Brass Copper Castings India
C94500 High Leaded Tin Bronze


Copper Alloy No. C94500
High Leaded Tin Bronze CDA 945
Chemical Composition % by weight
Element Nominal Minimum Maximum
Aluminum - - .005
Antimony - - .8
Copper 74 Remainder
Iron - - .15
Lead 20 16 22
Nickel - - 1
Phosphorus - - .05
Silicon - - .005
Sulfur - - .08
Tin 7 6 8
Zinc - - 1.2

Applications

Locomotive wearing parts, high load low speed bearings

Mechanical Properties

M07 - As Continuous Cast

Hardness* Brinell Hardness (500 kg load) 50
Tensile Strength** KSI 25
Yield Strength ** KSI (0.5% Ext. under load) 12
Elongation** % in 2 inch 15

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

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 30
Specific Heat BTU/lb/ºF @ 68F .09
Thermal Expansion Per °F from 68 F to 392 F .0000103
Density lb/cu in @ 68 F .340
Electrical Conductivity* (Annealed) % IACS @ 68 F 10
Modulus of Elasticity KSI 10,500

*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) 80
Suitability for being joined by: Soldering/Good
Brazing/Poor*
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Not Recommended
Coated Metal Arc Welding/Not Recommended