Sep 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Heat Treatment
Introduction
High-leaded tin bronze UNS C93200 is a cast alloy of copper-tin-lead. The addition of nickel in the alloy improves the strength and ductility. UNS C93200 copper alloy is resistant to biofouling and corrosion.
The following datasheet provides the chemical composition and properties of UNS C93200.
Chemical Composition
The chemical composition of UNS C93200 copper alloy is given in the following table.
| Element |
Content (%) |
| Cu |
83 |
| Pb |
7 |
| Sn |
7 |
| Zn |
3 |
Physical Properties
The following table details the physical properties of UNS C93200 alloy.
| Properties |
Metric |
Imperial |
| Density |
8.93 g/cm3 |
0.323 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C93200 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 |
65 |
65 |
| Tensile strength |
240 MPa |
34800 psi |
| Yield strength |
125 MPa |
18100 psi |
| Elongation at break |
20.0% |
20.0% |
| Machinability |
70 |
70 |
| Izod impact |
8.00 J |
5.90 ft.lb |
| Compressive strength |
315 MPa |
45700 psi |
| Fatigue strength |
110 MPa |
16000 psi |
Thermal Properties
The following table outlines the thermal properties of the UNS C93200 alloy.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@0.0 – 100°C/32.0 - 212°F) |
18.0 µm/m°C |
10.0 µin/in°F |
| Thermal conductivity (@20°C/68°F) |
59.0 W/mK |
409 BTU in/hr.ft²°F |
Other Designations
Equivalent designations to UNS C93200 copper alloy include:
- ASTM B271
- ASTM B30
- ASTM B505
- ASTM B584
- ASTM B763
- QQ C390
- SAE 660
- SAE J461
- SAE J462
Fabrication and Heat Treatment
Machinability
UNS C93200 has a machinability rating of 70.
Welding
The preferred welding techniques for UNS C93200 copper alloy 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 the UNS C93200 alloy is 260°C (500°F). It does not respond to heat treatment.