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Cold Rolled Steel Sheets & Coils(KS D3512 SCP-1, JIS G3141 SPCC) |
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 Click to enlarge image
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1. Classification and Chemical Composition |
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Class |
Symbol |
Quality |
chemical composition % |
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C |
Si |
Mn |
P |
S |
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Class 1 |
SPCC |
Commercial Quality |
0.12 Max. |
- |
0.50 Max. |
0.040 Max. |
0.045 Max. |
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Class 2 |
SPCD |
Drawing Quality |
0.10 Max. |
- |
0.45 Max. |
0.035 Max. |
0.035 Max. |
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Class 3 |
SPCE |
Deep Drawing Quality |
0.08 Max. |
- |
0.40 Max. |
0.030 Max. |
0.030 Max. |
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Remarks : 1 Where the value obtained by the tension test and or Erichsen value are
guaranteed by the order of purchaser for Class 1 sheet or strip normally
refined or as it is annealed, its symbol for classification shall be SPCCT,
which has a suffix T at the end.
2. Where the non-aging is guaranteed by the order of purchaser for Class 3
sheet or strip normally refined or as it is annealed, its symbol for classification shall be SPCEN, which has a suffix N at the end. |
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2. Permissible Variations in Dimensions & Shapes.
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1. Thickness Tolerances |
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Divison by nominal width |
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Divison by nominal
thickness | |
Under 630 |
630 to 1,000, excl. |
1,000 to 1,250, excl. |
1,250 to 1,600, excl. |
1,600 and over |
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under 0.25
0.25 to 0.40, excl.
0.40 to 0.60, excl.
0.60 to 0.80, excl.
0.80 to 1.00, excl.
1.00 to 1.25, excl.
1.25 to 1.60, excl.
1.60 to 2.00, excl.
2.00 to 2.50, excl.
2.50 to 3.15, excl.
3.15 and over. |
± 0.03
± 0.04
± 0.05
± 0.06
± 0.07
± 0.08
± 0.09
± 0.10
± 0.12
± 0.14
± 0.16 |
± 0.03
± 0.04
± 0.05
± 0.06
± 0.07
± 0.08
± 0.10
± 0.11
± 0.13
± 0.15
± 0.17 |
± 0.03
± 0.04
± 0.05
± 0.06
± 0.08
± 0.09
± 0.11
± 0.12
± 0.14
± 0.16
± 0.19 |
-
-
± 0.06
± 0.07
± 0.09
± 0.10
± 0.12
± 0.14
± 0.16
± 01.18
± 0.20 |
-
-
-
± 0.08
± 0.10
± 0.12
± 0.14
± 0.16
± 0.18
± 0.20
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2. Width Tolerances
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3. Length Tolerances
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Division by nominal width |
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Under 1,250 |
1,250 and over |
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+7
0 |
+10
0 |
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Remark : To the stretcher-leveler finished
steel sheet, the plus side
tolerance does not apply. | |
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Division by nominal length |
Tolerance |
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Under 2,000 |
+10
0 |
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2,000 to 4,000, excl. |
+15
0 |
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4,000 to 6,000, excl. |
+20
0 |
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Remark : To the stretcher-leveler finished steel sheet, the plus side
tolerance does not apply. | |
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1. Classification and Chemical Composition |
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Classification |
Quality |
chemical composition % |
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C |
Si |
Mn |
P |
S |
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A366
A619
A620 |
Commercial Quality
Drawing Quality
Deep Drawing Special Killed |
0.15 Max.
0.10 Max.
0.10 Max. |
-
-
- |
0.60 Max.
0.50 Max.
0.50 Max. |
0.035 Max.
0.025 Max.
0.025 Max. |
0.040 Max.
0.035 Max.
0.035 Max. | |
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2. Permissible Variations in Dimensions & Shapes, ASTM a568.83
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Specified width, in. (mm) |
Thickness Tolerances Over, in. No Tolerance Under |
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Specified Minimum Thickness, in. |
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Over 0.098(2.49) to 0.142 (3.61) inch |
Over 0.071(1.80) to 0.098(2.49) inch |
Over 0.057 (1.45) to 0.071(1.80) inch |
Over 0.039 (0.99) to 0.057(1.45) inch |
Over 0.019 (0.48) to 0.057(0.99) inch |
0.014 (0.36) to 0.019(0.48) inch |
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Over 12(305) to 15(381), inch
Over 15(381) to 72(1,829), inch
Over 72 (1,829) |
0.010 (0.25)
0..012(0.30)
0.014(0.36) |
0.010(0.25)
0.010(0.25)
0.012(0.30) |
0.010(0.25)
0.010(0.25)
0.010(0.25) |
0.008(0.20)
0.008(0.20)
0.008(0.20) |
0.006(0.15)
0.006(0.15)
0.006(0.15) |
0.004(0.10)
0.004(0.10)
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Notes : 1. Thickness is measured at any point across the width not less than 3/8 in. (9.5mm) from a side edge.
2. The specified thickness range captions noted below also apply when sheet is specified to a nominal thickness, and the above tolerances are divided equally over and under. |
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(2). Width Tolerances (Coils and / Cut Lengths, Over 12 in. (305 mm) in width, Not Resquared)
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Specified Width, in. (mm) |
Tolerances Over Specified Width, No Tolerance Under |
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in. |
mm |
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Over 12( 305) to 30 (762), inch.
Over 30 (762) to 48 (1,219), inch.
Over 48 (1,219) to 60 (1,524), inch.
Over 60 (1,524) to 80 (2,032), inch.
Over 80 (2,032) |
1/8
3/16
1/4
5/16
3/8 |
3.2
4.8
6.4
7.9
9.5 | |
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(3). Length Tolerances, (Cut Lengths Over 12 in. 305mm) in width, Not Resquared)
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Specified Width, in. (mm) |
Tolerances Over Specified Width, No Tolerance Under |
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in. |
mm |
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Over 12( 305) to 30 (762), inch.
Over 30 (762) to 60(1,524), inch.
Over 60(1,524) to 96 (2,438), inch.
Over 96(2,438) to 120 (3,048), inch.
Over 120(3,048) to 156 (3,962), inch
Over 156 (3,962) to 192 (4,877), inch.
Over 192 (4,877) to 240 (6,096), inch.
Over 240 (6,096) |
1/8
1/4
1/2
3/4
1
1 1/4
1 1/2
1 3/4 |
3.2
6.4
12.7
19.1
25.4
31.8
38.1
44.5 | | | |
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