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ASTM B438/B438M-00

Historical Revision

Standard Specification for Sintered Bronze Bearings (Oil-Impregnated)

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1.1 This specification covers sintered bronze, oil-impregnated bearings made primarily from elemental copper, tin, and graphite powders. The manufacturer may, at his discretion, use prealloyed bronze powder in the blend.

1.2 This specification covers the following variables:

1.2.1 Grades--Available in three bronze base composition grades identifiable by different graphite contents.

1.2.2 Type--Grades 1 and 2 are available in four types described by specific density ranges.

1.3 Bearings ordered to this specification will normally be sized after sintering and will be impregnated with a lubricating oil unless otherwise specified by print.

1.4 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.


SDO ASTM: ASTM International
Document Number B438
Publication Date Nov. 10, 2000
Language en - English
Page Count 6
Revision Level 00
Supercedes
Committee B09.04
Publish Date Document Id Type View
Nov. 1, 2005 B0438_B0438M-05 Revision
April 1, 2004 B0438_B0438M-04 Revision
Nov. 10, 2000 B0438_B0438M-95AE01 Revision
Nov. 10, 2000 B0438_B0438M-00A Revision
Nov. 10, 2000 B0438_B0438M-00 Revision