GB/T 18449.3-2012
Metallic materials.Knoop hardness test.Part 3:Calibration of reference blocks (English Version)

Standard No.

GB/T 18449.3-2012

Language

Chinese, Available in English version

Release Date

2012

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 18449.3-2012

Replace

GB/T 18449.3-2001

Scope

This part of GB/T 18449 specifies the calibration method of the standard hardness block (hereinafter referred to as the standard block) for the indirect inspection of the Knoop hardness tester described in GB/T 18449.2-2012. This section is only applicable to indentations whose long diagonal length is not less than 0.02mm.

GB/T 18449.3-2012 Referenced Document

• GB/T 13634 Metallic materials—Calibration of force-proving instruments used for the verification of uniaxial testing machines*， 2019-10-18 Update
• GB/T 18449.1-2009 Metallic materials.Knoop hardness test.Part 1:Test method
• GB/T 3505-2009 Geometrical Product Specifications(GPS).Surface texture:Profile method.Terms,definitions and surface texture parameters

GB/T 18449.3-2012 history

• 2012 GB/T 18449.3-2012 Metallic materials.Knoop hardness test.Part 3:Calibration of reference blocks
• 2001 GB/T 18449.3-2001 Metallic knoop hardness test--Part 3: Calibration of hardness reference blocks

GB/T 18449.3-2012 -All Parts