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C91000

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Continuous Cast • GreenAlloys™

Tin bronze alloys such as C91000 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. C910 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.

C91000 SPEC SHEET CONCAST LINE CARD

C91000

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: C91000 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

Typical Uses

Industrial: bearings, piston rings

Similar or Equivalent Specification

CDA ASTM SAE AMS Federal Military Other
C91000 B505
B505M		     QQ-C-390, D2;
QQ-B-1005, Comp 9		 MIL-B-16262, Grade III  

Chemical Composition

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

1In determining Cu min., Cu may be calculated as Cu + Ni.    2Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.4% min. Single values represent maximums.
84.00-
86.00		  
0.20		 14.00-
16.00		  
1.50		  
0.10		  
0.05		  
0.80		  
0.005		  
0.05		  
0.20		  
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68 °F)
C91000 20 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  
30 207       105  
Mechanical Properties according to ASTM B505/B505M-18

Physical Properties

Physical Properties provided by CDA
  US Customary Metric
Melting Point - Liquidus 1760 °F 960 °C
Melting Point - Solidus 1505 °F 818 °C
Electrical Conductivity 9% IACS at 68 °F 0.054 MegaSiemens/cm at 20 °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 Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Machinability Rating 20

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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