Description
JIS G3302 Hot-Dip Zinc-Coated Steel Sheets
JIS G3302 is a Japanese Industrial Standard that specifies requirements for hot-dip zinc-coated steel sheets and strips (commonly referred to as galvanized steel). This standard applies to steel sheets, strips, and corrugated sheets that are coated with zinc through a hot-dip galvanizing process, where the steel is submerged in a bath of molten zinc containing at least 97% zinc (typically with less than 0.30% aluminum). The zinc coating provides excellent corrosion resistance, making these materials suitable for various applications.
Key Features
- Excellent corrosion resistance
- Good weldability and formability
- Available in skin-passed or non-skin-passed finish
- Can be chromated, oiled, or dry surface treated
Grades under JIS G3302
| Grade | Application | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|---|
| SGCC | General forming | ≥270 | – | ≥22 |
| SGCD1 | Drawing | ≥270 | – | ≥28 |
| SGCD2 | Deep Drawing | ≥270 | – | ≥31 |
| SGCD3 | Extra Deep Drawing | ≥270 | – | ≥34 |
Chemical Composition
| Grade | C (max%) | Mn (max%) | P (max%) | S (max%) |
|---|---|---|---|---|
| SGCC | 0.15 | 0.80 | 0.05 | 0.05 |
| SGCD1 | 0.12 | 0.50 | 0.04 | 0.04 |
| SGCD2 | 0.10 | 0.45 | 0.03 | 0.03 |
| SGCD3 | 0.08 | 0.40 | 0.03 | 0.03 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) (≥0.6 mm) |
|---|---|---|---|
| SGCC | – | ≥270 | ≥22 |
| SGCD1 | – | ≥270 | ≥28 |
| SGCD2 | – | ≥270 | ≥31 |
| SGCD3 | – | ≥270 | ≥34 |
JIS G3302 Equivalent
- Chinese Standard: GBT 2518-2008
- European Standard: EN 10346-2009
- American Standard: ASTM A653
Application
- Automotive
- Construction
- Electrical Appliances
- Industrial Uses
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