GB/T 3879-1983
Replaced
YS/T 552-2020
Active
Industry standards-Non-ferrous metals
YS/T 552-2020 Carbide rotating file blanks
YS/T 552-2020 Carbide rotating file blanks
Basic Information
Standard Code:
YS/T 552-2020
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Powder metallurgy materials and products
ICS Name:
Powder metallurgy
Publish Date:
2020-12-09
Implement Date:
2021-04-01
Scope
This standard applies to the rough parts of carbide rotary files used in mechanized tools.
Development Information
Replace the following standards
Related Standards
GB/T 4309-1984
Replaced
GB/T 4309-1984 Classification and designation for powder metallurgy materials
GB/T 5124.1-1985
Replaced
GB/T 5124.1-1985 Methods for chemical analysis of hardmetals—The gravimetric method for the determination of total carbon content
GB/T 5124.2-1985
Replaced
GB/T 5124.2-1985 Methods for chemical analysis of hardmetals—The gravimetric method for the determination of free(insoluble) carbon content
GB/T 5124.3-1985
Replaced
GB/T 5124.3-1985 Methods for chemical analysis of hardmetals—The potentiometric method for the determination of cobalt content
GB/T 5124.4-1985
Replaced