C93200 SAE 660 Leaded Tin Bronze

St. Paul
Foundry

St. Paul Foundry 954 Minnehaha Ave West St. Paul MN 55104 651-488-5567 www.stpaulfoundry.com

Simplifying the Supply Chain For High Knowledge Content Components

Compare Alloy Properties

Alloy Specifications, Chemistries, and Technical Data

C93200 LEADED TIN BRONZE

Aliases
CDA NUMBER	C93200
Common Name	SAE 660
Alias	Bearing Bronze
SAE	660
Alias	C932
Alias	932
Alias	83-7-7-3

Nearest Applicable Casting Standards
ASTM (B Series)	B584
SAE (J Series)	461, 462 (was 660)
Federal (QQ-C- Series)	390

Specification Composition
	Minimum	Maximum
Copper (Cu)	81	85
Tin (Sn)	6.3	7.5
Lead (Pb)	6	8
Zinc (Zn)	1	4
Iron (Fe)		0.2
Antimony (SB)		0.35
Nickel (Ni)		1
Sulphur (S)		0.08
Phosphorous (P)		0.15
Aluminum (Al)		0.005
Silicon (Si)		0.005
Copper + Sum of Named Elements	99
Phosphorous shall be 1.5%, Max for continuous castings		1.5

Specification Properties
(Heat Treat 'F' Denotes As Cast)	Heat Treat State	Minimum
Tensile Strength (ksi)	F	30
Yield Strength (.5% extension under load) (ksi)	F	14
Elongation (2 inch gauge length) (%)	F	15

Typical Properties
	Heat Treat State	Typical
Reduction of Area (%)		20
Proportional Limit (ksi)		8.5
Modulus of Elasticity (ksi)		14500
Hardness (Brinell) (HB @ 500kg)		67
Machinability (% of free cutting brass)		70
Fatigue Strength (10^8 cycles) (ksi)		16
Impact Strength (Izod) (ft-lb)		6
Compressive Strength (0.100 in. set/in.) (ksi)		46
Melting Range (Liquidus-Solidus)(F)		1570-1790
Coefficient of Thermal Expansion (per F @ 68-400F)		0.000010
Thermal Conductivity (Btu/sq.ft/ft./hr/F @ 68F)		33.6
Specific Heat (Btu/lb/F @ 68F)		0.09
Electrical Conductivity (% IACS @ 68F)		12
Density (lb/cu.in. @ 68F)		0.322
Pouring Temperature (Light Castings) (F)		2000-2250
Pouring Temperature (Heavy Castings) (F)		1900-2050
Patternmakers Shrinkage (in/ft)		7/32
Drossing		Low
Gassing		Medium
Fluidity		Medium
Shrinkage		Low
Casting Yield		High

Comments
Wear Resistance:	Very Good

Applications

Automobile Fittings
Bushings
General Utility Bearings
Guide Rack Pattern

St. Paul Foundry 954 Minnehaha Ave West St. Paul MN 55104 651-488-5567 www.stpaulfoundry.com

St. Paul Foundry
954 Minnehaha Avenue West
Saint Paul, Minnesota 55104
(651) 488-5567 Fax: (651) 488-0908
Sales and Estimating: (651) 312-4734 email

Directions

Alloy Guide Sheet Terms of Use

Use Good Design Principles

1. St. Paul Foundry is providing this information on metal characteristics for informational purposes only. Before making a final decision on alloy selection consider the following and all other appropriate design and specification principles. Please note that this is not an exhaustive list.

2. Consult the appropriate specification from an accredited specifying body (ASTM, SAE, Federal or Military) to determine current minimum values of this alloy.

3. Use appropriate design safety factors.

4. Use Failure Modes and Effects Analysis to help identify possible weaknesses in designs and specifications.

5. Use computerized stress analysis tools.

6. Use appropriate certification requirements for your casting suppliers. These may include test bars, chemical certifications, radiography, dye penetrant or other non-destructive testing methods.

7. Test your design to failure in a controlled environment. Then test it to failure in a simulation of its end use.

8. You and you alone are responsible for the suitability of your design and the materials that you select.

Disclaimer

WHILE EVERY EFFORT IS MADE BY ST. PAUL FOUNDRY (SPF) TO ENSURE ACCURACY, THIS INFORMATION IS PROVIDED FOR GENERAL INFORMATION PURPOSES ONLY AND NOT FOR ANY OTHER PURPOSE. BY ACCESSING THIS INFORMATION, YOU AGREE THAT IT MAY BE REVISED AT ANY TIME, IT IS PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, THAT NO WARRANTY OR REPRESENTATION IS MADE ABOUT ITS CONTENT OR SUITABILITY FOR ANY PURPOSE, AND THAT SPF EXPRESSLY DISCLAIMS WARRANTIES OF MERCHANTABILITY AND FITNESS. YOU ASSUME ALL RISK AND LIABILITY FOR ANY LOSS, DAMAGE, CLAIM, OR EXPENSE RESULTING FROM YOUR REVIEW, USE, OR POSSESSION OF THIS INFORMATION.