Copper Casting Alloy UNS C97300

Sep 13 2012

Topics Covered

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

Introduction

UNS C97300 alloy is anti-corrosive and ductile. The addition of iron to the alloy makes it resistant to flowing sea-water. UNS C97300 alloy is used in marine applications, condensers and heat exchangers.

The following datasheet provides chemical composition and properties of UNS C97300 alloy.

Chemical Composition

The chemical composition of UNS C97300 alloy is given in the following table.

Element Content (%)
Cu 56
Sn 2
Pb 10
Ni 12
Zn 20

Physical Properties

The following table details the physical properties of UNS C97300 alloy.

Properties Metric Imperial
Density 8.95 g/cm3 0.323 lb/in³

Mechanical Properties

The mechanical properties of UNS C97300 alloy are shown in the following table.

Properties Metric Imperial
Hardness, Brinell 55 55
Tensile strength 240 MPa 34800 psi
Yield strength 115 MPa 16700 psi
Elongation at break 20.00% 20.00%
Elastic modulus 117 GPa 16969 ksi
Poisson's ratio 0.34 0.34

Thermal properties

The following table discusses the thermal properties of UNS C97300 alloy.

Properties Metric Imperial
Thermal conductivity( @20°C/68°F) 28.5 W/mK 198 BTUin/hr.ft².°F
Thermal expansion co-efficient (@20 - 260°C/68 - 500°F) 16.0 µm/m°C 9.00 µin/in°F

Other Designations

Equivalent designations to UNS C97300 alloy include:

  • ASTM B271
  • ASTM B30
  • ASTM B505
  • ASTM B584
  • ASTM B763
  • SAE J461
  • SAE J462

Fabrication and Heat Treatment

Machinability

UNS C97300 alloy has a machinability rating of 70.

Welding

The preferred welding techniques for UNS C97300 are soldering and brazing. Coated metal arc welding, gas shielded arc welding, carbon arc welding and oxyacetylene welding are not recommended for this alloy.

Heat Treatment

UNS C97300 alloy does not respond to heat treatment.


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