The GB/T 6739-1996 standard specifies a method for scratching the film with pencils of different Hardness labels to evaluate the Hardness of the film. The Hardness label of the pencil indicates the mar resistance of the film, providing a quantitative method for measuring film Hardness to ensure the abrasion performance of the coating during use.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Abolish | ||
|---|---|---|---|
| CCS | ICS | ||
| Release Date | Implementation Date | ||
