Products & Specification.
Galvanized Iron |
The cold rolled steel passes through a molten zin pot conotaining 97% zinc (0.03% or less AL), undergoing the galvanizing process, which gives each side of the sheet an equal thickness of coating. Depending on the surface treatment of the plated sheet, they are categorized into Regular Spangle, Zero Spangle and Extra Smooth.
Corrosion Resistance
All galvanized steel is treated with chromic acid for protection against rust, to maintain original surface luster for a longer period.
Formability
Galvanized steel is produced through continuous annealing, tempering, and post-treatment process so as to have very excellent formability. |
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| Material Specification |
| Classification |
KS |
JIS |
| D 3506 |
G 3302 |
| Commercial Quality |
SGCC |
SGCC |
| Lock Forming Quality |
SGCD1 |
SGCD1 |
| Drawing Quality |
SGCD2 |
SGCD2 |
| Deep Drawing Quality |
SGCD3 |
SGCD3 |
| Deep Drawing Special Killed |
SGCD3-N |
SGCD3-N |
| Structural Quality |
SGC340~570 |
SGC340~570 |
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| Mechanical Properties |
| Division |
Material
Type |
Yield Point
(N/mm2) |
Tensile
Strength
(N/mm2) |
| KS D 3506 / JIS G 3302 |
SGCC |
|
|
| SGCD1 |
|
270 |
| SGCD2 |
|
270 |
| SGCD3 |
|
270 |
| SGC340 |
245 |
340 |
| SGC400 |
295 |
400 |
| SGC440 |
335 |
440 |
| SGC490 |
365 |
490 |
| SGC570 |
560 |
570 |
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| Mechanical Properties |
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Elongation (%) |
| Division |
Norminal Thickness (mm) |
| |
0.25~0.40 |
0.40~0.60 |
0.60~1.0 |
1.0~1.6 |
1.6~2.5 |
2.5 over |
| KS D 3506 / JIS G 3302 |
|
|
|
|
|
|
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34 |
36 |
37 |
38 |
|
| |
36 |
38 |
39 |
40 |
|
| |
38 |
40 |
41 |
42 |
|
| 20 |
20 |
20 |
20 |
20 |
20 |
| 18 |
18 |
18 |
18 |
18 |
18 |
| 18 |
18 |
18 |
18 |
18 |
18 |
| 16 |
16 |
16 |
16 |
16 |
16 |
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| Surface Finish & Quality |
| Classification |
Weight Of
Zinc Coating |
Surface Finish & Characteristics |
| Regular Spangle |
Z06-Z60 |
Original patterns and gross. Excellent anti-corrosive property |
| Zero Spangle |
Z06-Z60 |
Fine crystals by suppressing cystal growth during solidification of zinc. Even surface |
| Extra Smooth |
Z06-Z60 |
Execution of skin pass on the Zero Spangle surface.
Beautiful surface and excellent painting. |
| Galvanealed |
F04-F18 |
Maximization of welding and painting property with alloy treatment of iron property and zinc. |
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| Surface Finish & Quality |
| Classification |
Quality |
| Regular Spangle |
Commercial Quality. Lock Forming Quality
Drawing Quality. Structural Quality |
| Zero Spangle |
Commercial Quality. Drawing Quality
Structural Quality |
| Extra Smooth |
Commercial Quality. Drawing Quality
Structural Quality |
| Galvanealed |
Commercial Quality. Drawing Quality
Structural Quality |
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