C90700 is a “GREEN” non-leaded alloy Tin Bronze CDA 907 SAE 65 89-11 ASTM B271
Solid bars are stocked in 13" increments and 105" lengths, and are available in other lengths and non-standard sizes. Consider bars for use when you need special bearings, bearings for prototypes, or for emergency repairs.
Centrifugal cast large diameter cored bars are also available in 13" lengths as well as made to order sizes and lengths.
Typical Properties: (Not to be used for specification purposes.) Copper: 88.00 – 90.00% Tin: 10.00 – 12.00% Lead: 0.50% max. Zinc: 0.50% max. Physical Properties: Centrifugal Cast Tensile Strength PSI: 50,000 min. Yield Strength PSI: 28,000 min. Elongation: 12% min. Brinell Hardness (500 kg load): 100 typical Machinability Rating: 20 Minimum Operating Temperature: -450°F Maximum Operating Temperature: 550°F
C90700 is used for bearings and gears where higher strength and load-carrying ability is required. C90700 has good wear resistance but should be used with hardened steel shafts (300-400 HB). Due to the lack of lead, this material requires constant lubrication, generally grease.
