C89325 – Lead-free replacement for C937

Manufacturer of custom machined parts

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).


Product description: Bismuth tin bronze
Solids: 1/2” to 10” O.D.
Tubes: 1 1/8” to 9” O.D.
Rectangles: Up to 15”
Standard lengths: 144”
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 1974 – SDWA, (2) Federal Reduction of Lead in Drinking Water Act 2011 and (3) California AB1953

Typical uses

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

Chemical composition


¹.01-2.0% 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 °F 985 °C
Melting point - solidus1432 °F 777 °C
Density0.323 lb/in³ at 68 °F38.94 gm/cm³ at 20 °C
Specific gravity8.948.94
Electrical conductivity10.8% IACS at 68 °F 0.062 MegaSiemens/cm at 20 °C
Thermal conductivity29 Btu/sq ft/ft hr/°F at 68 °F 50.2 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 elastic in tension16400 ksi113074 MPa

Fabrication properties

Oxyacetylene weldingNot recommended
Gas shielded arc weldingNot recommended
Coated metal arc weldingNot recommended
Machinability rating80

Fabrication properties provided by CDA

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