Reference guide

✔ Standard-stocked product

Continuous cast • GreenAlloys™

Aluminum bronze is the highest strength standard copper-based alloy. Wieland Concast produces C95400, C95500, AMS 4880-C95510, and C95900 aluminum bronze alloys as Standard-stocked products in common sizes of rounds, tubes, and rectangles. Aluminum in conjunction with iron and nickel acts as a strengthener in these alloys including C954. All of the aluminum bronzes can be heat treated, further increasing tensile strengths. More»


Product description: Aluminum bronze
Solids: 1/2" to 10" O.D.
Tubes: 1 1/8" to 12" O.D.*
Rectangles: Up to 15"
Standard lengths: 144"
Shape/Form: Semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar
Compliance: C95400 is compliant with key legislation including (1) Federal Safe Drinking Water Act - SDWA, (2) S. 3874 Federal Reduction of Lead in Drinking Water Act, (3) California AB1953, and (4) Vermont Act 193

 *Consult mill for wall thickness

Typical uses

Automotive: Weld guns
Fasteners: Large hold-down screws, nuts
Industrial: Bearing segments for the steel industry, bearings, bushings, gears, heavily loaded worm gears, high-strength clamps, landing gear parts, machine parts, pawl, pickling hooks, pressure blocks for the steel industry, pump parts, spur gears, valve bodies, valve guides, valve seats, valves, worm gears
Marine: Covers for marine hardware, ship building
Ordnance: Government fittings

Note: Also available in heat-treated condition.

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C95400 B505
  QQ-C-390, G5;
QQ-B-671, Class 3
MIL-B-16033, Class 3 Aluminum bronze 9C

Chemical composition

Cu% Fe% Ni%1 Al% Mn%
Chemical composition according to ASTM B505/B505M-23

1Ni value includes Co.
Note: Cu + sum of named elements, 99.5% min. Unless otherwise noted, single values represent maximums.


Copper alloy UNS No. Machinability rating Density (lb/cu in at 68 °F)
C95400 60 0.269

Mechanical properties

Mechanical properties according to ASTM B505/B505M-23
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, in 2 in. or 50 mm min Brinell hardness (3000 kg load) Remarks
ksi MPa ksi MPa % typical BHN  
85 586 32 221 12 170  

Physical properties

  US Customary Metric
Physical properties provided by CDA

*As cast, field strength 16 kA/m **TQ 50 temper, field strength 16 kA/m
Melting point - liquidus 1900 °F 1038 °C
Melting point - solidus 1880 °F 1027 °C
Density 0.269 lb/in3 at 68 °F 7.45 gm/cm3 at 20 °C
Specific gravity 7.45 7.45
Electrical conductivity 13% IACS 0.075 MegaSiemens/cm at 20 °C
Thermal conductivity 33.9 Btu/sq ft/ft hr/°F at 68 °F 58.7 W/m at 20 °C
Coefficient of thermal expansion 68-572 9 · 10-6 per °F (68-572 °F) 15.5 · 10-6 per °C (20-300 °C)
Specific heat capacity 0.1 Btu/lb/°F at 68 °F 419 J/kg at 20 °C
Modulus of elasticity in tension 15500 ksi 107000 MPa
Magnetic Permeability* 1.27 1.27
Magnetic Permeability** 1.2 1.2

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene welding Not recommended
Gas shielded arc welding Good
Coated metal arc welding Good
Machinability rating 60

Thermal properties

Thermal properties provided by CDA
Temperature is measured in fahrenheit.   **For stress relief, Solution treatment and annealing - time is measured in hours/inch of thickness. For precipitation heat treatment - time is measured in hours.
Treatment Min* Max* Value* Time** Medium
Stress relief     600    
Solution treatment 1600 1675   1 Water
Annealing 1150 1225   1  

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