C89835 Bismuth Tin Bronze Name and Information

C89835 bismuth tin bronze with a maximum lead content of 0.05%. Bismuth is utilized as a replacement for the lead providing similar characteristics of a lead-based copper alloy.

C89835 is also known in the following related terms: CDA 89835, UNS 89835, B04 bronze, lead-free bronze, bismuth bronze, copper-bismuth bronze, lead-free bismuth bronze, bismuth tin bronze, and lead-free bismuth tin bronze.

The benefits of C89835 include good machinability, plating and polishing characteristics, castability at lower temperatures, and superior microstructural characteristics.

C89835 is a lead-free replacement alloy for C932, C836 and C844, manufactured by LION COPPER in sizes up to 10 inches OD. C89835 supports market demand for regulatory compliant lead-free materials.


C89835 Bismuth tin bronze Product description:

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: C89835 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,(4) Vermont Act 193, and is NSF/ANSI/CAN 61-2022 compliant

*Consult mill for wall thickness

Typical uses

Plumbing: faucets, pump components, pipe fittings, plumbing goods, water pump impellers
Industrial: housings, small gears

Chemical composition

Chemical composition provided by CDA
1Ni 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

Physical properties provided by CDA
US CustomaryMetric
Melting point – liquidus1855 °F1012 °C
Melting point – solidus1445 °F785 °C
Density0.321 lb/in3 at 68 °F8.89 gm/cm3 at 20 °C
Specific gravity8.898.89
Electrical conductivity14.5 % IACS at 68 °F0.084 MegaSiemens/cm at 20 °C
Thermal conductivity38.0 Btu/sq ft/ft hr/°F at 68 °F65.8 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 capacity0.093 Btu/lb/°F at 68 °F389.6 J/kg 20 °C
Modulus of elasticity in tension16900 ksi116522 MPa

Fabrication properties

Fabrication properties provided by CDA
Oxyacetylene weldingNot recommended
Gas shielded arc weldingNot recommended
Coated metal arc weldingNot recommended
Machinability rating70