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.
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
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
|C93700||B505 B505M||65 J461 J462||QQ-C-390, E10||MIL-B-11553, Comp 23||Bearing Bronze; 80-10-10 Bronze|
Chemical Composition according to ASTM B505/B505M-18
¹Fe shall be 0.35% max., when used for steel-backed bearings. ²Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
|Copper Alloy UNS No.||Machinability Rating||Density (lb / in³ at 68°F)|
|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|
|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|
|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 68-572||10.3 · 10-6 per °F (68-212 °F)||17.8 · 10-6 per °C (20-100 °C)|
|Specific Heat Capacity||0.09 Btu/lb/°F at 68 °F||377.1 J/kg at 20 °C|
|Modulus of Elastic in Tension||11000 ksi||75800 MPa|
|Gas Shielded Arc Welding||Fair|
|Coated Metal Arc Welding||Fair|
Fabrication Properties provided by CDA
*Since brazing is performed withing the hot-short range, strain must be avoided during brazing and cooling.
Thermal Properties provided by CDA
*Temperature is measured in Fahrenheit. **For Stress Relief, Solution Treatment and Annealing - Time is measured in hours/inch of thickness. For Precipitation Heat Treatment - Time is measured in hours.