Sep 13 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Welding
Heat Treatment
Introduction
Pure copper has good electrical and thermal conductivity. More than 400 varieties of copper alloys are available. Alloys can be freely formed by copper than by most metals.
The following datasheet gives an overview of UNS C92200 copper casting alloy.
Chemical Composition
The following table shows chemical composition of UNS C92200 copper alloy.
|
Element |
Content (%) |
|
Cu |
86.0-90.0 |
|
Sn |
5.50-6.50 |
|
Zn |
3.0-5.0 |
|
Pb |
1.0-2.0 |
|
Ni |
1.0 |
|
Sb |
0.25 |
|
Fe |
0.25 |
|
P |
0.050 |
|
S |
0.050 |
|
Si |
0.0050 |
Physical Properties
The physical properties of UNS C92200 copper alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
8.64 g/cm3 |
0.312 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C92200 copper alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Hardness, Brinell |
65 |
65 |
|
Tensile strength |
275 MPa |
39900 psi |
|
Yield strength (@ 0.500% ) |
140 MPa |
20300 psi |
|
Elongation at break (in 50 mm) |
30% |
30% |
|
Reduction of area (@ 285°C/545°F) |
30% |
30.00% |
|
Creep strength (for 10E-5%/h, at 288°C) |
43 MPa |
6240 psi |
|
Creep strength (for 10E-5%/h, at 232°C) |
77.2 MPa |
11200 psi |
|
Creep strength (for 10E-5%/h, at 232°C) |
110 MPa |
16000 psi |
|
Rupture strength (@ 290 °C, Time 3.42e+6 sec/@ 554°F, Time 950 hour) |
80 MPa |
11600 psi |
|
Modulus of elasticity |
117 GPa |
17000 ksi |
|
Tensile modulus (@ 285°C/545°F) |
66 GPa |
9570 ksi |
|
Compressive strength (at permanent set of 10%) |
105 MPa |
15200 psi |
|
Compressive strength (at permanent set of 0.1%) |
260 MPa |
37700 psi |
|
Fatigue strength (@# of cycles 5.00e+7-3.00e+8) |
75 MPa |
10900 psi |
|
Fatigue strength (@# of cycles 1.00e+8, rotating beam) |
76 MPa |
11000 psi |
|
Machinability (UNS C36000 (free-cutting brass) = 100) |
42 |
42 |
|
Poisson's ratio |
0.34 |
0.34 |
Thermal Properties
The thermal properties of UNS C92200 copper alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@ 100°C/212°F) |
16.7 µm/m°C |
9.28 µin/in°F |
|
Thermal conductivity (@ 15°C/59°F) |
69 W/mK |
479 BTU in/hr.ft².°F |
Other Designations
Other designations that are equivalent to UNS C92200 copper alloy include:
-
ASME SB584
-
ASME SB61
-
ASTM B271
-
ASTM B30
-
ASTM B505
-
ASTM B584
-
ASTM B61
-
MIL V-17547
-
QQ C390
-
SAE J461
-
SAE J462
Fabrication and Heat Treatment
Machinability
The machinability rating of UNS C92200 copper alloy is 42.
Welding
UNS C92200 copper alloy can be welded using brazing and soldering processes. Carbon arc welding, oxyacetylene welding, coated metal arc welding, and gas shielded arc welding methods are not used for welding this alloy.
Heat Treatment
UNS C92200 copper alloy can be stress relieved at 260°C (500°F). The time taken for stress relieving is about 1 hr/ in. of section thickness. It does not respond to heat treatment.