Reference guide

Continuous cast

Aluminum bronze, such as C95600, 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 standard sizes of rounds, tubes, and rectangles. Aluminum in conjunction with iron and nickel in acts as a strengthener in these alloys including C956. All of the aluminum bronzes can be heat treated, further increasing tensile strengths.


Product description: Nickel-aluminum bronze
Solids: 1/2" to 9" O.D.
Tubes: 1 1/8" to 9" 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

 *Consult mill for wall thickness

Typical uses

Electrical: Cable connectors, terminals
Industrial: Gears, valve stems, worms

Chemical composition

Cu% Ni%1 Al% Si%
Chemical composition provided by CDA

1Ni value includes Co.
Note: Cu + sum of named elements, 99.0% min. Single values, unless otherwise noted, represent maximums.


Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C95600 60 0.278

Mechanical properties

Mechanical properties provided by CDA
Tensile strength, typ Yield strength, at 0.5% extension typ Elongation Brinell hardness (3000 kg load) Remarks
ksi MPa ksi MPa % typical BHN  
75 517 34 234 18 140  

Physical properties

  US Customary Metric
Physical properties provided by CDA
Melting point - liquidus 1840 °F 1004 °C
Melting point - solidus 1800 °F 982 °C
Density 0.278 lb/in3 at 68 °F 7.7 gm/cm3 at 20 °C
Specific gravity 7.7 7.7
Electrical conductivity 8% IACS at 68 °F 0.046 MegaSiemens/cm at 20 °C
Thermal conductivity 22.3 Btu/sq ft/ft hr/°F at 68 °F 38.6 W/m at 20 °C
Coefficient of thermal expansion 68-572 9.2 · 10-6 per °F (68-572 °F) 15.9 · 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 15000 ksi 103422 MPa

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 Fair
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 Value* Time**
Stress relief 600  
Solution treatment   0

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