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C93200 Bearing Bronze available from Dura-Bar Metal Services. #

Bearing Bronze C93200 (SAE 660)

C93200 (SAE 660) Bearing Bronze is considered the standard bearing material for light duty applications. While it is easily machined, the bronze alloy is hard, strong and resistant to wear. It also conforms well to journal irregularities and is less dependent on lubrication than other alloys. The alloy has reasonable corrosion resistance to seawater and brine.

Also known as: CDA 932, SAE 660, J461, J462, ASTM B-30 Alloy C93200, ASTM B-66 Alloy C93200, ASTM B144-3B, ASTM B-271 Alloy C93200, ASTM B-505 Alloy C93200, ASTM B-584 Alloy C93200, ASTM B763 Alloy C93200, QQC-390 Alloy E7, QQC-390 Rev. A/B Alloy C93200, Asarcon 773, 83-7-7-3, Mil B-11553-12, Mil C-15345-12, Din Rg 7, Ingot 315, CC493K, CuSn7ZnPb.

Chemical Composition
Cu% Sn% Pb% Zn% Fe% Ni% Sb% P% S% AI% Mn% Si%
0.20 *1.00 0.35 1.5 0.08 0.005 N/A 0.005

*In determining copper minimum, copper may be calculated as copper plus nickel

Typical Uses

Automotive Fittings
General Purpose Bushings, Bearings, Insert Bearings, Pump Fixtures, Fittings, Thrust Washers, Pumps, Bushings, Machine Parts, Main Spindle Bearings, Fuel Pump Bushings, Water Pump Bushings, Hydraulic Press Main Lining, Diesel Engine Wrist Pin Bushings, Fuel Pump Bearings, Trunion Bearings, Roll Neck Bearings, Rolling Mill Bearings, Linkage Bushings for Presses, Hydraulic Press Stuffing Box, Forging Press Toggle Lever Bearings, Bearings for Cranes, Machine Tool Bearings, Pump Impellers.

Bearing Bronze Properties 

Mechanical - Bearing Bronze
Tensile Strength, min 35 ksi 241 MPa
Yield Strength @ .5% ext under load min 20 ksi 138 MPa
Elongation in 2 in. or 50 mm min, % 10
Brinell Hardness, min N/A
Machinability Rating 70%
Physical - Bearing Bronze
  US Customary Metric
Melting Point-Liquidus 1790 F 977 C
Melting Point-Solidus 1570 F 854 C
Desnity 0.322 lb/in3
@ 68 F
8.91 gm/cm3
@ 20 C
Specific Gravity 8.910 8.91
Electrical Resistivity 85.90 ohms-cmil/ft
@ 68 F
14.29 microhm-cm
@ 20 C
Electrical Conductivity 120 %IACS @ 68 F 0.07 MegaSiemens/
cm @ 20 C
Thermal Conductivity 33.60 Btu ft/
(hr ft2 oF) @ 68 F
58.2 W/m oK @ 20 C
Coefficient of
Thermal Expansion
100 10-6 per oF
(68-212 F)
18.0 10-6 per oC
(20-100 C)
Specific Heat Capacity 0.090 Btu/lb/oF
@ 68 F
377.1 J/kg oK
@ 293 K
Modulus of Elasticity
in Tension
14500 ksi 100000 MPa
Magnetic Permeability* 10 1.0
*Field Strength 16 kA/m
Fabrication - Bearing Bronze
Joining Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended