specific Heat CapacityBtu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tensionksi18900
Fabrication Properties
Technique Suitability
Oxyacetylene WeldingFair
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingFair
Spot WeldGood
Seam WeldFair
Capacity for Being Cold WorkedGood
Capacity for Being Hot FormedGood
Forgeability Rating70
Machinability Rating20
Fabrication Process Properties

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Hot Treatment15571755
Typical uses
Product Category Product Reason Category Reason
ElectricalConnectors, Terminals, Contact Springs, Fuse Clips, Busbars
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.