Cast C89835
C89835 is a C932, C836 and C844 lead-free replacement alloy and is offered as a standard-stocked product. Randall Bearings maintains an inventory of this alloy numbering over 100 items and in sizes up to 5.0" O.D. C89835 supports the market demand for lead-free material and compliance with the S. 3874: Reduction of Lead in Drinking Water Act (effective January 2014).
Information
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: 105”
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 1974 – SDWA, (2) Federal Reduction of Lead in Drinking Water Act 2011 and (3) California AB1953
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% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
¹Ni value includes Co.
Note: Cu + sum of named elements, 99.0% min. Single values represent maximums.
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
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1855 °F | 1012 °C |
| Melting point - solidus | 1445 °F | 785 °C |
| Density | 0.321 lb/in³ at 68 °F3 | 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 at 20 °C |
| Modulus of elastic in tension | 16900 ksi | 116522 MPa |
Fabrication properties
| 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 |
Fabrication properties provided by CDA