Aluminium Bronze UNS C95410 – Copper Alloy

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications

Introduction

Aluminium bronzes contain 5 to 12% of aluminium, nickel, silicon, manganese, and iron. They are copper alloys found in wrought and cast form. Due to the presence of hard, adherent, protective alumina film, they are stronger than brasses or tin bronzes. They have high corrosion resistance, and are available in golden color.

Chemical Composition

The chemical composition of the UNS C95410 copper alloy is outlined in the following table.

Element Content (%)
Cu 85
Fe 4
Al 11
Ni 2

Physical Properties

The physical properties of UNS C95410 copper alloy are tabulated below.

Properties Metric Imperial
Density 7.45 g/cm3 0.269 lb/in3
Melting point 1025 - 1040°C 1877 - 1900°F

Mechanical Properties

The following table shows mechanical properties of UNS C95410 copper alloy.

Properties Metric Imperial
Hardness, Brinell (as cast; 3000 kg) 170 170
Hardness, Brinell (TQ50 temper; 3000 kg) 195 195
Hardness, Rockwell B (as cast) 83 83
Hardness, Rockwell B (TQ50 temper) 94 94
Tensile strength, ultimate (as cast) 515 MPa 74700 psi
Tensile strength, ultimate (TQ50 temper) 620 MPa 89900 psi
Tensile strength, yield (as cast) 205MPa 29700 psi
Tensile strength, yield (TQ50 temper) 310 MPa 45000 psi
Elongation at break (TQ50 temper, in 50 mm) 8.00% 8.00%
Elongation at break (as cast, in 50 mm) 12.00% 12.00%
Reduction of area (TQ50 temper) 6.00% 6.00%
Reduction of area (as cast) 12.00% 12.00%
Creep strength (for 10E-5%/h, at 425°C) 20.0 MPa 2900 psi
Creep strength (for 10E-5%/h, at 370°C) 30.0 MPa 4350 psi
Creep strength (for 10E-5%/h, at 315°C) 51.0 MPa 7400 psi
Creep strength (for 10E-5%/h, at 230°C) 115 MPa 16700 psi
Modulus of elasticity 110 GPa 16000 ksi
Compressive strength (as cast) 940 MPa 136000 psi
Compressive strength (TQ50 temper) 1070 MPa 155000 psi
Poisson’s ratio 0.316 0.316
Charpy impact (keyhole, TQ50 temper) 9.00 J 6.64 ft-lb
Charpy impact (keyhole, as cast) 15.0 J 11.1 ft-lb
Izod impact (TQ50 temper) 15.0 J 11.1 ft-lb
Fatigue strength (@# of cycles 1.00e+8, reverse bending) 240 MPa 34800 psi
Machinability (UNS C36000 (free-cutting brass) = 100%) 60% 60%
Shear modulus 41 GPa 5950 ksi

Thermal Properties

The thermal properties of UNS C95410 copper alloy are outlined in the following table.

Properties Metric Imperial
CTE, linear(@ 20.0 - 300°C/68.0°C - 572°F) 16.2 μm/m°C 9.00 μin/in°F
Specific heat capacity 0.420 J/g°C 0.100 BTU/lb°F
Thermal conductivity (@ 20.0°C/68.0°F) 59.0 W/m-K 409 BTU-in/hr-ft< sup> °F
Solidus 1025°C 1877°F
Liquidus 1040°C 1900°F

Applications

Aluminium bronzes are mainly used in sea water applications that include:

  • Bearings
  • Pipe fittings
  • Pumps and valve components
  • Fasteners
  • Heat exchangers

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