C93400 High Leaded Tin Bronze
Introduction
Leaded nickel-tin bronze UNS C93400 is a cast alloy of copper-tin-lead. The addition of nickel in the alloy enhances the strength and ductility. UNS C93400 copper alloy is resistant to biofouling and corrosion.
The following datasheet provides the chemical composition and properties of UNS C93400.
Chemical Composition
The chemical composition of UNS C93400 copper alloy is given in the following table.
| Element | Content (%) |
|---|---|
| Cu | 84 |
| Pb | 8 |
| Sn | 8 |
Physical Properties
The following table details the physical properties of UNS C93400 alloy.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.87 g/cm3 | 0.320 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C93400 copper alloy are shown in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 117 GPa | 16969 ksi |
| Poisson's ratio | 0.34 | 0.34 |
| Hardness, Brinell | 60 | 60 |
| Tensile strength | 220 MPa | 31900 psi |
| Yield strength | 110 MPa | 16000 psi |
| Elongation at break | 20.0% | 20.0% |
| Izod impact | 6.80 J | 5.02 ft.lb |
| Compressive strength | 330 MPa | 47900 psi |
| Fatigue strength | 100 MPa | 14500 psi |
Other Designations
Equivalent designations to UNS C93400 include:
ASTM B30
ASTM B505
QQ C390
Fabrication and Heat Treatment
Machinability
UNS C93400 copper alloy has a machinability rating of 70.
Welding
The preferred welding techniques for UNS C93400 are soldering and brazing. Carbon arc welding, oxyacetylene welding, gas shielded arc welding and coated metal arc welding are not recommended for this alloy.
Heat Treatment
The stress relieving temperature of UNS C93400 copper alloy is 260°C (500°F). It does not respond to heat treatment.
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