SPCC
SPCC Cold-Rolled Steel Sheet: Grade Interpretation, Performance Parameters, and Applications
SPCC is one of the most basic and widely used grades of cold-rolled steel sheet. Derived from the Japanese Industrial Standard (JIS G 3141), it was later adopted as an equivalent in the Chinese National Standard (GB/T 11253-2022) (corresponding exactly to DC01 in the GB system). It is widely used in manufacturing industries (such as home appliances, hardware, and automotive parts) in many countries and regions around the world. Its core features are low cost, easy processing, and strong versatility, making it suitable for simple processing applications with low formability requirements. I. Core Definition and Classification of SPCC Grades
SPCC grade nomenclature follows the JIS cold-rolled steel designation, with the letter combination directly reflecting its intended use and formability level:
S: Steel, indicating the base material is steel;
P: Plate, indicating the product form is steel plate/strip;
C: Cold, indicating the cold rolling process (as distinct from hot rolling);
C: Commercial, indicating "common grade" performance, suitable for applications without special forming requirements.
3. Surface Quality (Affecting Appearance and Subsequent Processing)
SPCC surface quality is classified as FB (Fair Surface) according to JIS/GB standards. Minor defects that do not affect serviceability are permitted:
Permissible defects: Minor scratches, localized pitting (depth ≤ 10% of the steel plate thickness), and slight oxidized coloration.
Unacceptable defects: Large-scale oxide scale, cracks, peeling, and significant pitting (affecting structural strength or appearance).