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Chemical Composition
Elements
Cu(1) Pb Sn Zn Fe P Ni
(1) Cu + Sum of Named Elements 99.7% min.
Min (%) 88.0 1.5 0.05 0.01 0.05
Max (%) 91.0 0.05 3.0 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 76 Typ
68 Typ
15 Typ
1/4 Hard H01 65 Typ
50 Typ
24 Typ
Extra Hard H06 98 Typ
94 Typ
6 Typ
Extra Spring H10 110 Typ
106 Typ
2 Typ
Hard H04 88 Typ
83 Typ
8 Typ
Nominal Grain Size 0.015 mm OS015 58 Typ
32 Typ
42 Typ
Spring H08 104 Typ
100 Typ
3 Typ
Physical Properties
Melting Point - Liquidus°F 1900
Melting Point - Solidus°F 1850
Densitylb/cu in. at 68°F 0.318
Specific Gravity 8.8
Electrical Conductivity% IACS at 68°F 30
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 75
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 10.2
Modulus of Elasticity in Tensionksi 16000
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*
* Temperature is measured in Fahrenheit.
Annealing 700 1350
Typical uses
Product Category Product Reason Category Reason
Automotive Terminals, automotive Conductivity (Electrical) Electrical Conductivity
Terminals, automotive Mechanical Properties Ductility
Terminals, automotive Mechanical Properties Strength
Electrical Connectors, electronic Conductivity (Electrical) Electrical Conductivity
Connectors, electronic Corrosion Resistance Stress Corrosion Crack Resistant
Connectors, electronic Mechanical Properties Strength, Moderate
Connectors, electronic Stress Relaxation Stress Relaxation Resistance
Contact springs Conductivity (Electrical) Electrical Conductivity
Contact springs Corrosion Resistance Corrosion Resistance
Contact springs Mechanical Properties Moderate to High Strength
Contact springs Solderability Solderability
Lead Frames Conductivity (Electrical) Electrical Conductivity
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Bar ASTM B591 COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR
Strip ASTM B591 COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR
ASTM B888/B88M COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS
Corrosion Properties

No Corrosion Properties Available.