Copper Casting Alloy UNS C90800

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations

Introduction

Pure copper has good thermal and electrical conductivity. Alloying elements such as tin, zinc, nickel, beryllium etc., are added to copper to improve its characteristics. For instance, silicon is added to improve wear resistance, lead is added to improve its machinabilty, and tin, aluminum, nickel, iron and silicon are added to improve its corrosion resistance.

As much as 400 copper alloys are available with unique characteristics to suit various applications. The following datasheet will discuss the UNS C90800 copper casting alloy.

Chemical Composition

The chemical composition of the UNS C90800 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 87
Tin, Sn 12
Phosphorus, P 0.2

Physical Properties

The physical properties of the UNS C90800 copper alloy are tabulated below.

Properties Metric Imperial
Density 8.67 g/cc 0.313 lb/in³

Mechanical Properties

The following table shows mechanical properties of the UNS C90800 copper alloy.

Mechanical Properties Metric Imperial
Hardness, Brinell (500kg) 95 95
Tensile strength, ultimate ³ 345 MPa ³ 50000 psi
Tensile strength, yield ³ 145 MPa ³ 21000 psi
Elongation at break ³ 12.0 % ³ 12.0 %
Poisson's ratio 0.34 0.34
Elastic modulus 117 GPa 16969.4 ksi

Other Designations

Other designations that are equivalent to the UNS C90800 copper alloy include:

  • ASTM B30
  • ASTM B427

Date Added: Aug 20, 2012 | Updated: Aug 22, 2012
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