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
|
