C90700
Continuous cast GreenAlloys™
Product Tin bronze Typical uses
description
Industrial
Solids 1/2" to 10" O.D. Bearings, bearings for
heavy loads and relatively
1" to 16" O.D. low speeds, gear boxes,
Tubes
gears, restaurant equip-
ment, speed reducers,
Rectangles Up to 20" valve bodies, worm gears,
worm wheels
Standard 144"
lengths
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
Similiar or equivalent specification
CDA ASTM SAE AMS Federal Military Other
65
B505
C90700 J461 Tin bronze, 65
B505M
J462
Chemical composition
Cu (%)1 Pb (%) Sn (%) Zn (%) Fe (%) P (%) Ni (%)1,2 Al (%) S (%) Sb (%) Si (%)
88.00-90.00 0.50 10.00-12.00 0.50 0.15 1.50 0.50 0.005 0.05 0.20 0.005
Chemical composition according to ASTM B505/B505M-23
In determining Cu min., Cu may be calculated as Cu + Ni.
1 2
Ni value includes Co.
Note: Cu + sum of named elements, 99.4% min. Single values represent maximums.
Machinability
Copper alloy UNS no. Machinability rating Density (lb/in3 at 68˚F)
C90700 20 0.317
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C90700 continued
Mechanical properties
Yield strength, at 0.5% Elongation, in 2 in. Brinell hardness
Tensile strength, min extension under load, min or 50 mm, min (500 kg load) Remarks
ksi MPa ksi MPa % typical BHN
40 276 25 172 10 102
Mechanical properties according to ASTM B505/B505M-23
Physical properties
US customary Metric
Melting point – liquidus 1830˚F 999˚C
Melting point – solidus 1528˚F 831˚C
Density 0.317 lb/in3 at 68˚F 8.77 gm/cm3 at 20˚C
Specific gravity 8.77 8.77
Electrical conductivity 10% IACS at 68˚F 0.056 MegaSiemens/cm at 20˚C
Thermal conductivity 40.8 Btu/sq ft/ft hr/˚F at 68˚F 70.6 W/m at 20˚C
Coefficient of thermal expansion 68-392 10.2 · 10-6 per˚F (68-392˚F) 18.4 · 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
Modulas of elasticity in tension 15000 ksi 103400 MPa
Magnetic permeability 1 1
Physical properties provided by CDA
Fabrication properties Casting characteristics
Technique Suitability Casting attribute Level
Soldering Excellent Casting yield Medium
Brazing* Good Drossing Low
Oxyacetylene welding Fair Effect of section size High
Gas shielded arc welding Fair Fluidity High
Coated metal arc welding Fair Gassing Medium-high
Machinability rating 20 Patternmakers shrinkage (inches per foot) 3/16
Shrinkage in solidification Low
Fabrication properties provided by CDA
*Since brazing is performed within the hot-short range, strain must be Casting characteristics provided by CDA
avoided during brazing and cooling.
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