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C92800

Stocked alloy specs

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Reference guide

Stocked size schedules

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Continuous cast

Leaded tin bronze alloys are free cutting and retain favorable thermal conductivity and good lubricity due to the presence of lead. Alloy C93200 is considered this family’s workhorse alloy and is widely used in many bearing applications.

C92800 spec sheet Standard products

C92800

Product description:. Leaded tin bronze
Solids: 1/2" to 13" 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

 *Consult mill for wall thickness

Typical uses

Industrial: Bushings, corrosion-resistant castings, piston rings

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C92800 B505
B505M		   7320      

Chemical composition

Cu%1 Pb% Sn% Zn% Fe% P% Ni%1,2 Al% S% Sb% Si%
Chemical composition according to ASTM B505/B505M-23

1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Cu + sum of named elements, 99.3% min. Single values represent maximums.
78.00-
82.00		 4.00-
6.00		 15.00-
17.00		  
0.80		  
0.20		  
1.50		  
0.80		  
0.005		  
0.05		  
0.25		  
0.005

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C92800 70 0.317

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1751 °F 955 °C
Melting point - solidus 1505 °F 818 °C
Specific heat capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of elasticity in tension 16000 ksi 110000 MPa

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 Excellent
Brazing* Good
Oxyacetylene welding Not recommended
Gas shielded arc welding Not recommended
Coated metal arc welding Not recommended
Machinability rating 70

Thermal properties

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.
Treatment Value* Time**
Stress relief 500  
Solution treatment   0

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