|
1.Thickness Tolerance
POSCO Standard
 |
|
Thickness/Width
|
250 and over, Under
400
|
400 and over, Under
630
|
630 and over, Under
1000
|
1000 and over, Under
1250
|
1250 and over, Under
1600
|
1600 and over
|
|
Under 0.25
|
±0.030
|
±0.030
|
±0.030
|
±0.030
|
-
|
-
|
|
0.25 and over, Under
0.40
|
±0.035
|
±0.035
|
±0.040
|
±0.040
|
-
|
-
|
|
0.60 and over, Under
0.80
|
±0.040
|
±0.040
|
±0.050
|
±0.050
|
±0.060
|
-
|
|
0.60 and over, Under
0.80
|
±0.045
|
±0.045
|
±0.060
|
±0.060
|
±0.060
|
±0.070
|
|
0.80 and over, Under
1.00
|
±0.050
|
±0.050
|
±0.060
|
±0.070
|
±0.080
|
±0.090
|
|
1.00 and over, Under
1.25
|
±0.050
|
±0.060
|
±0.070
|
±0.080
|
±0.090
|
±0.110
|
|
1.25 and over, Under
1.60
|
±0.060
|
±0.060
|
±0.090
|
±0.100
|
±0.110
|
±0.130
|
|
1.60 and over, Under
2.00
|
±0.080
|
±0.080
|
±0.110
|
±0.120
|
±0.130
|
±0.150
|
|
2.00 and over, Under
2.50
|
±0.080
|
±0.090
|
±0.130
|
±0.140
|
±0.150
|
±0.170
|
|
2.50 and over, Under
3.00
|
±0.090
|
±0.100
|
±0.150
|
±0.160
|
±0.170
|
±0.200
|
|
KS, JIS Standard
|
|
Thickness/Width
|
Under 600
|
600 and over, Under
1000
|
1000 and over, Under
1250
|
1250 and over, Under
1600
|
1600 and over
|
|
Under 0.25
|
±0.030
|
±0.030
|
±0.030
|
-
|
-
|
|
0.25 and over, Under
0.40
|
±0.040
|
±0.040
|
±0.040
|
-
|
-
|
|
0.40 and over, Under
0.60
|
±0.050
|
±0.050
|
±0.050
|
±0.060
|
-
|
|
0.60 and over, Under
0.80
|
±0.060
|
±0.060
|
±0.060
|
±0.070
|
±0.080
|
|
0.80 and over, Under
1.00
|
±0.070
|
±0.070
|
±0.080
|
±0.090
|
±0.100
|
|
1.00 and over, Under
1.25
|
±0.080
|
±0.080
|
±0.090
|
±0.100
|
±0.120
|
|
1.25 and over, Under
1.60
|
±0.090
|
±0.100
|
±0.110
|
±0.120
|
±0.140
|
|
1.60 and over, Under
2.00
|
±0.100
|
±0.110
|
±0.120
|
±0.140
|
±0.160
|
|
2.00 and over, Under
2.50
|
±0.120
|
±0.130
|
±0.140
|
±0.160
|
±0.180
|
|
2.50 and over, Under
3.15
|
±0.140
|
±0.150
|
±0.140
|
±0.180
|
±0.200
|
|
3.15 and over
|
±0.160
|
±0.170
|
±0.190
|
±0.200
|
-
|
|
2.Width Tolerance
POSCO, KS, JIS Standards
|
|
EDGE TYPE
|
Width
|
Tolerance
|
|
MILL EDGE
|
Under 1250
|
+ 7,0
|
|
1250 and over
|
+ 10.0
|
|
SLIT EDGE
|
Under 1250
|
+ 3,0
|
|
1250 and over
|
+ 4,0
|
|
3.Width
POSCO Standard, KS, JIS Standard
|
| (A) |
(Unit:mm)
|
|
(B) |
(Unit:mm)
|
|
Length
|
Tolerance
|
|
Under 2000
|
+10,0
|
|
2000 and over,
Under 4000
|
+15,0
|
|
4000 and over,
Under 6000
|
+20,0
|
| Remark: |
Length tolerance is in accordance with either A or
B, depending on customer's request.
However, if not specified, it
complies with A. |
|
|
|
|
Length
|
Tolerance
|
|
Under 1000
|
+3,0
|
|
1000 and over,
Under 2000
|
+4,0
|
|
2000 and over,
Under 3000
|
+6,0
|
|
3000 and over,
Under 4000
|
+8,0
|
|
|
4.Maximum Flatness
POSCO Standard,KS, JIS Standard
|
|
Width/Classification
|
WAVE
|
EDGE
|
CENTER
|
|
|
Under 1000
|
12(2)
|
8(2)
|
6(2)
|
|
1000 and over,
Under 1250
|
15(3)
|
10(2)
|
8(2)
|
|
1250 and over,
Under 1600
|
15(3)
|
12(3)
|
9(2)
|
|
1600 and over
|
20(5)
|
14(4)
|
10(2)
|
| Remark: |
1. In principle, the values in the parentheses are applied
to stretcher leveler drawing steels.
|
|
|
5.Maximum
Camber
POSCO Standard
|
| Width/Classification |
Sheet
|
Coil
|
|
Up to 2000 in length
|
Up to 2000 in length
|
|
Under 600
|
4
|
4/2000 in arbitrary length
|
|
600 and over
|
2
|
2/2000 in arbitrary length
|
Remark : It is not applied to abnormal parts of steel.
|
KS, JIS Standard
|
| Width/Classification |
Sheet
|
Coil
|
|
Up to 2000 in
length
|
Up to 2000 in
length
|
|
30 and over, Under
60
|
8
|
8/2000 in arbitrary length
|
|
60 and over, Under
600
|
4
|
4/2000 in arbitrary length
|
|
600 and over
|
2
|
2/2000 in arbitrary length
|
Remark
|
1. It is not applied to abnormal parts of steel.
2. Camber refers to the force from right to
left against rolling direction. It is estimated as follows.
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