Hot Dip Galvanized Coil

Hot-dip galvanizing is one of the effective means to delay the environmental corrosion of iron and steel materials, it is the surface of the cleaned, activated iron and steel products immersed in molten zinc, through the reaction and diffusion between iron and zinc, in the iron and steel products surface plating good adhesion of zinc alloy coating.

Hot dip galvanizing is to make the molten metal react with the iron substrate to produce an alloy layer, so that the substrate and the coating are combined. Hot galvanizing is to pickle the steel and iron parts first. In order to remove the iron oxide on the surface of the steel and iron parts, after pickling, it is cleaned by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent into the hot dip plating tank. Hot dip galvanized coil has the advantages of uniform coating, strong adhesion and long service life.

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Products DETAILS

Hot Dip Galvanized Coil

Product Parameters

Product Name
Hot Dip Galvanized Coil
Thickness
0.12mm-3.5mm
Width
600mm-1500mm
Length
508mm/610mm, Support Customization
Standard
AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.
Zinc Layer
Hot Galvanizing: 60-275g/m²
Pre-galvanized: 80-275g/m²
Chemical Composition

   Standard
Grade
C Si Mn
P
S
Ti

Forcold Forming

Chinese Standard


DX51D+Z
0.12
0.50
0.60
0.100
0.045
0.30
DX52D+Z
0.12
0.50
0.60
0.100
0.045
0.30
DX53D+Z
0.12
0.50
0.60
0.100
0.045
0.30
DX54D+Z
0.12
0.50
0.60
0.100
0.045
0.30
DX56D+Z
0.12
0.50
0.60
0.100
0.045
0.30
DX57D+Z
0.12
0.50
0.60
0.100
0.045
0.30

Forcold Forming

Japanese Standard


SGCC
0.15
0.50
0.80
0.050
0.030
0.025
SGCD1
0.12
0.50
0.60
0.040
0.030
0.025
SGCD2
0.10
0.50
0.45
0.030
0.030
0.025
SGCD3
0.08 0.50
0.45
0.030
0.030
0.025
SGCD4
0.06 0.50
0.45
0.030
0.030
0.025

For Structure

Japanese Standard


SGC340
0.25
0.50
1.70
0.200
0.035
0.250
SGC400
0.25
0.50
1.70
0.200
0.035
0.150
SGC440
0.25
0.50
2.00 0.200
0.035
0.150
SGC490
0.30
0.50
2.00 0.200
0.035
0.250
SGC510
0.30
0.50
2.50 0.200
0.035
0.250

For Structure

AISI Standard


S220GD+Z
0.20
0.60
0.70
0.100
0.045
0.025
S250GD+Z
0.20
0.60
0.70
0.100
0.045
0.025
S280GD+Z
0.20
0.60
0.70
0.100

0.045

0.025
S320GD+Z
0.20
0.60
0.70
0.100
0.045
0.025
S350GD+Z
0.20
0.60
0.70
0.100
0.045
0.025
S500GD+Z
0.20
0.60
0.70
0.100
0.045
0.025
Mechanical Properties

Grade
Yield Strength MPa≥
Tensile Strength MPa≥
Elongation A%≥
DX51D Z/ZM/AZ/AM
240-380
270-500
22
DX52D Z/ZM/AZ/AM
140-300
270-420
26
DX53D Z/ZM/AZ/AM
140-260
270-380
30
DX54D Z/ZM/AZ/AM
120-220
260-350
36
S220GD Z/ZM/AM
220 300 20
S250GD Z/ZM/AZ/AM
250
330 19
S280GD Z/ZM/AM
280 360 18
S300GD A/AM
300 380 18
S320GD Z/ZM/AM
320 390 17
S350GD Z/ZM/AZ/AM
350 420 16
S450GD A/AM
450 480 15
S550GD Z/ZM/AZ/AM
550 550
Galvanized Surface Selection
Use of The Environment
Recommended Zinc Thickness
Indoor Use
Z10 or Z12 (100g/㎡or 120g/㎡)
Suburbs
Z20 and Painting (200g/㎡)
Urban or Industrial Area
Z27 (270g/㎡) or G90 (US Standard) and painted
Coastal Area
Thicker than Z27 (270g/㎡) or G90 (US Standard) and painted
Punch or Deep Drawing Application
Thicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping

Surface Treatment Type
Code
Features
Chromic Acid Treatment
C
Good corrosion resistance, suitable for bare state
Chromic Acid Treatment+Oiling
S Good corrosion resistance
Phosphoric Acid Treatment (Including Sealing Treatment)
P
Have a certain corrosion resistance, good paint performance
Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling
Q Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage
Phosphoric Acid Treatment (Excluding Sealing Treatment)
T Have a certain corrosion resistance, good paint performance
Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling
V Has a certain corrosion resistance, good paint performance, and prevent rust
Oiling
O Prevent rust during transportation and storage
No Treatment
M Suitable for immediate painting
Material Comparison
Chinese Standard
Japan Standard
European Standard
DX51D Z/DC51D Z (CR)
SGCC
DX51D Z
DX52D Z/DC52D Z
SGCD1
DX52D With
DX53D Z/DC53D Z/DX54D Z/DC54D Z
SGCD2/SGCD3
DX53D Z/DX54D Z
S220/250/280/320/350/550GD Z
SGC340/400/440/490/570
S220/250/280/320/350GD Z
DX51D Z/DD51D Z (HR)
SGHC
DX51D Z




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