Manufacturer of custom machined parts

Cast C89844

C89844 is a C844 lead-free replacement alloy. C89844 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: C89844 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

Plumbing: fittings/valves for potable water

Chemical composition


¹Ni value includes Co.
Note: Cu + sum of named elements, 99.3% 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 - liquidus1850 °F 1010 °C
Melting point - solidus1550 °853 °C
Density0.310 lb/in³ at 68 °F38.58 gm/cm³ at 20 °C
Specific gravity8.588.58
Electrical conductivity16.8% IACS at 68 °F 0.095 MegaSiemens/cm at 20 °C
Thermal conductivity46.7 Btu/sq ft/ft hr/°F at 68 °F 80.9 W/m at 20 °C
Coefficient of thermal expansion 68-39210 · 10-6 per °F (68-392 °F)17.3 · 10-6 per °C (20-200 °C)
Specific heat capacity0.08 Btu/lb/°F at 68 °F335.2 J/kg at 20 °C
Modulus of elastic in tension13000 ksi89622 MPa

Fabrication properties

Oxyacetylene weldingNot recommended
Gas shielded arc weldingNot recommended
Coated metal arc weldingNot recommended
Machinability rating70

Fabrication properties provided by CDA

*Since brazing is performed withing the hot-short range, strain must be avoided during brazing and cooling.

Thermal properties

Stress relief500
Solution treatment0

Thermal properties provided by CDA

*Temperature is measured in Fahrenheit. **For stress relief, solution treatment and annealing - time is measured in hours/inch of thickness. For precipitation heat treatment - time is measured in hours.

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