Aug 21 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Welding
Machinability
Heat Treatment
Introduction
Bronze alloys are many in number and they include:
-
Phosphor bronze
-
Tin bronze
-
Aluminum bronze
-
Silicon bronze
-
Architectural bronze
-
Manganese bronze
The UNS C92500 alloy is a leaded tin bronze copper casting alloy. The datasheet given below provides an overview of the UNS C92500 alloy.
Chemical Composition
The chemical composition of the UNS C92500 leaded tin bronze copper casting alloy is outlined in the following table.
|
Element |
Content (%) |
|
Copper, Cu |
85.0-88.0 |
|
Tin, Sn |
10.0-12.0 |
|
Lead, Pb |
1.0-1.50 |
|
Nickel, Ni |
0.80-1.50 |
|
Zinc, Zn |
0.50 |
|
Phosphorus, P |
0.20-0.30 |
|
Iron, Fe |
0.15 |
|
Aluminium, Al |
0.0050 |
Physical Properties
The following table shows the physical properties of the UNS C92500 alloy.
|
Properties |
Metric |
Imperial |
|
Density |
8.80 g/cm³ |
0.318 lb/in³ |
Mechanical Properties
The mechanical properties of the UNS C92500 alloy are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Hardness, Brinell |
80 |
80 |
|
Tensile strength |
305 MPa |
44200 psi |
|
Yield strength (@strain 0.500%) |
140 MPa |
20300 psi |
|
Elongation at break (in 50 mm) |
20.00% |
20.00% |
|
Machinability |
30 |
30 |
|
Poisson's ratio |
0.34 |
0.34 |
|
Elastic modulus |
117 GPa |
16969 ksi |
Other Designations
Equivalent materials to the UNS C92500 alloy are:
-
ASTM B30
-
ASTM B505
-
QQ C390
-
SAE J461
-
SAE J462
Fabrication and Heat Treatment
Welding
Welding processes suitable for the UNS C92500 alloy include brazing and soldering. Welding processes not recommended for this alloy include gas shielded arc welding, carbon arc welding, coated metal arc welding and oxyacetylene welding.
Machinability
The machinability rating of the UNS C92500 copper alloy is 30.
Heat Treatment
UNS C92500 can be stress relieved at 260°C (500°F), with a hold time of one hour per inch (25mm) of section thickness. This alloy does not react to heat treatment.