Nov 12 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Welding
Heat Treatment
Introduction
Manganese-aluminium/aluminum bronze copper casting alloy UNS C95700 is an alloy of copper-aluminum-iron and copper-aluminum/aluminum-iron-nickel.
The following datasheet provides the chemical composition and properties of UNS C95700 copper alloy.
Chemical Composition
The chemical composition of the UNS C95700 alloy is given in the following table.
|
Element |
Content (%) |
|
Cu |
75 |
|
Pb |
0.030 |
|
Fe |
2.0 - 4.0 |
|
Ni |
1.50 - 3.0 |
|
Mn |
11.0 - 14.0 |
|
Si |
0.10 |
|
Al |
7.0 - 8.50 |
|
Other |
0.50 |
Physical Properties
The following table details the physical properties of UNS C95700 copper alloy.
|
Properties |
Metric |
Imperial |
|
Density |
7.53 g/cm3 |
0.272 lb/in³ |
Mechanical Properties
The mechanical properties of the UNS C95700 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 |
180 |
180 |
|
Elongation at break |
20.00% |
20.00% |
|
Machinability |
50 |
50 |
|
Izod impact |
27.00 J |
19.9 ft.lb |
|
Compressive strength |
1035 MPa |
150100 psi |
|
Fatigue strength |
231 MPa |
33500 psi |
|
Hardness, Rockwell B |
85.0 - 90.0 |
85.0 - 90.0 |
|
Tensile strength |
620 MPa |
89900 psi |
|
Yield strength |
275 MPa |
39900 psi |
|
Reduction of area |
24.00% |
24.00% |
|
Creep strength |
31.0 MPa |
4500 psi |
|
Shear modulus |
44.0 GPa |
6380 ksi |
Thermal Properties
The following table outlines the thermal properties of UNS C95700 copper alloy.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@20.0 - 300°C/68.0 - 572°F) |
17.6 µm/m°C |
9.78 µin/in°F |
|
Thermal conductivity (@20°C/68°F) |
12.1 W/mK |
84.0 BTU in/hr.ft²°F |
Other Designations
Equivalent designations to UNS C95700 alloy include:
-
ASTM B148
-
ASTM B30
-
ASTM B505
-
QQ C390
Fabrication and Heat Treatment
Machinability
UNS C95700 copper alloy has a machinability rating of 50.
Welding
The preferred welding technique for UNS C95700 alloy is soldering, brazing, carbon arc welding, gas shielded arc welding and coated metal arc welding. Oxyacetylene welding is not recommended for this alloy.
Heat Treatment
The stress relieving temperature of UNS C95700 copper alloy is 316°C (600°F). It does not respond to heat treatment.