Brass Copper Castings India
C93400 High Leaded Tin Bronze


Copper Alloy No. C93400
High Leaded Tin Bronze CDA 934 ASTM B 505
Chemical Composition % by weight
Element Nominal Minimum Maximum
Aluminum - - .005
Antimony - - .50
Copper 84 82 85
Iron - - .15
Lead 8 7 9
Nickel - - 1
Phosphorus - - .50
Silicon - - .005
Sulfur - - .08
Tin 8 7 9
Zinc - - .8

Applications

Bearings and bushings 

Mechanical Properties

M07 - As Continuous Cast

Hardness* Brinell Hardness (500 kg load) 60
Tensile Strength** KSI 34 min
Yield Strength ** KSI (0.5% Ext. under load) 20 min
Elongation** % in 2 inch 8 min

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 33.6
Specific Heat BTU/lb/ºF @ 68F .09
Thermal Expansion Per °F from 68 F to 392 F .000010
Density lb/cu in @ 68 F .320
Electrical Conductivity* (Annealed) % IACS @ 68 F 12
Modulus of Elasticity KSI 11,000

*Volume basis

Fabrication Practices

Stress relieving temperature 500 F or 260 C
Time at temperature 1 hour per inch of section thickness
Responds to heat treatment No
Machinability rating (Free Cutting Brass=100) 70
Suitability for being joined by: Soldering/Good
Brazing/Good*
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Not Recommended
Coated Metal Arc Welding/Not Recommended