Copper Alloy (UNS C95200)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
     Heat Treatment


There are about 400 copper alloys with various compositions that provide unique characteristics to suit numerous applications. Aluminum bronze is an alloy consisting of about 6% of nickel and iron and 9 to 12% of aluminum. It has high wear resistance, good strength and high corrosion resistance.

The following datasheet will discuss about the UNS C95200 copper casting alloy.

Chemical Composition

The following table shows chemical composition of UNS C95200 copper alloy.

Element Content (%)
Copper, Cu 88
Aluminum, Al 9
Iron, Fe 3

Physical Properties

The physical properties of UNS C95200 copper alloy are tabulated below.

Properties Metric Imperial
Density 7.64 g/cm3 0.276 lb/in3
Melting point 1040 - 1045°C 1900 - 1913°F

Mechanical Properties

The mechanical properties of UNS C95200 copper alloy are outlined in the following table

Mechanical Properties Metric Imperial
Tensile strength (as cast) 550 MPa 79800 psi
Yield strength (as cast) 185 MPa 26800 psi
Poisson’s ratio 0.310 0.310
Elongation at break (in 50 mm) 35% 35%
Reduction of area (@150°C/302°F) 3% 3%
Modulus of elasticity 105 GPa 15200 ksi
Shear modulus 39 GPa 5660 ksi
Charpy impact (@18-38°C/0.400-100°F, keyhole) 27 J 19.9 ft-lb
Hardness, Brinell (3000 kg) 125 125
Hardness, Rockwell B 64 64
Machinability (UNS C36000 (free-cutting brass) = 100) 20 20

Thermal Properties

The thermal properties of UNS C95200 copper alloy are given in the following table.

Thermal Properties Metric Imperial
Thermal expansion co-efficient (@20-300°C/68-572°F) 16.2 µm/m°C 9 µin/in°F
Thermal conductivity (@20°C /68°F) 50.0 W/mK 347 BTU in/hr.ft2.°F

Other Designations

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Other designations that are equivalent to UNS C95200 copper alloy include:

  • ASME B16.24
  • ASME SB148
  • ASME SB271
  • ASME SB505
  • ASTM B148
  • ASTM B271
  • ASTM B30
  • ASTM B505
  • ASTM B763
  • QQ C390
  • SAE J461
  • SAE J462



The machinability rating of UNS C95200 copper alloy is 50.


UNS C95200 copper alloy can be welded using soldering, brazing, carbon arc welding, gas shielded arc welding and coated metal arc welding. Oxyacetylene welding is not preferred for this type of alloys.

Heat Treatment

UNS C95200 copper alloy is stress relieved at 316°C (600°F). The time taken for stress relieving is about 1 h/in. of section thickness. This alloy is unresponsive to heat treatment.


The following are the major applications of UNS C95200 copper alloy:

  • Acid-resisting pumps
  • Bearings
  • Gears
  • Valve seats
  • Guides
  • Plungers
  • Pump rods
  • Bushings


  1. Praveen Sharma Praveen Sharma Qatar says:

    What about the low temperature toughness of this grade (C95200). Can it be used for a Cryogenic (-196 deg C) valve seat?

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