Table of Contents

Introduction
1 Scope
2 Normative references
3 Principle
4 Symbols, abbreviated terms and designations
5 Testing machine
6 Test piece
7 Procedure
8 Uncertainty of the results
9 Test report
10 Conversions to other hardness scales or
tensile strength values
Annex A (normative) - Special HR30Tm and HR15Tm
test for thin products
Annex B (normative) - Minimum thickness of the test
piece in relation to the Rockwell hardness
Annex C (normative) - Corrections to be added to
Rockwell hardness values obtained on convex
cylindrical surfaces
Annex D (normative) - Corrections to be added to
Rockwell hardness C scale values obtained on
spherical test surfaces of various diameters
Annex E (normative) - Daily verification procedure
Annex F (normative) - Inspection of diamond indenters
Annex G (informative) - Uncertainty of the measured
hardness values
Annex H (informative) - CCM-Working Group on Hardness
Annex I (informative) - Rockwell hardness measurement
traceability
Annex JA (informative) - Comparison table between
JIS and corresponding International Standard

Abstract

Defines the method for Rockwell and Rockwell superficial hardness tests for metallic materials.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Japanese Standards Association
Pages
ISBN
Supersedes	JIS Z 2245:2011