GB/T 40389-2021 is a standard for sintered metal materials (except cemented carbide). It specifies the measurement method of surface roughness of such materials. In the production and application of sintered metal materials, surface roughness has a significant impact on product performance, such as affecting the bonding and friction between materials. This standard provides a unified specification for the accurate determination of surface roughness, and provides reliable technical support for manufacturers to control product mass, scientific researchers to conduct relevant research, and users to evaluate material suitability.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | H70 | ICS | 77.160 |
| Release Date | 2021-08-20 00:00:00 | Implementation Date | 2022-03-01 00:00:00 |
