High Tensile Galvanized Steel-G550/G450/G350
Cold rolled carbon steel as raw materials, continuous hot galvanizing.
Thickness: 0.3-3.0mm
Width: Less than 1250mm
Steel Grade: G550,G450,G350
Zinc Coating: Z 10 to Z 27
Internal Diameter: 508mm
Coil OD: 1000~1500mm
Surface treatment: Chromated, unoiled/oiled, bright finished, spangle, fingerprint resistance.
Coil Weight: Usually 2~8 tons per roll, we can produce as per customer's requests
Thickness tolerance: +/- 0.03mm
Applications: Draw quality, deep drawing, Cable industry, welding pipe, building material, construction material etc.
Annual production: 200,000 MT/year
High Tensile steel grade:G350,G450,G550
Chemistry Composition %
|
Steel grade |
C% |
Mn% |
Si% |
S% |
P% |
|
G350 |
≤ 0.15 |
≤ 0.95 |
|
≤ 0.035 |
≤ 0.035 |
|
G450 |
≤ 0.21 |
≤ 1.4 |
|
≤ 0.035 |
≤ 0.035 |
|
G550 |
0.12-0.20 |
1.20-1.60 |
0.20-0.60 |
≤0.050 |
≤0.045 |
Mechanical Properties
|
Steel grade |
Tensile test |
||
|
Yield point σb(Mpa) |
Strength of extension σb(Mpa) |
Extensibility δ (%) |
|
|
≥ |
≥ |
||
|
G350 |
350 |
370-450 |
≥ 26 |
|
G450 |
450 |
480-510 |
≥ 21 |
|
G550 |
550 |
590-660 |
22 |
