Copper Sand Cast Alloy (UNS C89831) – Mechanical Properties
Copper UNS C89831 has a copper content of not less than 87%.
The following table shows the mechanical properties of UNS C89831 sand cast alloy as a function of heat treatment.
Temper | Tensile Str. | Yield Str. | Elong. |
---|---|---|---|
M01 | 237MPa (34ksi) | 105MPa (15ksi) | 20% |
Typical uses
Industrial: corrosion-resistant/pressure-tight castings, high-speed/heavy-pressure bearings, impellers, pumps
C89831 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: 144″
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: C89831 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: corrosion-resistant/pressure-tight castings, high-speed/heavy-pressure bearings, impellers, pumps
Chemical composition
Cu%1 | Pb% | Sn% | Zn% | Fe% | P | Ni%2 | Al% | Bi% | S% | Sb% | Si% |
---|---|---|---|---|---|---|---|---|---|---|---|
Chemical composition provided by CDA 10.01-2.0% 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. | |||||||||||
87.00- 91.00 | 0.10 | 2.70- 3.70 | 2.00- 4.00 | 0.30 | 0.05 | 1.00 | 0.005 | 2.70- 3.70 | 0.08 | 0.25 | 0.005 |
Machinability
Copper alloy UNS No. | Machinability rating | Density (lb/in3 at 68 °F) |
---|---|---|
C89831 | 85 | 0.318 |
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 | |
29 | 200 | 13 | 90 | 5 | 55 |
Physical properties
Physical properties provided by CDA | |||||||||||
US Customary | Metric | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Melting point – liquidus | 1893 °F | 1033 °C | |||||||||
Melting point – solidus | 1518 °F | 825 °C | |||||||||
Density | 0.318 lb/in3 at 68 °F | 8.81 gm/cm3 at 20 °C | |||||||||
Specific gravity | 8.81 | 8.81 | |||||||||
Electrical conductivity | 20.38% IACS at 68 °F | 0.117 MegaSiemens/cm at 20 °C | |||||||||
Thermal conductivity | 50 Btu/sq ft/ft hr/°F at 68 °F | 86.6 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 | 0.092 Btu/lb/°F at 68 °F | 385.4 J/kg at 20 °C | |||||||||
Modulus of elasticity in tension | 13700 ksi | 94458 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 | Poor | ||||||||||
Machinability rating | 85 |