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*ALLOY 903 TIN BRONZE

COMMON FABRICATION PROCESSES AND TYPICAL USES


CHEMICAL COMPOSITION
 
Cu Al Sb Fe Pb Ni P Si S Sn Zn
Min/Max 86.0-89.0 0.005 0.2 0.2 0.3 1 0.05 0.005 0.05 7.5-9.0 3.0-5.0
Nominal 87.5                 8.3 4
 
COMMON FABRICATION PROCESSES FOR 903 TIN BRONZE

Casting
 
FABRICATION PROPERTIES
 
Joining Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Spot Weld n/a
Seam Weld n/a
Butt Weld n/a
Capacity for Being Cold Worked n/a
Capacity for Being Hot Formed n/a
Machinability Rating: 30  
 
Product Forms
Sand Cast Rod
Sand Cast Tube
     
Casting Characteristics  
Attribute Level
Casting Yield Medium
Drossing Low
Effect of Section Size Large
Fluidity Medium
Gassing Medium
Patternmakers Shrinkage '3/16
Shrinkage Medium
   
 

TYPICAL USES OF 903 TIN BRONZE

Building
Heavy construction equipment
Fasteners
Swivel
 Industrial
Pump impellers, piston rings, valve bodies, valves, gears, bushings, bearings, pump bodies, gear blanks
Plumbing
Steam fittings

 
 
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Hayward, CA 94545

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