High-Performance SAE 660 Bronze – Versatile, Wear-Resistant Alloy

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SAE 660 Bronze or C93200 as it also commonly known is a high-leaded tin/ bearing bronze.

SAE 660 is one of the most widely used alloys on the Bronze range, mainly due to its versatility as a medium range Bronze that make it suitable for many applications.

This Bronze has good hardness and strength qualities as well as good wear resistance, it also has excellent machining properties and anti-friction qualities.

SAE 660 will not be subject to de-zincification, and provides a reasonable amount of resistance to seawater and brine that make is suitable for pump and valve components but not as must as PB1 Phosphor Bronze.

It is also suitable for application such as bearings as well as bushings that are under medium loads and speed while using adequate lubrication.

Chemical Composition of SAE 660

	CU	Pb	Sn	Ni	Zn	P
Min	81.0	6.0	6.3		2.0
Max	85.0	8.0	7.5	1.00	4.0	trace

Mechanical Properties of SAE 660

Manufacturing

Process

Tensile

Strength

MPa

Yield Strength

0.2%

MPa

Elongation

Hardness

range

Continuous

Cast

240

140

Centrifugal

Cast

205

Physical Properties of SAE 660

Thermal Conductivity BTU/ (sq ft-ft-hr-°C)	Specific Heat BTU/lb/ºF @ 20 °C	Thermal Expansion Per °C from 20 °C to 200 °C	Density lb/cu in @ 20 °C	Electrical Conductivity* (Annealed) % IACS @ 20 °C	Modulus of Elasticity KSI
33.6	.09	.000010	.322	12	14,500

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