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Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe P Ni(3)
(1) Cu value includes Ag.
(2) Cu + Sum of Named Elements 99.7% min.
(3) Ni value includes Co.
Min (%) 87.0 2.5 0.05 0.01 0.05
Max (%) 90.0 0.05 4.0 Rem 0.20 0.20 0.20
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)
YS-0.2% Offset
(ksi)
Elongation
(%)
* Measured at room temperature, 68°F (20°C).
Flat Products 1/2 Hard H02 80 Typ
72 Typ
10 Min
1/4 Hard H01 68 Typ
45 Typ
20 Min
Extra Hard H06 105 Typ
100 Typ
4 Min
Extra Spring H10 121 Typ
118 Typ
1 Min
Hard H04 92 Typ
85 Typ
6 Min
Nominal Grain Size 0.015 mm OS015 60 Typ
32 Typ
35 Min
Spring H08 115 Typ
110 Typ
2 Min
Physical Properties
Melting Point - Liquidus°F 1890
Melting Point - Solidus°F 1850
Densitylb/cu in. at 68°F 0.318
Specific Gravity 8.8
Electrical Conductivity% IACS at 68°F 25
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 63
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 10.2
Modulus of Elasticity in Tensionksi 17000
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Fair
Machinability Rating 30
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Maximum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief 300
Annealing 700 1350
Typical Uses

No information for this alloy

Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Strip ASTM B888/B88M COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS
Corrosion Properties

No Corrosion Properties Available.