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C70265 Wrought COPPER NICKELS Copper-Nickel Alloys true true https://api.copper.org/alloys.xhtml/C70265
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn P Ni(3) Si
(1) Cu + Sum of Named Elements 99.5% min.
(2) Cu value includes Ag.
(3) Ni value includes Co.
Min (%) 0.05 1.0 0.20
Max (%) Rem 0.05 0.8 0.30 0.01 3.0 0.7
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 Elongation
(%)
* Measured at room temperature, 68°F (20°C).
Strip Mill-hardened Temper, TM - 3/4 HM TM03 105 Min for Standard
 95 Typ
 2 Typ
Mill-hardened Temper, TM - 1/2 Hard TM02 90 Min for Standard
 85 Typ
 4 Typ
Mill-hardened Temper, TM - 1/2 Hard TM00 80 Min for Standard
 65 Typ
 10 Min
Mill-hardened Temper, TM - 1/2 Hard TM01 90 Min for Standard
 75 Typ
 6 Typ
Mill-hardened Temper, TM - Hard TM04 110 Min for Standard
 100 Typ
 1 Typ
Physical Properties
Melting Point - Liquidus°F 1945
Densitylb/cu in. at 68°F 0.32
Specific Gravity 8.85
Electrical Conductivity% IACS at 68°F 40
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 90
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 9
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 9
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 19500
Magnetic Permeability 1
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Good
Spot Weld Excellent
Seam Weld Excellent
Butt Weld Excellent
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Forgeability Rating 80
Common Fabrication Processes
  • Forming and Bending
  • Stamping
Thermal Properties

No thermal properties for this alloy

Typical uses
Product Category Product Reason Category Reason
Electrical Connectors
Leadframe Sockets
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Sheet & Strip ASTM B422/B422M COPPER-ALUMINUM-SILICON-COBALT ALLOY AND COPPER-NICKEL-ALUMINUM-SILICON ALLOY SHEET AND STRIP
Strip ASTM B888/B88M COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS
Corrosion Properties

No Corrosion Properties Available.