SGCC
SGCC is a typical grade for hot-dip galvanized steel sheets specified in the Japanese Industrial Standard (JIS G3302). It is widely used in industrial manufacturing. Its meaning and characteristics are as follows:
1. Grade Meaning
S: abbreviation for Steel;
G: abbreviation for Galvanized;
C: abbreviation for Commercial, indicating general-purpose use;
A subsequent D indicates deep drawing (e.g., SGCD1, SGCD2, etc.).
Thus, SGCC stands for "General Commercial Hot-Dip Galvanized Steel Sheet" and is one of the most commonly used basic grades for hot-dip galvanized steel sheets.
2. Core Characteristics
Galvanizing Method: Hot-dip galvanizing (immersing the steel sheet in molten zinc creates a uniform zinc-iron alloy layer followed by a pure zinc layer, providing strong corrosion resistance).
Base material: Mild steel (low carbon content, good plasticity, suitable for simple bending and stamping).
Performance:
Corrosion resistance: The zinc layer thickness is typically 60-275g/m² (total weight on both sides), which can be adjusted according to requirements to meet rust-proof requirements in general environments.
Workability: Suitable for general cutting, bending, and welding (be mindful of fumes generated by zinc evaporation during welding), but its deep-drawing performance is inferior to the SGCD series.
3. Main Applications
Due to its versatility and cost-effectiveness, SGCC is widely used in:
Construction: ventilation ducts, light steel keels, guardrails, brackets, etc.
Home appliance manufacturing: refrigerator and washing machine housings or internal components
Automotive: non-load-bearing structural parts (such as fenders and underbody panels);
Industrial accessories: electrical control cabinets, shelving, tool boxes, etc. 4. Correlation with Other Grades
Chinese Standard Corresponding: Similar to DX51D+Z in GB/T 2518 (generally used for hot-dip galvanized steel);
European and American Corresponding: DX51D+Z in EN and A653 series (common grade) in ASTM.
When selecting a grade, further parameters should be determined based on the specific zinc coating thickness and processing requirements (e.g., whether deep drawing is required).