Chemical Composition | C | Si | Mn | P | S |
0.04-0.06% | 0.01-0.03% | 0.18-0.22% | 0.014-0.016% | 0.006%-0.009% | |
Yield Strength | (Mpa) 280-320 | ||||
Tensile Strength | (Mpa) 340-390 | ||||
Elongation | 20%-30% | ||||
Out-of-square | not exceed 1% Flatness | ||||
Bow | 15mmmax | ||||
Edge Wave | 9mmmax | ||||
Centre Buckle | 8mmmax | ||||
Bending At 180 Degree | No crack, purling and fraction | ||||
Thickness | Soft | 0.25mm-2.5mm |
Hard | 0.14mm-1.00mm | |
Width | Asclient's request | |
ZincCoating | 40-275 g/m2 on both sides (to the customers'demand, the zinc coverage could be up to 275 g/m2, depending by the requested specification); | |
CoilID | 508mm/610mm | |
CoilWeight (Thickness) | 0.25mm | 2.0-6.0T |
0.251-0.50mm | 2.0-10.0T | |
0.501-2.50mm | 2.0-22.0T | |
Spangle | RegularSpangle | Formedwithout any additional treatment during galvanizing |
MinimizedSpangle | Reducingthe lead content in the zinc liquid or Blowing the zinc powder from theequipment installed on the zinc pot. | |
ZeroSpangle | Furtherskin-passed | |
EdgeCondition | Trimmed/MillEdge | |
Hardness | Soft | 90±5HRB |
FullHard | 60±5HRB | |
Mark | Customer’s mark can be printed | |
Specification
Surface Finish of Galvanized Steel Strip
Surface finish | Pattern | Application |
Regular Spangle | Standard spangles with flower pattern | General uses |
Small Spangle | Minimized spangles than regular | General painting applications |
Big Spangle | Big spangles than regular | General painting applications |
Zero Spangle | Extremely minimized spangles | Special painting applications |
Surface Treatmentof Galvanized Steel Strip
Surface Treatment | Features |
Chemical passivating treatment | minimize thechance of white rust forming during transit and storage |
maintain thebright, shiny appearance for a longer time | |
Oils | minimize thetendency for storage and transit stain |
Passivating + oils | provide theprotection from storage and transit stain by special chemicals calledcorrosion inhibitors |
Standard and Grade of Galvanized Steel Strip
Quality Designation | JIS G3312-1994 | EN 10326-2004 EN 10327-2004 (BASE METAL) | ASTM A653-02a(BASE PLATE) | Description |
Commercial Steel | CGCC | DX51D+Z/AZ | CS Type A/B/C | Can be moderatelyformed. A specimen cut in any direction can be bent flat on itself withoutcracking. |
Forming Steel | CGCD1 | FS Type A, Type B | ||
Drawing Steel | - | DX52D+Z/AZ DX53D+Z/AZ | DDS TYPE A/C | Can be used indrawing applications. |
Structural Steel | CGC400 | S280D+Z/AZ | SS275 | |
CGC440 | S350D+Z/AZ | SS340 Class 1 |
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