Copper Casting Alloy (UNS C90710)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Other Designations


Copper casting alloys are produced using the casting process wherein a liquid material is poured into a mold containing a hollow cavity of a desired shape. Then the liquid is allowed to solidify. The solidified part is later removed and this is known as a casting. The casting process is considered by many to be more versatile as it has fewer limitations on shape.

The following datasheet discusses the chemical composition and properties of UNS C90710 copper casting alloy.

Chemical Composition

The chemical composition of copper UNS C90710 is given in the following table.

Element Content (%)
Tin, Sn 10-12
Lead, Pb 0.25
Antimony, Sb 0.20
Iron, Fe 0.10
Nickel, Ni 0.10
Phosphorous, P 0.05-1.2
Sulfur, S 0.05
Zinc, Zn 0.05
Aluminum, Al 0.005
Silicon, Si 0.005
Copper, Cu Balance

Physical Properties

The following table discusses the physical properties of copper UNS C90710.

Properties Metric Imperial
Density 8.8 g/cm3 0.307 lb/in3

Mechanical Properties

The mechanical properties of UNS C90710 copper continuous cast alloy are tabulated below.

Properties Metric Imperial
Tensile strength 360 MPa 52 ksi
Yield strength 170 MPa 25 ksi
Elongation 6% 6%
Hardness HB 100 100
Machinability 30 30

Other Designations

Other designations that are equivalent to copper UNS C90710 include:

  • SAE 65
  • AS 90710
  • BS 1400 PB1
  • BS EN CC481K.


Copper UNS C90710 finds application in:

  • Gears
  • Shafts
  • Bearings
  • Worm wheels
  • Heavy load bushes.

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