Hot-Dipped Galvanized steel Coil
Hot-dipped galvanized steel is made from steel plate, which is dipped into the dissolved zinc bath, with a zinc layer on the surface. It mainly adopts the continuous galvanizing production process. That means the cold rolled coils are put into the dissolved zinc bath for continuous galvanizing process.
Description
Coating gauges:
Coating designation | Coating thickness (oz/ft²) | Coating thickness (g/m²) |
---|---|---|
G40 | 0.4 | 120 |
G60 | 0.6 | 180 |
G90 | 0.9 | 275 |
G115 | 1.15 | 350 |
Zinc Coating (Both Sides) | ASTM A653 | ASTM A653 - Single Spot | EN 10142 | EN 10142 - Single Spot | JIS G 3302 | JIS G 3302 - Single Spot |
---|---|---|---|---|---|---|
Zn Coating Mass(gm) | Triple Spot Test | Single Spot Test | Triple Spot Test | Single Spot Test | Triple Spot Test | Single Spot Test |
90 | 90 | 75 | - | - | - | - |
100 | - | - | 100 | 85 | 100 | 85 |
120 | 120 | 90 | - | - | 120 | 102 |
140 | - | - | 140 | 120 | - | - |
180 | 180 | 150 | - | - | 180 | 153 |
200 | - | - | 200 | 170 | 200 | 170 |
275 | 275 | 235 | 275 | 235 | 275 | 234 |
350 | 300 | 300 | 350 | 300 | 350 | 298 |
Chemical Properties:
Steel designation | Maximum percentage of element by mass | C% | Mn% | P% | S% | Cu% | Ni% | Cr% | Mo% |
---|---|---|---|---|---|---|---|---|---|
Element | C% | Mn% | P% | S% | Cu% | Ni% | Cr% | Mo% | |
Commercial quality (CQ) | 0.10 | 0.60 | 0.03 | 0.035 | 0.20 | 0.20 | 0.15 | 0.06 |
Mechanical properties:
Mechanical Properties ASTM A 653 | Yield Strength | Tensile Strength | % Elongation (Minimum) |
---|---|---|---|
Product Designation | MPa | MPa | All Thickness |
CS Type A | (170 – 380) | - | >20 |
CS Type B | (205 – 380) | - | >20 |
CS Type C | (170 – 410) | - | >20 |
Mechanical Properties JIS G 3302 | Yield Strength | Tensile Strength | % Elongation (Minimum) 0.40 – 0.60 | % Elongation (Minimum) 0.60 – 1.00 | % Elongation (Minimum) 1.00 – 1.50 | % Elongation (Minimum) 0.25 – 0.40 |
---|---|---|---|---|---|---|
Product Designation | N / mm2 | N / mm2 | Nominal Thickness | Nominal Thickness | Nominal Thickness | Nominal Thickness |
SGCC | - | - | - | - | - | - |
SGCH | - | - | - | - | - | - |
SGCD1 | - | 270 Min | - | 34 | 36 | 37 |
SGC340 | 245 Min | 340 Min | (20) | 20 | 20 | 20 |
SGC570 | 560 Min | 570 Min | - | - | - | - |
Mechanical Properties ASTM EN 10142 | Yield Strength | Tensile Strength | % Elongation (Minimum) <0.70 mm | % Elongation (Minimum) 0.7mm – 1.5 mm |
---|---|---|---|---|
Product Designation | N / mm2 | N / mm2 | Nominal Thickness | Nominal Thickness |
DX51D | - | 270 – 500 | 20 | 22 |
DX52D | 140 – 300 | 270 – 420 | 24 | 26 |
Bending Test:
Product thickness (mm) | Number of bends (mm) |
---|---|
0.30 – 0.80 | 8 |
0.80 – 1.20 | 5 |
1.20 – 2.00 | 3 |
Surface treatment:
Treatment | Description |
---|---|
Chemical Passivation | (C):Normal Chromate Coating |
Oiling | (O): Protective Anti-rust oil |
Surface Quality | Skin passed |
Additional information
Width | 800mm to 1250mm |
---|---|
Thickness | 0.3mm to 4.00mm |
Grades | SGCC SGCH SGC340 SGHC SGH340 SGH400 DX51D S400GD S500GD S550GD |
Coil ID | 610mm |
Coating Width | 100-350g/m2 |
Surface Finish | Regular Spangle ,Zero Spangle |
Surface Treatment | Chromated /oiled(optional) |
Coil Weight | 4-12Mt |
packaging | Domestic supply (G.I): • Rust proof paper, VCI. • Inner and outer rings. • Edge protectors. Export Packaging (G.I): • Rust Proof Paper, VCI. • Cardboard body, edge protectors. • Steel body wraps. • Steel edge protectors (outer). • Steel ring protector (inner). |