GB/T 4340.4-2009

Abolished

Metallic materials - Vickers hardness test - Part 4: Tables of hardness values

金属材料维氏硬度试验第4部分：硬度值表

Standard Type

GBT

ICS

77.040.10

CCS

H22

Status

Abolished

Issue Date

2009-06-25

Implementation

2010-04-01

Centralized Committee

中国钢铁工业协会

Issuing Authority

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

Application Summary AI generated

GB/T 4340.4-2009 provides pre-calculated tables of Vickers hardness values for metallic materials, eliminating the need for manual calculation during testing. It is applied in metallurgical laboratories and quality control departments to directly convert diagonal length measurements into hardness numbers according to standard test forces. This standard ensures consistency and accuracy in hardness reporting for metals used in manufacturing, construction, and engineering components.

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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.