Copper Alloy (UNS C67000)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication
Applications

Introduction

Copper and its alloys are particularly known for their good electrical and thermal conductivity. They also exhibit a strong resistance to corrosion through atmospheric elements and sea water. The nature and the amount of impurities determine the application of the copper alloy.

Copper UNS C67000 alloy is an alloy of magnesium and bronze and is referred to as manganese bronze. It is available in the form of sheets and rolled bars.

This datasheet will elaborate on the chemical composition, properties and applications of copper UNS C67000 alloy.

Chemical Composition

The chemical composition of copper alloy UNS C67000 is given in the following table.

Element Content (%)
Copper, Cu 63-68
Aluminum, Al 3.0-6.0
Manganese, Mn 2.5-5.0
Iron, Fe 2.0-4.0
Tin, Sn 0.5
Lead, Pb 0.2
Zinc, Zn Remainder

Physical Properties

The following table discusses the physical properties of copper alloy UNS C67000 (H01 Temper).

Properties Metric Imperial
Density 8.35 gm/cm3 0.302 lb/in3

Mechanical Properties

The mechanical properties of copper alloy UNS C67000 (H01 Temper) are tabulated below.

Properties Metric Imperial
Tensile strength 386 MPa 55.9 ksi
Modulus of elasticity 110 GPa 16000 ksi

Other Designations

Some of the other designations that are used to denote copper UNS C67000 are as below:

  • ASTM B138
  • SAE J461
  • SAE J46

Fabrication

Machinability: The machinability rating of this alloy is 30.

Welding Methods: Welding processes such as seam welding, spot welding and butt welding are best suited for working on this alloy. Processes such as soldering and brazing are also rated excellent for this alloy. Oxyacetylene welding is rated ‘good’ for this alloy. Gas shielded arc welding process is rated ‘fair’ for this alloy. Coated metal arc welding process is not recommended for this alloy.

Forging – Hot forging characteristics are not known for this alloy.

Hot working – The hot working abilities of copper UNS C65400 alloy are rated fair.

Cold working - Copper UNS C65400 alloy has excellent cold working properties.

Annealing : The maximum annealing temperature for this alloy varies from 499 to 705°C (930-1300°F).

Applications

Copper UNS C67000 is used for industrial purposes in the manufacture of resistance weldable brass products.

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