Copper Sand Cast Alloy (UNS C89325) – Mechanical Properties
UNS C89325 has a copper content of not less than 84%.
Tabulated below are the mechanical properties of UNS C89325 sand cast alloy as a function of heat treatment.
| Temper | Tensile Str. | Yield Str. | Elong. |
|---|---|---|---|
| M01 | 244MPa (35ksi) | 126MPa (18ksi) | 20% |
Cast C89325
C89325 is a C937 lead-free replacement alloy. C89325 supports the market demand for lead-free material and compliance with the 3874 Reduction of Lead in Drinking Water Act (effective January 2014).
C89325 Product description: Bismuth tin bronze
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: C89325 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, and
(4) Vermont Act 193
*Consult mill for wall thickness
Typical uses
Industrial: bushings, high-speed/high-pressure bearings
Chemical composition
| Cu%1 | Pb% | Sn% | Zn% | Fe% | P | Ni%2 | Al% | Bi% | S% | Sb% | Si% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 84.00- 88.00 | 0.10 | 9.00- 11.00 | 1.00 | 0.15 | 0.10 | 1.00 | 0.005 | 2.70- 3.70 | 0.08 | 0.50 | 0.005 |
| Chemical composition provided by CDA10.01-2.0% as any single or combination of Ce La or other rare earth(x) elements as agreed upon. (x)ASM International definition: one of the group of chemically similar metals with atomic numbers 57 through 71 commonly referred to as lanthanides 2Ni 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) |
|---|---|---|
| C89325 | 80 | 0.323 |
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 | 12 | 83 | 4 | 73 | |
Physical properties
| US Customary | Metric | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Melting point – liquidus | 1805 °F | 985 °C | |||||||||
| Melting point – solidus | 1432 °F | 777 °C | |||||||||
| Density | 0.323 lb/in3 at 68 °F | 8.94 gm/cm3 at 20 °C | |||||||||
| Specific gravity | 8.94 | 8.94 | |||||||||
| Electrical conductivity | 10.8% IACS at 68 °F | 0.062 MegaSiemens/cm at 20 °C | |||||||||
| Thermal conductivity | 29 Btu/sq ft/ft hr/°F at 68 °F | 50.2 W/m at 20 °C | |||||||||
| Coefficient of thermal expansion 68-392 | 10.3 · 10-6 per °F (68-392 °F) | 17.8 · 10-6 per °C (20-200 °C) | |||||||||
| Specific heat capacity | 0.089 Btu/lb/°F at 68 °F | 372.9 J/kg at 20 °C | |||||||||
| Modulus of elasticity in tension | 16400 ksi | 113074 MPa | |||||||||
| Physical properties provided by CDA | |||||||||||
Fabrication properties
| Technique | Suitability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Soldering | Good | ||||||||||
| Brazing | Good | ||||||||||
| Oxyacetylene welding | Not recommended | ||||||||||
| Gas shielded arc welding | Not recommended | ||||||||||
| Coated metal arc welding | Not recommended | ||||||||||
| Machinability rating | 80 | ||||||||||
| Fabrication properties provided by CDA | |||||||||||
