Reference guide

Continuous cast

Aluminum bronze, such as C95800, is the highest strength standard copper based alloy. 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 C958. 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

Fasteners: nuts
Industrial: bushings, gears, machinery, pickling equipment, propeller blades, propeller hub, shafts, valve bodies, wear plates, worm wheels, worms
Marine: covers for marine hardware, marine hardware, ship building, valves in contact with sea water
Plumbing: elbows

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C95800 B505
    QQ-C-390, G8   Apha Nickel-Aluminum bronze

Chemical composition

Cu% Pb% Fe%1 Ni%1,2 Al% Mn% Si%
Chemical composition according to ASTM B505/B505M-23

1Fe content shall not exceed Ni content.   2Ni value includes Co.
Unless otherwise noted, single values represent maximums.


Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C95800 20 0.276

Mechanical properties

Mechanical properties according to ASTM B505/B505M-23

Note: C95800 provided as cast or temper annealed.
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 35 241 18 159  

Physical properties

  US Customary Metric
Physical properties provided by CDA

*Field strength 16 kA/m
Melting point - liquidus 1940 °F 1060 °C
Melting point - solidus 1910 °F 1043 °C
Density 0.276 lb/in3 at 68 °F 7.64 gm/cm3 at 20 °C
Specific gravity 7.64 7.64
Electrical conductivity 7% IACS at 68 °F 0.041 MegaSiemens/cm at 20 °C
Thermal conductivity 20.8 Btu/sq ft/ft hr/°F at 68 °F 36 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 0.105 Btu/lb/°F at 68 °F 440 J/kg at 20 °C
Modulus of elasticity in tension 16500 ksi 114000 MPa
Magnetic Permeability* 1.05 1.05
Poisson's Ratio 0.32 0.32

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Good
Brazing Fair
Oxyacetylene welding Not recommended
Gas shielded arc welding Good
Coated metal arc welding Good
Machinability rating 20

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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