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
| Cu% | Pb% | Sn% | Zn% | Fe% | P% | Ni%1 | Al% | 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 | 0.09 | 6.00- 7.50 | 2.00- 4.00 | 0.20 | 0.10 | 1.00 | 0.005 | 1.70- 2.70 | 0.08 | 0.35 | 0.005 |
Machinability
| Copper alloy UNS No. | Machinability rating | Density (lb/in3 at 68 °F) |
|---|---|---|
| C89835 | 70 | 0.321 |
Mechanical properties
| Tensile strength, min | Yield strength, at 0.5% extension under load,, min | Elongation, in 2 in. or 50 mm min | Brinell hardness (500 kg load) | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical BHN | |
| 30 | 207 | 14 | 97 | 6 | 65 | |
Physical properties
Physical properties provided by CDA | |||||||||||
| US Customary | Metric | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Melting point – liquidus | 1855 °F | 1012 °C | |||||||||
| Melting point – solidus | 1445 °F | 785 °C | |||||||||
| Density | 0.321 lb/in3 at 68 °F | 8.89 gm/cm3 at 20 °C | |||||||||
| Specific gravity | 8.89 | 8.89 | |||||||||
| Electrical conductivity | 14.5 % IACS at 68 °F | 0.084 MegaSiemens/cm at 20 °C | |||||||||
| Thermal conductivity | 38.0 Btu/sq ft/ft hr/°F at 68 °F | 65.8 W/m at 20 °C | |||||||||
| Coefficient of thermal expansion 68-392 | 10 · 10-6 per °F (68-392 °F) | 17.3 · 10-6 per °C (20-200 °C) | |||||||||
| Specific heat capacity | 0.093 Btu/lb/°F at 68 °F | 389.6 J/kg 20 °C | |||||||||
| Modulus of elasticity in tension | 16900 ksi | 116522 MPa | |||||||||
Fabrication properties
Fabrication properties provided by CDA | |||||||||||
| Technique | Suitability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Soldering | Excellent | ||||||||||
| Brazing | Good | ||||||||||
| Oxyacetylene welding | Not recommended | ||||||||||
| Gas shielded arc welding | Not recommended | ||||||||||
| Coated metal arc welding | Not recommended | ||||||||||
| Machinability rating | 70 | ||||||||||
