Copper Sand Cast Alloy (UNS C89325) – Mechanical Properties

UNS C89325 has a copper content of not less than 84%.

Tabulated below are the mechanical properties of UNS C89325 sand cast alloy as a function of heat treatment.

TemperTensile Str.Yield Str.Elong.
M01244MPa (35ksi)126MPa (18ksi)20%

Cast C89325

C89325 is a C937 lead-free replacement alloy. C89325 supports the market demand for lead-free material and compliance with the 3874 Reduction of Lead in Drinking Water Act (effective January 2014).


C89325 Product description: Bismuth tin bronze

Shape/Form: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar
Compliance: C89325 is compliant with key legislation including

(1) Federal Safe Drinking Water Act – SDWA,

(2) S. 3874 Federal Reduction of Lead in Drinking Water Act,

(3) California AB1953, and

(4) Vermont Act 193

*Consult mill for wall thickness

Typical uses

Industrial: bushings, high-speed/high-pressure bearings

Chemical composition

Chemical composition provided by CDA10.01-2.0% as any single or combination of Ce La or other rare earth(x) elements as agreed upon. (x)ASM International definition: one of the group of chemically similar metals with atomic numbers 57 through 71 commonly referred to as lanthanides 2Ni value includes Co.Note: Cu + sum of named elements, 99.0% min. Single values represent maximums.


Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)

Mechanical properties

Tensile strength, minYield strength, at 0.5% extension under load,, minElongation, in 2 in. or 50 mm minBrinell hardness (500 kg load)Remarks
ksiMPaksiMPa%typical BHN

Physical properties

US CustomaryMetric
Melting point – liquidus1805 °F985 °C
Melting point – solidus1432 °F777 °C
Density0.323 lb/in3 at 68 °F8.94 gm/cm3 at 20 °C
Specific gravity8.948.94
Electrical conductivity10.8% IACS at 68 °F0.062 MegaSiemens/cm at 20 °C
Thermal conductivity29 Btu/sq ft/ft hr/°F at 68 °F50.2 W/m at 20 °C
Coefficient of thermal expansion 68-39210.3 · 10-6 per °F (68-392 °F)17.8 · 10-6 per °C (20-200 °C)
Specific heat capacity0.089 Btu/lb/°F at 68 °F372.9 J/kg at 20 °C
Modulus of elasticity in tension16400 ksi113074 MPa
Physical properties provided by CDA

Fabrication properties

Oxyacetylene weldingNot recommended
Gas shielded arc weldingNot recommended
Coated metal arc weldingNot recommended
Machinability rating80
Fabrication properties provided by CDA