C93700

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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 20"
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

Builders Hardware: brackets
Fasteners: nuts, washers for engines
Industrial: applications requiring acid resistance to sulphite fluids, bearing plates, bearings, bushings, bushings for high speed and heavy pressure, corrosion-resistant castings, crank shafts, high speed/heavy load bearings, impellers, machine parts, parts for steel mill maintenance, pressure-tight castings, pumps, slide guides for steel mills
Marine: large bearings for ships

Similar or Equivalent Specification

CDA ASTM Asarcon SAE AMS Federal Military Other Desc
C93700 B505
B505M
1010 J461
J462
  QQ-C-390, E10 MIL-B-11553, Comp 23 Bearing Bronze
80-10-10 Bronze

Chemical Composition

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

1Fe shall be .35% max., when used for steel-backed bearings.   2For continuous castings, P shall be 1.5%, max.   3Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
78.00-
82.00
8.00-
11.00
9.00-
11.00
 
0.80
 
0.70
 
1.50
 
0.50
 
0.005
 
0.08
 
0.50
 
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68 °F)
C93700 80 0.32

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  
35 241 20 138 6 60  

Physical Properties

Physical Properties provided by CDA
  US Customary Metric
Melting Point - Liquidus 1705 °F 929 °C
Melting Point - Solidus 1403 °F 762 °C
Density 0.32 lb/in3 at 68 °F 8.86 gm/cm3 at 20 °C
Specific Gravity 8.86 8.86
Electrical Conductivity 10% IACS at 68 °F 0.059 MegaSiemens/cm at 20 °C
Thermal Conductivity 27.1 Btu/sq ft/ft hr/°F at 68 °F 46.9 W/m at 20 °C
Coefficient of Thermal Expansion 68-392 10.3 · 10-6 per °F (68°-392 °F) 17.8 · 10-6 per °C (20°-200 °C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of Elasticity in Tension 11000 ksi 75800 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* Good
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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