Aluminium / Aluminum Nickel Bronze UNS C62300 – Copper Alloy

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat treatment
     Machinability
     Welding
     Forging
     Hot Working
     Cold Working
     Annealing
Applications

Introduction

UNS C62300 aluminium nickel bronze has high corrosion and acid resistance. It is available in the form of rod and flat products.

Chemical Composition

The chemical composition of UNS C62300 copper alloy is outlined in the following table.

Element Content (%)
Cu 87
Fe 3
Al 10

Physical Properties

The physical properties of UNS C62300 copper alloy are tabulated below.

Properties Metric Imperial
Density 7.65 g/cm3 0.276 lb/in3
Melting point 1040 - 1045°C 1900 - 1913°F

Mechanical Properties

The following table shows mechanical properties of UNS C62300 copper alloy.

Properties Metric Imperial
Hardness, Rockwell B 89 89
Tensile strength, ultimate 605 MPa 87700 psi
Tensile strength, yield (depending on temper) 305 MPa 44200 psi
Elongation at break (in 50 mm, 15% reduction in area) 15% 15%
Modulus of elasticity 115 GPa 16700 ksi
Poisson’s ratio 0.328 0.328
Charpy impact (V-notch) 25 - 40 J 18.4 - 29.5 ft-lb
Charpy impact (@ 427 °C/ 801 °F, annealed) 9 J 6.64 ft-lb
Charpy impact (@ 538°C/ 1000°F, annealed) 10 J 7.38 ft-lb
Charpy impact (@ 20.0 °C/ 68.0 °F, cold finished) 48 J 35.4 ft-lb
Charpy impact (@ 204 °C/ 399 °F, cold finished) 48 J 35.4 ft-lb
Izod impact 43 - 47 J 31.7 - 34.7 ft-lb
Fatigue strength (@# of cycles 1.00e+8, reverse bending) 200 MPa 29000 psi
Machinability (based on 100% machinability for UNS C360000) 50% 50%
Shear modulus 44 GPa 6380 ksi

Thermal Properties

The thermal properties of UNS C62300 copper alloy are outlined in the following table.

Properties Metric Imperial
CTE, linear (@ 20.0 - 300°C/68.0 - 572°F) 16.2 μm/m°C 9.00 μin/in°F
Specific heat capacity 0.375 J/g°C 0.0896 BTU/lb°F
Thermal conductivity (@ 20.0°C/68.0°F) 54.4 W/m-K 378 BTU-in/hr-ft2°F
Solidus 1040°C 1900°F
Liquidus 1045°C 1913°F

Other Designations

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Other designations that are equivalent to UNS C62300 copper alloy include:

  • ASME SB150
  • ASTM B124
  • ASTM B150
  • ASTM B283
  • MIL B-16166
  • SAE J461
  • SAE J463

Fabrication and Heat treatment

Machinability

The machinability of UNS C62300 copper alloy is about 50%.

Welding

UNS C62300 copper alloy can be welded by using various welding methods such as brazing, gas shielded arc welding, spot welding, coated metal arc welding, butt welding, and seam welding.

Forging

UNS C62300 copper alloy is forged at 705 to 871°C (1300 to 1600°F) The forgeability of UNS C62300 copper alloy is about 75%.

Hot Working

UNS C62300 copper alloy has good hot working capacity.

Cold Working

UNS C62300 copper alloy has good cold working capacity.

Annealing

UNS C62300 copper alloy is annealed at 594 to 649°C (1100 to 1200°F).

Applications

UNS C62300 copper alloy is mainly used in pump and valve components for industrial process streams, high strength fasteners, marine equipment, and pole line hardware.

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