C90800

Reference
guide

Continuous cast • GreenAlloys™

Tin bronze alloys such as C90800 are typically found in gear and high-strength bushing and bearing applications where high strength, low speeds, and heavy loads are present. Other high-strength applications for these alloys are pump impellers, piston rings, steam fittings, and valve bodies. C908 tin bronze castings are utilized in movable bridge components, turntables for bridges, and other structures for fixed and expansion bearings with slow or intermittent movement and heavy loads.

C90800

Product description: Tin bronze
Solids: 1" to 6" O.D.
Tubes: 1" to 6" 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
Compliance: C90800 is compliant with key legislation including (1) Federal Safe Drinking Water Act - SDWA, (2) S. 3874 Federal Reduction of Lead in Drinking Water Act, (3) California AB1953, and (4) Vermont Act 193

 *Consult mill for wall thickness

Typical uses

Industrial: speed reducers, worm gears

Chemical composition

Cu%1 Pb% Sn% Zn% Fe% P%2 Ni%3 Al% S% Sb% Si%
Chemical composition provided by CDA

1In determining Cu min., Cu may be calculated as Cu + Ni.  2For continuous castings, P shall be 1.5% max.  3Ni value includes Co.
Note: Cu + sum of named elements, 99.4% min. Single values represent maximums.
85.00-
89.00
 
0.25
11.00-
13.00
 
0.25
 
0.15
 
0.30
 
0.50
 
0.005
 
0.05
 
0.20
 
0.005

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C90800   0.317

Mechanical properties

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 17 117 10 65
 

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