Standard Test Method for Radial Crushing Strength, K, of Powder Metallurgy (PM) Bearings and Structural Materials

Importancia y uso:

5.1 The radial crushing strength test is a destructive procedure used to determine a material strength characteristic of PM bearings and hollow cylindrical test specimens. These data can be used to grade, classify, and evaluate the materials.

5.2 The PM bearing Specifications B438 and B439 require the use of this test method as an acceptance test for the strength of oil-impregnated sintered bearings.

5.3 This test method may be used by powder producers and parts manufacturers as a lot acceptance test for metal powders and lubricated powder mixtures intended for the production of porous parts.

5.4 Companies in the PM industry use this test as a manufacturing control test because it is appropriate for production practices.

5.5 Radial crushing strength is a property of the PM material but is not a design value. However, experience has shown that the radial crushing strength of a material is approximately twice the ultimate tensile strength.

Subcomité:

B09.04

Referida por:

B0439-25, B0925-15R22, B0438-25

Volúmen:

02.05

Número ICS:

77.160 (Powder metallurgy)

Palabras clave:

K; material strength; PM bearings; radial crushing strength;