Find suppliers for this alloyC70240
Chemical Composition
Element
Cu(1,2)PbZnFeNi(3)AgMnSi
(1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag. (3) Ni value includes Co.
Min (%)0.301.00.010.010.40
Max (%)Rem0.050.80.104.00.100.200.8
Mechanical Properties*
Form
Temper
Temper Code
Tensile Strength
(ksi)
YS-0.2% Offset
Elongation
(%)
Vickers Hardness, 3000 gm
Flat Products1/2 HardH0290   Min
99   Typ
107   Max
75   Min
84   Typ
93   Max
5   Min
200   Min
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Solidus°F1940
Densitylb/cu in. at 68°F0.32
Specific Gravity8.85
Electrical Conductivity% IACS at 68°F53
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F121
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)9.41
Modulus of Elasticity in Tensionksi18600
Poisson's Ratio0.33
Fabrication Properties
Technique Suitability
SolderingExcellent
BrazingNot Recommended
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingNot Recommended
Coated Metal Arc WeldingNot Recommended
Spot WeldNot Recommended
Seam WeldNot Recommended
Butt WeldNot Recommended
Capacity for Being Cold WorkedGood
Capacity for Being Hot FormedGood
Common Fabrication Processes
  • Forming and Bending
  • Stamping
Thermal Characteristics

No thermal characteristics for this alloy

Typical uses
Product Category Product Reason Category Reason
ElectricalLead Frames
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.