GB/T 6885-2020
Hardmetals—Sampling and testing method of mixed powders

Standard No.

GB/T 6885-2020

Language

Chinese

Release Date

2020

Published By

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

Lastest

GB/T 6885-2020

Replace

GB/T 6885-1986

Scope

This standard specifies the mixed powder sampling, test piece preparation and test methods for determining the properties of cemented carbide by sintering test pieces. This standard applies to the sampling and testing methods of cemented carbide mixed powder.

GB/T 6885-2020 Referenced Document

• GB/T 3488 Hardmetals--Metallographic determination of microstructure
• GB/T 3489 Hardmetals.Metallographic determination of porosity and uncombined carbon
• GB/T 3848 Hardmetals—Determination of (the magnetization) coercivity
• GB/T 3849 Hardmetals--Rockwell hardness(scale A) test method
• GB/T 3850 Impermeable sintered metal materials and hardmetals.Determination of density

GB/T 6885-2020 history

• 2020 GB/T 6885-2020 Hardmetals—Sampling and testing method of mixed powders
• 1986 GB/T 6885-1986 Hardmetals--Sampling and testing of mixed powder