C94300

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SPECIFICATION CROSS-REFERENCE CHART

Cast

The lead content in these alloys is between 7 percent and 30 percent. High-leaded tin bronzes are free cutting and retain favorable thermal conductivity and good lubricity due to the lead content. The high-leaded tin bronzes are ideal for bearing applications where there could be a loss of the lubrication boundary. These alloys perform excellent in unforgiving environments where foreign matter may be present, such as dirt and other foreign materials. The high-leaded alloys are able to envelope foreign matter due to their malleable nature and, in doing so, protect the wear surface of a mating part such as a shaft.

Info

Product Description: High-Leaded Tin Bronze
Solids: 1/2" to 10" O.D.
Tubes: 1" to 16" O.D.
Rectangles: Up to 10"
Standard Lengths: 144"
Shape/Form: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar

Typical Uses

Industrial: high speed bearings for light loads, soft bushings, soft metal applications, railroad applications, high-speed/light-to-medium-pressure bushings

Similar or Equivalent Specification

CDA ASTM Asarcon SAE AMS Federal Military Other
C94300 B505
B505M
520     QQ-C-390, E1; QQ-B-1005, COMP 18 MIL-B-16261, Grade V Soft Bronze

Chemical Composition (according to ASTM B505/B505M-14)

Cu% Pb% Sn% Zn% Fe% P%1 Ni%2 Al% S%3 Sb% Si%
Chemical Composition according to ASTM B505/B505M-18

1For continuous castings, P shall be 1.5% max.   2Ni value includes Co.   3For continuous castings, S shall be 0.25% max.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
67.00-
72.00
23.00-
27.00
4.50-
6.00
 
0.80
 
0.15
 
1.50
 
1.00
 
0.005
 
0.25
 
0.80
 
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68 °F)
C94300 80 0.336

Mechanical Properties

Mechanical Properties according to ASTM B505/B505M-18
Tensile Strength, min Yield Strength, at 0.5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Brinell Hardness (500 kg load) Remarks
ksi MPa ksi MPa % typical BHN  
21 145 15 103 7 45  

Physical Properties

Physical Properties provided by CDA
  US Customary Metric
Density 0.336 lb/in3 at 68 °F 9.3 gm/cm3 at 20 °C
Specific Gravity 9.3 9.3
Electrical Conductivity 9% IACS at 68 °F 0.053 MegaSiemens/cm at 20 °C
Thermal Conductivity 36.2 Btu · ft/(hr · ft2 · °F) at 68 °F 62.7 W/m at 20 °C
Specific Heat Capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 293 °C
Modulus of Elasticity in Tension 10500 ksi 72400 MPa
Incipient Melting 600 °F 316 °C
Magnetic Permeability 1 1

Fabrication Properties

Fabrication Properties provided by CDA

*Since brazing is performed within the hot-short range, strain must be avoided during brazing and cooling.
Technique Suitability
Soldering Good
Brazing* Poor
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Machinability Rating 80

Thermal Properties

Thermal Properties provided by CDA

*Temperature is measured in Fahrenheit.   **Time is measured in minutes.
Treatment Value* Time**
Stress Relief 500  
Solution Treatment   0

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