Copper Alloy No. C93200
Copper Alloy No. C93200
SAE660 Bearing Bronze , High Leaded Tin Bronze , 83-7-7-3
ASTM B 505 , ASTM B 271
Chemical ComPOSTTTION % by weight
Element
Nominal
Minimum
Maximum
Aluminum
-
-
.005
Antimony
-
-
.35
Copper
83
81
85
Iron
-
-
.20
Lead
7
6
8
Nickel
-
-
1
Phosphorus
-
-
.15
Silicon
-
-
.005
Sulfur
-
-
.08
Tin
6.7
6.3
7.5
Zinc
3
2
4
C93200 has excellent machining properties, good hardness, strength and wear resistance with excellent antifriction qualities. The alloy is not subject to dezincification and has reasonable corrosion resistance to seawater and brine making it suitable for pump and valve components.
C93200 is suitable for bearings, bushings having medium loads and speeds with adequate lubrications.
Applications
General utility bearings, bushings and wear plate.
Mechanical Properties
M07 - As Continuous Cast
Hardness*
Brinell Hardness (500 kg load)
65
Tensile Strength**
KSI
35 min
Yield Strength **
KSI (0.5% Ext. under load)
20 min
Elongation**
% in 2 inch
10 min
**Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
Thermal Conductivity
BTU/ (sq ft-ft-hr-F)
33.6
Specific Heat
BTU/lb/篎 @ 68F
.09
Thermal Expansion
Per 癋 from 68 F to 392 F
.000010
Density
lb/cu in @ 68 F
.322
Electrical Conductivity* (Annealed)
% IACS @ 68 F
12
Modulus of Elasticity
KSI
14,500
*Volume basis
Fabrication Practices
Stress relieving temperature
500 F or 260 C
Time at temperature
1 hour per inch of section thickness
Responds to heat treatment
No
Machinability rating (Free Cutting Brass=100)
70
Suitability for being joined by:
Soldering/Excellent
Brazing/Good*
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Not Recommended
Coated Metal Arc Welding/Not Recommended
*Since brazing is performed at temperatures within the hot-short range, strain must be avoided during the brazing and cooling of this alloy.
The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in comPOSTTTION and to manufacturing limitations, they should not be used for specification purposes. See applicable A.S.T.M. specification references.
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