GB/T 2596-1981
Abolished
GB/T 227-1991
Replaced
National standards
GB/T 227-1991 Tool steel—method of hardenability test
GB/T 227-1991 Tool steel—method of hardenability test
Basic Information
Standard Code:
GB/T 227-1991
Standard Type:
National standards
Standard Status:
Replaced
is_force_gb:
no
CCS Name:
Metallographic examination methods
ICS Name:
Chemical analysis of metal materials
Publish Date:
1991-12-13
Implement Date:
1992-10-01
Publisher:
The National Technical Supervision Bureau
Pages:
8 pages
Development Information
Drafting Units:
Shougang Special Steel Company and the General Research Institute of Metallurgy of the Ministry of Metallurgy
Drafting Persons:
Zhang Shaojun, Lin Shuxiang, Zhang Ran, Jiang Yiwen, Ye Hongren, and Hu Rui
Replace the following standards
GB 227-1963
Superseded by the following standards
Adopt standards
NF A04-302-1985
Related Standards
GB/T 3249-1982
Replaced
GB/T 3249-1982 Standard method for determination of particle size of powders of refractory metals and compounds—Fisher method
GB/T 3488-1983
Replaced
GB/T 3488-1983 Hardmetals—metallographic determination of microstructure
GB/T 3489-1983
Replaced
GB/T 3489-1983 Hardmetals—Metallographic determination of porosity and uncombined carbon
GB/T 3651-1983
Replaced
GB/T 3651-1983 Measuring method for thermal conductivity of metal at high temperature
GB/T 4059-1983
Replaced