Bunting Bearings, LLC
Bunting Bearings, LLC
1001 Holland Park Blvd.
Holland, OH 43528
Phone: 419.866.7000
Fax: 419.866.0653
E-Mail: bunting@buntingbearings.com
Website: www.buntingbearings.com
Print Back
C90300 is a “GREEN” non-leaded alloy
Tin Bronze – Navy G QQC-390B Type II and Type III
CDA 903 SAE 620 88-8-0-4 ASTM B271

Solid bars are stocked 13" increments and 105" lengths, and are available in other lengths and nonstandard 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: 86.00 – 89.00%
Tin: 7.50 – 9.00%
Lead: 0.30% max.
Zinc: 3.00 – 5.00%

Physical Properties: Centrifugal Cast
Tensile Strength PSI: 40,000 min
Yield Strength PSI: 18,000 min.
Elongation: 20% min.
Brinell Hardness (500 kg load): 70 typical
Machinability Rating: 30
Minimum Operating Temperature: -450°F
Maximum Operating Temperature: 550°F

C90300 is used for bearings, seal rings, gears, piston rings, pump impellers, steam fittings, and valve components. C90300 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.

WARNING: This product can expose you to chemicals including Nickel, Lead & Tetrafluoroethylene which is known to the state of California to cause cancer. Lead and Nickel which are known to the state of California to cause birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Unit of Measure

Specifications

Stock Item?1 N/A Yes

Nominal Size I.D.

 N/A 5 in

Nominal Size O.D.

 N/A 12 1/2 in

I.D. Min

 N/A 4.8600 in

I.D. Max

 N/A 4.8900 in

O.D. Min

 N/A 12.6100 in

O.D. Max

 N/A 12.6400 in

Min. Temperature

 N/A -450 ºF

Max. Temperature

 N/A 550 ºF

P Value (Max.)

 N/A 5000

V Value (Max.)

 N/A 250

PV Value (Max.)

 N/A 90000
  • 1 Minimum quantities may apply to non-stock items, please contact customer service for more information.