Copper Alloy (UNS C94400)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Welding
     Heat Treatment
Applications

Introduction

There are 400 different kinds of copper alloys available. It is possible to freely form alloys with copper more easily than with most metals. The commonly used alloying elements include zinc, tin, manganese, lead, and silicon.

The following datasheet gives an overview of UNS C94400 copper casting alloy.

Chemical Composition

The following table shows the chemical composition of UNS C94400 copper alloy.

Element Content (%)
Copper, Cu 81
Lead, Pb 11
Tin, Sn 8

Physical Properties

The physical properties of UNS C94400 copper alloy are tabulated below.

Properties Metric Imperial
Density 9.08 g/cm3 0.328 lb/in3

Mechanical Properties

The mechanical properties of UNS C94400 copper alloy are outlined in the following table.

Properties Metric Imperial
Tensile strength (as cast) 221 MPa 32100 psi
Yield strength (as cast) 110 MPa 16000 psi
Elastic modulus 117 GPa 17000 ksi
Poisson's ratio 0.34 0.34
Elongation at break (as cast) 18% 18%
Hardness, Brinell (500 kg) 55 55
Machinability (UNS C36000 (free-cutting brass) = 100) 80 80

Other Designations

Looking for equipment to analyze your metals?

Let us source quotes for you for X-Ray Fluorescence Analyzers, Optical Emission Spectrometers, Atomic Absorption Spectrometers or any other analysis instrument you are looking for.

Other designations that are equivalent to UNS C94400 copper alloy include:

  • ASTM B30
  • ASTM B66

Fabrication and Heat Treatment

Machinability

The machinability rate of UNS C94400 copper alloy is 80.

Welding

UNS C94400 copper alloy can be welded using brazing and soldering processes. Carbon arc welding, oxyacetylene welding, coated metal arc welding, and gas shielded arc welding techniques are not used for welding this alloy.

Heat Treatment

UNS C94400 copper alloy can be stress relieved at 260°C (500°F). The time taken for stress relieving is 1 hr/ in. of section thickness. It does not respond to heat treatment.

Applications

UNS C94400 copper alloy can be used in bearings and bushings.

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