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1. Hot-Dip Galvanized Steel Product Standard

Cold-Rolled Coil

Classification / Standards
POSCO
KS
D3506
JIS
G3302
ASTM
EN10142
89
95
Commercial
CGCC
SGCC
SGCC
A526
A 653-CQ
DX51D
Lock forming
CGCF
SGCD 1
SGCD1
A527
A 653-LFQ
-
Drawing
CGCD
SGCD 2
SGCD 2
A528
A 653-DQ
DX52D
Deep drawing
CGCP
SGCD 3
SGCD 3
-
-
DX53D
Non-Aging Deep Drawing
CGCN
SGCD 3N
SGCD 3N
A642
A 653-DQSK
DX54D
Non-Aging Extra Deep Drawing
CGCE
-
-
-
-
-
Structural Quality
CGL35
-
CGC41
CGC45
CGC50
CGC58
SGC35
-
SGC 41
SGC 45
SGC 50
SGC 58
SGC 340
-
SGC 400
SGC 440
SGC 490
SGC 570
A446    Gr A
        Gr B
        Gr C
        Gr D
        Gr F
        Gr E
A 653-SQ230
A 653-SQ255
A 653-SQ275
A 653-SQ340
-
A 653-SQ550
S220 GD
S250 GD
S280 GD
S320 GD
S350 GD
S550 GD
High- strength Steel
CGCHS 35
CGCHS 40
CGCHS 45
CGCHS 50
CGCHS 60
-
-
-
-
-
*1)Standard for En structural quality is En10147
*2)Tensile strength of A446 Grade A is 32kg/m²

Hot-Rolled Coil

Classification / Standards
POSCO
KS D 3506
JIS G 3302
Commercial
CGHC
SGHC
SGHC
Structural Quality
CGH41
CGH45
CGH50
CGH55
SGH41
SGH45
SGH50
SGH55
SGH400
SGH440
SGH490
SGH540

2. POSCO Standards

Cold-Rolled Coil

Classification
Thickness
mm
Yield Point min.
Kg/m²
Tensile Strength min.
Kg/m²
Elongation min. %
Test Piece
Thickness mm
0.2525and over, under
0.40
0.4025and over, under
0.60
0.6025and over, under
1.0
1.025and over, under
1.6
1.625and over, under
2.3
CGCC
0.2~2.3
-
-
-
-
-
-
-
No.5, rolling direction
CGCF
-
28
-
34
36
37
38
CGCD
-
28
-
36
38
39
40
CGCP
-
28
-
38
40
41
42
CGCN
-
28
-
38
40
41
42
CGCE
-
28
-
40
42
43
44
CGC35
25
35
20
20
20
20
20
CGC41
30
41
18
18
18
18
18
CGC45
34
45
18
18
18
18
18
CGC50
37
50
16
16
16
16
16
CGC58
57
58
-
-
-
-
-
CGCHS35
20
35
28
30
32
34
36
CGCHS40
23
40
25
27
29
31
33
CGCHS45
32
45
23
25
27
28
29
CGCHS50
34
50
21
22
23
24
25
CGCHS60
40
60
16
17
18
18
18
Remark: 1. Non-aging of CGCN and CGCE is guaranteed for 6 months after shipping.

Hot-rolled Sheet

Classification
Thickness (mm)
Yield Point min.Kg/m²(N/m²)
Tensile Strength
min.Kg/m²(N/m²)
Elongation
min.%
Test Piece
CGCH
1.4~4.5
-
-
-
No.5, rolling direction
CGC 35
25(245)
35(340)
20
CGC 41
30(295)
41(400)
18
CGC 45
34(335)
45(440)
18
CGC 50
37(365)
50(490)
16
CGC 55
41(400)
55(540)
16

3. Coating Weight

Minimum Coating Weight (Both-sided coating)

Coat Weight Type
Average Value of Both-Sided, Triple Spots Method
Minimum Value of Both-Sided, Single Spot Method
Corresponding Standards (Marking Symbol)
KS D3506
JIS G3302
060
60
51
Z06, F06
Z06, F06
080
80
68
Z08, F08
Z08, F08
090
90
77
-
-
100
100
85
Z10, F10
Z10, F10
120
120
102
Z12, F12
Z12, F12
150
150
128
-
-
180
180
153
Z18, F18
Z18, F18
200
200
170
Z20
Z20
220
220
187
Z22
Z22
250
250
213
Z25
Z25
275
275
234
Z27
Z27
300
300
255
-
-
350
350
298
Z35
Z35
450
450
383
Z45
Z45
500
500
426
-
-
600
600
510
Z60
Z60

Remark:
  1. "K" is marked for non- alloy products and "S" is added in front of the alloy product code. However, in case of alloy products, coat weight should not exceed 200.
  2. For drawing (CGCF,CGCD,CGCP,CGCN,CGCE), marking codes exceeding K350 and S100 are not applied.
  3. For both-side, triple spots coating weight, the average value of the measurement of 3 test pieces is applied.
  4. For one-side, single spot coating weight, the minimum value of the measurement of 3 test pieces is applied.
  5. Separate consultation is necessary for the maximum coating weight on both sides.

Minimum Coat Weight

Type
Coating
Both side
Non- Alloy
Zero Spangle
J
Alloy
G
Remark: Otherwise specified, both-side zero spangle is used in principal.

Chemical Treatment

Type
Mark
General chromate treated
CL
Special chromate treated
CH
Non-treated
M

 
Oiling
Type
mark
Oiled
O
Non-oiled
X

4. Thickness tolerance

Cold-Rolled Coil

Thickness / Width
Under 630
630 and over, under1,000
1,000 and over, under
1,250
1,250 and over, under
1,600
1,600 and over
under 0.25
±0.04
±0.04
±0.04
-
-
0.25 and over, under0.40
±0.05
±0.05
±0.05
±0.06
-
0.40 and over, under 0.60
±0.06
±0.06
±0.06
±0.07
±0.08
0.60 and over, under 0.80
±0.07
±0.07
±0.07
±0.08
±0.09
0.80 and over, under1.00
±0.08
±0.08
±0.09
±0.10
±0.11
1.00 and over, under 1.25
±0.09
±0.09
±0.10
±0.11
±0.13
1.25 and over, under 1.60
±0.10
±0.11
±0.12
±0.13
±0.16
1.60 and over, under 2.00
±0.11
±0.12
±0.13
±0.15
±0.17
2.00 and over, under 2.30
±0.13
±0.14
±0.15
±0.17
±0.19

Hot-Rolled Coil

Thickness / Width
1,000¹Ì¸¸
1,000 and over, under
1,250
1,250 and over, under
1,600
1,600 and over
1.60 and over, under 2.30
±0.17
±0.18
±0.20
±0.22
2.30 and over, under 3.20
±0.21
±0.22
±0.27
±0.30
3.20 and over, under 4.50
±0.30
±0.32
±0.35
-

Equal Coating Thickness

Coating Weight Marking Code (Zinc)
K060
K080
K100
K120
K180
K200
K220
K250
K275
K350
K450
K600
Coating Thickness
0.013
0.017
0.021
0.026
0.034
0.040
0.043
0.049
0.054
0.064
0.080
0.102

Coating Weight Mark (Alloy)
SO40
SO60
 SO80
S100
S120
Coating Thickness
0.008
0.013
 0.017
0.021
0.021

5.Width Tolerance

Width
Tolerance
Hot-Rolled Coil
Cold-Rolled Coil
A
B
1,500 and under
+25
  0
+10
  0
+7
  0
1,500 Over
+10
  0
Remark: Unless otherwise specified, A is applied.


6. Length Tolerance
Cold-Rolled Coil
Hot-Rolled Coil
+10
  0
+10
  0

7. Shape

(Camber)

Cold-Rolled Steel Sheet
Width / Length
Sheet
Coil
Under 2,000
2,000 and over
Under 630
4
4 to 2,000 to any given length
630 and over
2
2 to 2,000 to any given length

Hot-Rolled Steel Sheet
Width/ Length
Sheet
Coil
Under 2,500
2,500 and over under4,000
4,000 and over
Under 630
5
8
12
5 to 2,000 to any given length
630 and over, under 1,000
4
6
10
1,000 and over
3
5
8

((off-squaredness)

off-squaredness: A/WX100(%), it shall not exceed 1%

8. Flatness

Cold-Rolled Steel Sheet

Width / Type
Wave (Bow)
Center Wave
Edge Wave
Under 1,000
128 and under
8 8 and under
8 and under
1,000 and over, under1,250
15 8 and under
9 8 and under
9 and under
1,250 and over, under1,600
15 8 and under
11 8 and under
11 and under
1,600 and over
20 8 and under
13 8 and under
13 and under

Hot-Rolled Sheet

Width / Type
Wave (Bow)
Center Wave
Edge Wave
Under1,000
16 and under
16 and under
16 and under
1,000 and over, under1,600
18 and under
18 and under
18 and under
1,600 and over
20 and under
20 and under
20 and under
Remark: Flatness is measured on top of a flat table. The value is calculated by subtracting the thickness of the steel from the maximum deformation value. It is applied to the upper side of the sheet.

9. KS standard(KS D 3506 Hot-Dip Galvanized Steel Sheet and Coil)

Cold-Rolled Steel Sheet
(unit::3 )
Classification
Thickness
Yield Point
min. N/mm²
Tensile Strength
min.
N/mm²
Elongation (min.%)
Test Piece
Thickness
0.25 and over
0.40 and over,
under0.06 
0.06  and over,
under1.0 
1.0  and over,
under1.6 
1.6 and over, under
2.3 
1.6 and over 
SGCC
0.25·­3.2
205
270
-
-
-
-
-
-
No.5, rolling direction
SGCD 1
0.40·­2.3
-
270
-
34
36
37
38
-
SGCD 2
-
270
-
36
38
39
40
-
SGCD 3
0.60·­2.3
-
270
-
(38)
40
41
42
-
SGC 35
0.25·­2.3
245
340
20
20
20
20
20
20
SGC 41
295
400
18
18
18
18
18
18
SGC 45
335
440
18
18
18
18
18
18
SGC 50
365
490
16
16
16
16
16
16
SGC 58
0.25·­2.0
560
570
-
-
-
-
-
-
Remark: Prior consultation is required for the values in ( ).

Hot-Rolled Sheet
(unit::3 )
Classification
Thickness
(3 )
Yield Point
min. N/mm²
Tensile Strength
min. N/mm²
Elongation
min.%
Test Piece
SGHC
1.6·­4.5
205
270
-
No.5, rolling direction
SGH 35
245
340
20
SGH 41
295
400
18
SGH 45
335
440
18
SGH 50
365
490
16
SGH 55
400
540
-
Remark:The yield point and tensile strength of SGHC are 206N/mm² and 275N/mm² or over, respectively

10. Thickness Tolerance

Cold-Rolled Steel Sheet
(unit::3 )
Thickness/Width
630 and under 
630  and over,
under1,000 
1,000  and over,
under1,250 
1,250  and over,
under1,600 
1,600 and over 
Under 0.25
±0.04
±0.04
±0.04
-
-
0.25  and over, under 0.40 
±0.05
±0.05
±0.05
±0.06
-
0.40  and over, under 0.60 
±0.06
±0.06
±0.06
±0.07
-
0.60  and over, under 0.80 
±0.07
±0.07
±0.07
±0.07
±0.08
0.80  and over, under 1.00 
±0.08
±0.08
±0.09
±0.09
±0.10
1.00  and over, under 1.25 
±0.09
±0.09
±0.10
±0.10
±0.12
1.25  and over, under 1.60 
±0.10
±0.11
±0.11
±0.12
±0.14
1.60  and over, under 2.00 
±0.11
±0.12
±0.13
±0.14
±0.16
2.00  and over, under 2.50 
±0.13
±0.14
±0.15
±0.16
±0.18
2.50  and over, under 3.15 
±0.15
±0.16
±0.17
±0.18
±0.21
3.15  and over
±0.17
±0.18
±0.20
±0.21
-

Hot-Rolled Sheet

(unit:3 )

General Use

Structural Quality
Nominal Thickness
Width
Nominal Thickness
Width
Under 1200
1200 and over,
under 1500
1500 and over,
under 1800
1800 and over, 
under 2300
Under1600 
1600  and over, under
2000 
1.60 and over under2.00
±0.17
±0.18
±0.19
±0.22
1.60 and over under 2.00
±0.20
±0.24
2.00 and over under2.50
±0.18
±0.20
±0.22
±0.26
2.00 and over under 2.50
±0.21
±0.26
2.50 and over under3.15
±0.20
±0.22
±0.25
±0.27
2.50 and over under 3.15
±0.23
±0.30
3.15 and over under4.00
±0.22
±0.24
±0.27
±0.28
3.15 and over under 4.00
±0.25
±0.35
4.00 and over, under5.00
±0.25
±0.27
-
-
4.00 and over, under 5.00
±0.46
-
5.00 and over,under 6.00
±0.27
±0.29
-
-
5.00 and over, under 6.00
±0.51
-
6.00
±0.30
±0.31
-
-
      

11. Width Tolerance
(unit:3 )
Width
Tolerance
Hot-Rolled Sheet
Cold-Rolled Sheet
A
B
1,500 and under
+25
   0
+10
   0
+7
   0
Over1,500 
+10
   0

12.Length Tolerance
Cold-Rolled Sheet
Hot-Rolled Sheet
+15
   0
+15
   0

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