International Standard ISO 6508-1:2015(E) 
Metallic materials — Rockwell hardness test —
Part 1:
Test method
ISO 6508 consists of the following parts under the general title Metallic materials —— Rockwell hardness test:
ISO 6508-1 Metallic materials —— Rockwell hardness test Part 1: Test method
ISO 6508-2 Metallic materials —— Rockwell hardness test Part 2: Verification and calibration of testing machines and indenters
ISO 6508-3 Metallic materials —— Rockwell hardness test Part 3: Calibration of refernce blocks
Content
Foreword
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 HR30TSm and HR15TSm 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
Bibliography
1 Scope
This part of ISO 6508 specifies the method for Rockwell regular and Rockwell superficial hardness tests
(scales and applicable range of application according to Table 1) for metallic materials and is applicable
to stationary and portable hardness testing machines.
For specific materials and/or products, other specific International Standards apply (for instance,
ISO 3738-1 and ISO 4498).
NOTE Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is
considered to be the standard type of Rockwell indenter ball. Steel indenter balls are allowed to continue
to be used only when complying with Annex A.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 6508-2:2015，Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of
testing machines
ISO 6508-3:2015，Metallic materials — Rockwell hardness test — Part 3: Calibration of reference blocks
相關標準
國家標準GB/T 230.1-2018《金屬材料 洛氏硬度試驗 第1部分：試驗方法》
本標準修改采用國際標準ISO6508-1:2005《金屬材料 洛氏硬度試驗 第1部分:試驗方法(A、B、C、D、E、F、G、H、K、N、T 標尺)》(英文版)。
本標準根據(jù)ISO6508-1:2005重新起草,根據(jù)我國的實際情況,本標準在采用國際標準時進行了修改和補充。這些技術性差異用垂直單線標識在它們所涉及的條款的頁邊空白處。
本標準結構和技術內(nèi)容與ISO6508-1:2005基本一致,根據(jù)我國情況在以下幾方面進行了修改:
—— 刪去了國際標準的前言;
—— 刪除了引言;
—— 本國際標準一詞改為本標準;
—— 用小數(shù)點.代替作為小數(shù)點的,;
—— 增加了對試樣表面粗糙度的建議;
—— 增加了試驗結果有效位數(shù)的規(guī)定;
—— 修改了附錄G 洛氏硬度測量值的不確定度分析方法。
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