ASTM-B439 › Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
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1.1 This specification covers sintered metal powder, oil-impregnated, bearings of four iron-base compositional grades:
Grades 1 and 2--iron-carbon
Grades 3 and 4--iron-copper
1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.
density; iron-base bearings; K strength constant; oil content; oil impregnated; porosity
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May 4, 2021