This document specifies the designations and unified digital codes of stainless steel and their chemical composition. It also provides the physical properties of some designations, and a comparison table of designations and unified digital codes with foreign standard designations (or similar designations). The stainless steel designations, unified numerical codes and chemical compositions specified in this document are applicable to guiding the formulation and revision of stainless steel (including ingots and semi-finished products) product standards. NOTE. In this document, the content of each element representing the chemical composition of stainless steel is expressed in mass fraction.
Basic Data
Standard ID
GB/T 20878-2024 (GB/T20878-2024)
Description (Translated English)
Stainless steels - Designation and chemical composition
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
H40
Classification of International Standard
77.140.20
Word Count Estimation
66,611
Date of Issue
2024-07-24
Date of Implementation
2025-02-01
Older Standard (superseded by this standard)
GB/T 20878-2007
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
