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Alloy Specifications, Chemistries, and Technical Data

C93400 LEADED RED BRASS
Aliases
CDA NUMBER C93400
Common Name 84-8-8-0
Alias 311
Alias C934
Alias 934
Specification Composition
Minimum Maximum
Copper (Cu) 82 85
Tin (Sn) 7 9
Lead (Pb) 7 9
Zinc (Zn) 0.8
Iron (Fe) 0.2
Antimony (Sb) 0.5
Nickel (Ni) 1
Sulphur (S) 0.08
Phosphorous (P) 0.5
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 25
Elongation (2 inch gauge length) (%) F 8
Typical Properties
Heat Treat State Typical
Proportional Limit (ksi) 8
Modulus of Elasticity (ksi) 11000
Hardness (Brinell) (HB @ 500kg) 60
Machinability (% of free cutting brass) 70
Fatigue Strength (10^8 cycles) (ksi) 15
Impact Strength (Izod) (ft-lb) 5
Compressive Strength (0.100 in. set/in.) (ksi) 48
Melting Range (Liquidus-Solidus)(F) F
Coefficient of Thermal Expansion (per F @ 68-400F) .000010
Thermal Conductivity (Btu/sq.ft/ft./hr/F @ 68F) 33.6
Specific Heat (Btu/lb/F @ 68F) .09
Electrical Conductivity (% IACS @ 68F) 12
Density (lb/cu.in. @ 68F) .320
Patternmakers Shrinkage (in/ft) 3/16
Drossing Low
Gassing Medium
Fluidity High
Shrinkage Low
Casting Yield High
Applications
Casing Ring
Impeller
Swing Bolts
Valve Guard
Wearing Ring
Great Castings
         St. Paul Foundry 954 Minnehaha Ave West St. Paul MN 55104 651-488-5567 www.stpaulfoundry.com
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St. Paul Foundry
954 Minnehaha Avenue West
Saint Paul, Minnesota 55104
(651) 488-5567  Fax: (651) 488-0908
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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.