JJG 2025-1989 Active National Metrology and Inspection Regulations JJG

JJG 2025-1989 Measuring Instruments for Microhardness

Publish Date: 1989-09-11 Implement Date: 1990-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: JJG 2025-1989

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 1989-09-11

Implement Date: 1990-07-01

Publisher: The National Technical Supervision Bureau

Pages: 5 pages

Scope

This verification system table is suitable for the verification of microhardness (Vickers) hardness measuring instruments with a test force of 0.4903 to 9.8067 N (0.05 to 1 kgf). It specifies the use of the national reference standard for microhardness units, a complete set of basic measuring instruments included in the reference standard, the metrological parameters of the reference standard, and the procedure for transferring the microhardness unit values to working measuring instruments with the help of working references and standards. It also specifies their uncertainties and basic verification methods, etc.