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Rockwell Hardness Testing Reference Guide

ASTM E18 contains a listing of all regular Rockwell scales and typical materials for which these scales are applicable. Use these tables in selecting the scale that is appropriate for your application.

Rockwell Hardness Testing Reference Guide




Regular Rockwell Testing

In this test method, the minor (preload) is always 10 kgf. The major load may be any of the following loads: 60 kgf, 100 kgf, or 150 kgf.

Rockwell Hardness Testing Reference Guide - Regular Rockwell Testing




Superficial Rockwell Testing

In this test method, the minor (preload) is always 3 kgf. The major load may be any of the following loads: 15kgf, 30 kgf, or 45 kgf.

Rockwell Hardness Testing Reference Guide - Superficial Rockwell Testing