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.

TemperTensile Str.Yield Str.Elong.
M01237MPa (34ksi)105MPa (15ksi)20%

Typical uses

Industrial: corrosion-resistant/pressure-tight castings, high-speed/heavy-pressure bearings, impellers, pumps

Category:

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%1Pb%Sn%Zn%Fe%PNi%2Al%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
0.102.70-
3.70
2.00-
4.00
0.300.051.000.0052.70-
3.70
0.080.250.005

Machinability

Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)
C89831850.318

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
292001390555

Physical properties

Physical properties provided by CDA
US CustomaryMetric
Melting point – liquidus1893 °F1033 °C
Melting point – solidus1518 °F825 °C
Density0.318 lb/in3 at 68 °F8.81 gm/cm3 at 20 °C
Specific gravity8.818.81
Electrical conductivity20.38% IACS at 68 °F0.117 MegaSiemens/cm at 20 °C
Thermal conductivity50 Btu/sq ft/ft hr/°F at 68 °F86.6 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 capacity0.092 Btu/lb/°F at 68 °F385.4 J/kg at 20 °C
Modulus of elasticity in tension13700 ksi94458 MPa

Fabrication properties

Fabrication properties provided by CDA
TechniqueSuitability
SolderingExcellent
BrazingGood
Oxyacetylene weldingNot recommended
Gas shielded arc weldingNot recommended
Coated metal arc weldingPoor
Machinability rating85