ASTM B939-21

Действует

Standard Test Method for Radial Crushing Strength, <emph type="bdit">K</emph>, of Powder Metallurgy (PM) Bearings and Structural Materials — 4 стр.

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Standard Test Method for Radial Crushing Strength, <emph type="bdit">K</emph>, of Powder Metallurgy (PM) Bearings and Structural Materials — 4 стр.

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