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.

Category:

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

Cu%Pb%Sn%Zn%Fe%P%Ni%1Al%Bi%S%Sb%Si%
Chemical composition provided by CDA
1Ni value includes Co.
Note: Cu + sum of named elements, 99.0% min. Single values represent maximums.
85.00-
89.00
0.096.00-
7.50
2.00-
4.00
0.200.101.000.0051.70-
2.70
0.080.350.005

Machinability

Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)
C89835700.321

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
302071497665

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
TechniqueSuitability
SolderingExcellent
BrazingGood
Oxyacetylene weldingNot recommended
Gas shielded arc weldingNot recommended
Coated metal arc weldingNot recommended
Machinability rating70