GB/T 9451-1988
Replaced
GB/T 38770-2020
Active
National standards
GB/T 38770-2020 Spheroidite examination and grading for low and medium carbon steels
GB/T 38770-2020 Spheroidite examination and grading for low and medium carbon steels
Basic Information
Standard Code:
GB/T 38770-2020
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Heat treatment
ICS Name:
Heat treatment
Publish Date:
2020-04-28
Implement Date:
2020-11-01
Pages:
15 pages
Scope
This standard specifies the microstructure inspection and grading of low-carbon carbon structural steel, low-carbon alloy structural steel, medium-carbon carbon structural steel, and medium-carbon alloy structural steel after spheroidizing annealing. This standard is applicable to the microstructure inspection and grading of low- and medium-carbon structural steel after spheroidizing annealing prior to cold heading, cold extrusion, and other cold forming processes.
Development Information
Referenced Standards
GB/T 7232-1999 Terminology of metal heat treatment
GB/T 7232-2012 Terminology of metal heat treatment
GB/T 7232-2023 Metal heat treatment—Terminology
GB/T 15749-1995 Manual measuring method in quantitative metallography
GB/T 15749-2008 Measuring method in quantitative metallography
GB/T 30067-2013 Standard terminology relating to metallography
GB/T 34895-2017 General rules for metallographic examination of heat treatment
Related Standards
GB/T 12603-1990
Replaced
GB/T 12603-1990 Classification and designation on metal heat treatment
GB/T 13324-1991
Replaced
GB/T 13324-1991 Terminology of heat treatment installation
GB 15735-1995
Replaced
GB 15735-1995 Requirements for the safety and health in production process of metal heat treatment
GB/T 7232-1999
Replaced
GB/T 7232-1999 Terminology of metal heat treatment
GB/T 18177-2000
Replaced