GB/T 6739-1996
Determination of film hardness by pencil test (English Version)

Standard No.

GB/T 6739-1996

Language

Chinese, Available in English version

Release Date

1996

Published By

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

Status

Be replaced 2007-06

Replace By

GB/T 6739-2006

Latest

GB/T 6739-2022

Scope

This standard specifies the method for measuring the hardness of the coating film by scratching the coating film with a pencil of known hardness number. This standard specifies two methods, method A and method B. Method A uses the testing machine method, and method B uses the manual method. This standard applies to the determination of coating film hardness.

GB/T 6739-1996 history

• 2022 GB/T 6739-2022 Paints and varnishes—Determination of film hardness by pencil test
• 2006 GB/T 6739-2006 Paints and varnishes-Determination of film hardness by pencil test
• 1987 GB/T 6739-1986 Coating film hardness pencil test method