Aluminum Bronze - Copper Casting Alloy UNS C95500

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Welding
     Heat Treatment

Introduction

Aluminum bronze - copper casting alloy UNS C95500 is an alloy of copper-aluminum-iron and copper-aluminum-iron-nickel. UNS C95500 copper alloy is anti-corrosive, resistant to biofouling and thermally stable.

The following datasheet provides the chemical composition and properties of UNS C95500 alloy.

Chemical Composition

The chemical composition of UNS C95500 copper alloy is given in the following table.

Element Content (%)
Al, Aluminium/Aluminum 10.0 - 11.5
Cu, Copper 78.0
Fe, Iron 3.0 - 5.0
Mn, Manganese  3.50
Ni, Nickel 3.0 - 5.50
Other  0.50

Physical Properties

The following table details the physical properties of UNS C95500 alloy.

Properties Metric Imperial
Density 7.53 g/cm3 0.272 lb/in³

Mechanical Properties

The mechanical properties of UNS C95500 copper alloy are shown in the following table.

Properties Metric Imperial
Elastic modulus 117 GPa 16969 ksi
Poisson's ratio 0.34 0.34
Hardness, Brinell 192 192
Hardness, Rockwell B 87 87
Elongation at break 5.00% 5.00%
Machinability 50 50
Izod impact 18.0 J 13.3 ft.lb
Compressive strength 895 MPa 130000 psi
Fatigue strength 215 MPa 31200 psi
Shear modulus 42.0 GPa 6090 ksi
Shear strength 44.0 MPa 6380 psi

Thermal Properties

The following table outlines the thermal properties of UNS C95500 alloy.

Properties Metric Imperial
Thermal expansion co-efficient (20.0 - 300°C/68.0 - 572°F) 16.2 µm/m°C 9.00 µin/in°F
Thermal conductivity (20°C/68°F) 42.0 W/mK 291 BTU in/hr.ft°F

Other Designations

Equivalent designations to UNS C95500 copper alloy include:

  • ASTM B148
  • ASTM B271
  • ASTM B30
  • ASTM B505
  • ASTM B763
  • ASTM B806
  • QQ C390
  • SAE J461
  • SAE J462

Fabrication and Heat Treatment

Machinability

UNS C95500 alloy has a machinability rating of 50.

Welding

The preferred welding techniques for UNS C95500 copper alloy are soldering, gas shielded arc welding, brazing and coated metal arc welding. Oxyacetylene welding and carbon arc welding are not recommended for this alloy.

Heat Treatment

The stress relieving temperature of UNS C95500 alloy is 316°C (600°F). UNS C95500 copper alloy does not respond to heat treatment. The solution heat treatment of UNS C95500 alloy is between 860 and 890°C (1585 and 1635°F).

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