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C93200 Bearing Bronze (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.


Typical Applications

Industrial

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

Automotive

Automotive Fittings

Fasteners

Washers


Chemical Composition

Cu%Sn%Pb%Zn%Fe%Ni%Sb%P%S%AI%Mn%Si%
81.00-
85.00
6.30-
7.50
6.00-
8.00
2.00-
4.00
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


Mechanical Properties

Tensile Strength. min35 ksi241 MPa
Yield Strength @ .5% ext under load min20 ksi138 MPa
Elongation in 2 in. or 50 mm min, %10
Brinell Hardness,minN/A
Machinability Rating70%

Physical Properties

 US CustomaryMetric
Melting Point-Liquidus1790 °F
977 °C
Melting Point-Solidus1570 °F
854 °C 
Density0.322 lb/in 3
@ 68 °F
8.91 gm/cm 3
@ 20 °C
Specific Gravity8.9108.91
Electrical Resistivity85.90 ohms-cmil/ft
@ 68 °F
14.29 microhm-cm
@ 20 °C
Electrical Conductivity12% IACS
@ 68 °F
0.07 MegaSiemens/cm
@ 20 °C
Thermal Conductivity33.60 Btu/sq ft/ft hr/°F
@ 68 °F
58.2 W/m
@ 20 °C
Coefficient of
Thermal Expanision
10 ⋅ 10-6 per °F
(68-212 °F)
18.0⋅ 10-6 per °C
(20-100 °C)
Specific Heat Capacity 0.090 Btu/lb/°F
@ 68 °F
377.1 J/kg
@293 °C
Modulus of Elasticity
in Tension
14500 ksi
100000 MPa
Magnetic Permeability*N/AN/A
*Field Strength 16 kA/m

Fabrication Properties

Joining TechniqueSuitability
SolderingExcellent
BrazingGood
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingNot Recommended
Coated Metal Arc WeldingNot Recommended

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