Shanghai Unique Alloy Co.Ltd 

Focus on Copper Alloy 

Casting Special Copper Alloy C99750 

 

 

Chemical Composition

  Element
Cu(1) Pb Zn Fe Ni Al Mn
(1) Cu + Sum of Named Elements 99.7% min.
Min (%) 55.0 0.50 17.0     0.25 17.0
Max (%) 61.0 2.5 23.0 1.0 5.0 3.0 23.0

 

Physical Properties
Melting Point - Liquidus°F 1550
Melting Point - Solidus°F 1505
Densitylb/cu in. at 68°F 0.29
Specific Gravity 8.03
Electrical Conductivity% IACS at 68°F 2
Coefficient of Thermal Expansion 68-39210-6 per °F (68 – 392°F) 13.5
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 17000
Casting Characteristics
Casting Attribute Level
Casting Yield High
Drossing Low
Fluidity High
Gassing Low
Shrinkage in Solidification Medium
Fabrication Properties
Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Machinability Rating 80