Jul 8 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication
Applications
Introduction
Copper UNS C89835 is a bismuth tin bronze cast alloy. It has good machinability,along with good polishing and plating characteristics. It also possesses better castability at lower temperatures.
The following datasheet discusses the chemical composition and properties of copper UNS C89835.
Chemical Composition
The chemical composition of UNS C89835 copper alloy is outlined in the following table.
Element |
Content (%) |
Copper, Cu |
85-89 |
Tin, Sn |
6-7.5 |
Zinc, Zn |
2-4 |
Bismuth, Bi |
1.7-2.7 |
Nickel, Ni |
1 |
Antimony, Sb |
0.35 |
Iron, Fe |
0.2 |
Phosphorous, P |
0.1 |
Lead, Pb |
0.09 |
Sulfur, S |
0.08 |
Silicon, Si |
0.005 |
Aluminum, Al |
0.005 |
Physical Properties
The following table discusses the physical properties of copper UNS C89835.
Properties |
Metric |
Imperial |
Density |
8.89 g/cm3 |
0.321 lb/in3 |
Melting Point – (solidus) |
785°C |
1445°F |
Melting Point – (liquidus) |
1013°C |
1855°F |
Mechanical Properties
The mechanical properties of copper UNS C89835 are tabulated below.
Properties |
Metric |
Imperial |
Tensile strength |
206 MPa |
30 ksi |
Yield strength |
96 MPa |
14 ksi |
Elongation |
6% |
6% |
Hardness |
65 |
65 |
Machinability |
70 |
70 |
Thermal Properties
The thermal properties of copper UNS C89835 are tabulated below.
Properties |
Metric |
Imperial |
Thermal expansion co-efficient (@20-100°C/68-212°F) |
17.3 x 10-6 / °C |
100 x 10-6 /°F |
Thermal conductivity (@20°C/68°F) |
65.8 W/mK |
380 BTU in/hr.ft2.°F |
Fabrication
Welding - Soldering is the best method to use for welding copper UNS C89835, while brazing can provide good results. It is recommended that oxyacetylene welding, gas shielded arc welding, and coated metal arc welding is avoided.
Applications
Copper UNS C89835 finds application in:
-
Faucets
-
Housings
-
Small gears
-
Pipe fittings
-
Plumbing goods
-
Pump components
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Water pump impellers