Manufacturer of custom machined parts

Cast C95400

Aluminum bronze is the highest strength standard copper-based alloy. Randall Bearings 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. All of the aluminum bronzes can be heat treated, further increasing tensile strengths.


Product description: Aluminum bronze
Solids: 1/2” to 10” O.D.
Tubes: 1” to 16” O.D.
Rectangles: Up to 20”
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

Typical uses

Building: heavy construction equipment
Fasteners: swivel
Industrial: bearings, bushings, gear blanks, gears, piston rings, pump bodies, pump impellers, valve bodies, valves
Plumbing: steam fittings

Similar or equivalent specification

C95400B505 B505MJ461 J462QQ-C-390, G5; QQ-B-671, Class 3MIL-B-16033, Class 3Aluminum
Bronze 9C

Chemical composition

83.00 min3.00-5.001.5010.00-11.500.50

Chemical composition according to ASTM B505/B505M-23

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


Copper alloy UNS no.Machinability ratingDensity (lb / in³ at 68°F)

Mechanical properties

Tensile strength, minYield strength, at 0.5% extension under load, minElongation, in 2 in. or 50 mm minBrinell hardness (500 kg load)Remarks
ksiMPaksiMPa%typical BHN

Mechanical properties according to ASTM B505/B505M-23

Physical properties

US CustomaryMetric
Melting point - liquidus1900 °F 1038 °C
Melting point - solidus1880 °F 1027 °C
Density0.269 lb/in³ at 68 °F 7.45 gm/cm³ at 20 °C
Specific gravity7.457.45
Electrical conductivity13% IACS at 68 °F 0.075 MegaSiemens/cm at 20 °C
Thermal conductivity33.9 Btu/sq ft/ft hr/°F at 68 °F 58.7 W/m at 20 °C
Coefficient of thermal expansion 68-5729 · 10-6 per °F (68-572 °F)15.5 · 10-6 per °C (20-300 °C)
Specific heat capacity0.1 Btu/lb/°F at 68 °F419 J/kg at 20 °C
Modulus of elastic in tension15500 ksi107000 MPa
Magnetic permeability*1.271.27
Magnetic permeability**1.21.2

Physical properties provided by CDA

*As cast, field strength 16 kA/m **TQ 50 temper, field strength 16 kA/m

Fabrication properties

Oxyacetylene weldingNot recommended
Gas shielded arc weldingGood
Coated metal arc weldingGood
Machinability rating60

Thermal properties

Stress relief600
Solution treatment160016751Water

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.

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