Aluminium Bronze – Copper Alloy UNS C62300

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

Aluminium bronze is an alloy consisting of about 6% of nickel and iron and 9 to 12% of aluminium. It has high wear and corrosion resistance, and high strength. The UNS C62300 copper alloy has good corrosion and acid resistance.

The following datasheet provides an overview of the UNS C62300 copper alloy.

Chemical Composition

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

Element Content (%)
Copper, Cu 82.2-89.5
Aluminium, Al 8.5-11.0
Iron, Fe 2.0-4.0
Manganese, Mn ≤0.6
Tin, Sn ≤0.5
Silicon, Sn ≤0.25
Other ≤0.5

Physical Properties

The following table shows physical properties of the UNS C62300 copper alloy.

Properties Metric Imperial
Density 7.65 g/cc 0.276 lb/in³
Melting point 1041°C 1905°C

Mechanical Properties

The mechanical properties of the UNS C62300 copper alloy are tabulated below.

Properties Metric Imperial
Hardness, Rockwell B 89 89
Tensile strength 605 MPa 87700 psi
Yield strength 305 MPa 44200 psi
Elongation at break ( in 50 mm, 15% reduction in area) 15% 15%
Elastic modulus 117 GPa 17000 ksi
Poisson’s ratio 0.34 0.34
Charpy impact (V-notch) 25.0-40.0 J 18.4-29.5 ft-lb
Izod impact 43.0-47.0 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 the UNS C62300 copper alloy are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 20-300°C/68-572°F) 16.2 µm/m°C 9.00 µin/in°F
Thermal conductivity (@ 20°C/68°F) 54.4 W/mK 378 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to the 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 rating of the UNS C62300 copper alloy is 50.

Welding

The UNS C62300 copper alloy can be welded using seam welding, gas shielded arc welding, coated metal arc welding, spot welding, brazing, and butt welding methods. Soldering and oxyacetylene welding are not preferred for this alloy.

Forging

The UNS C62300 copper alloy can be forged at temperatures ranging from 705 to 872°C (1300 to 1600°F). The hot forgeability rating of this alloy is 75.

Hot Working

The UNS C62300 copper alloy has good hot forming capacity.

Cold Working

UNS C62300 also has good cold working capacity.

Annealing

The UNS C62300 copper alloy can be annealed at temperatures ranging from 594 to 649°C (1100 to 1200°F).

Applications

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

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Submit