Reference guide

✔ Standard-stocked product

Continuous cast • GreenAlloys™

Aluminum bronze 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 acts as a strengthener in these alloys including C955. All of the aluminum bronzes can be heat treated, further increasing tensile strengths. MORE »


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
Compliance: C95500 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

Builders hardware: window hardware
Consumer: musical instruments, piano keys
Electrical: electrical hardware
Fasteners: stuffing box nuts
Industrial: aircraft components, bearings, bushings, gears, glands, glass molds, handgun recoil mechanisms, hot mill guides, landing gear parts, machine parts, pickling equipment, piston guides, pump fluid ends, sewage treatment applications, valve bodies, valve components, valve guides, valve seats, wear plates, welding jaws, worms, worms wheels
Marine: covers for marine hardware, marine applications, 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
C95500 B505
  QQ-C-390, G3 MIL-B-16033, Class 4 Aluminum bronze 9D

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/in3 at 68 °F)
C95500 50 0.272

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  
95 655 42 290 10 208  

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 1930 °F 1054 °C
Melting point - solidus 1900 °F 1038 °C
Density 0.272 lb/in3 at 68 °F 7.53 gm/cm3 at 20 °C
Specific gravity 7.53 7.53
Electrical conductivity 8% IACS at 68 °F 0.049 MegaSiemens/cm at 20 °C
Thermal conductivity 24.2 Btu/sq ft/ft hr/°F at 68 °F 41.9 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 16000 ksi 110000 MPa
Magnetic Permeability* 1.32 1.32
Magnetic Permeability** 1.2 1.2
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 50

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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