GB/T 18449.4-2009
Metallic materials-Knoop hardness test-Part 4: Tables of hardness values (English Version)

Standard No.

GB/T 18449.4-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

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

Status

Be replaced 2022-10

Replace By

GB/T 18449.4-2022

Latest

GB/T 18449.4-2022

Scope

This part of GB/T 18449 gives the Knoop hardness value calculation table.

GB/T 18449.4-2009 Referenced Document

• GB/T 18449.1 Metallic materials.Knoop hardness test.Part 1:Test method
• GB/T 18449.2 Metallic materials.Knoop hardness test.Part 2:Verification and calibration of testing machines*， 2012-12-31 Update

GB/T 18449.4-2009 history

• 2022 GB/T 18449.4-2022 Metallic materials—Knoop hardness test—Part 4: Tables of hardness values
• 2009 GB/T 18449.4-2009 Metallic materials-Knoop hardness test-Part 4: Tables of hardness values

GB/T 18449.4-2009 -All Parts