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Cold rolled coil/sheet
- Specification: 08YU/ 08KP, JIS G3141 SPCC-SD/ 1B, SPEN-SD (Japanese standards)
- Size: thickness: 0.196mm – 4.5mm
- Applications: For making pipes, GI coil / sheet, spare parts for automobiles/ motobikes, other assessories for machical use.
| Description |
Specification |
Description
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Cold rolled steel coil JIS G3141
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1. CHEMICAL COMPOSITION
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Symbol of grace
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C
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Mn
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P
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S
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SPCC
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0.12 Max
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0.50 Max
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0.040 Max
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0.045 Max
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SPCD
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0.10 Max
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0.45 Max
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0.035 Max
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0.035 Max
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SPCE
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0.08 Max
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0.40 Max
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0.030 Max
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0.030 Max
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2. MECHANICAL PROPERTY
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Symbol of quanlity
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Tensile strength N/m2
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Elongation %
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Tensile test piece
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Descrimination according to nominal thickness
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... < 0.25
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0.25 ≤...< 0.4
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0.4 ≤...< 0.6
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0.6 ≤...< 1.0
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1.0 ≤...< 1.6
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1.6 ≤...< 2.5
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... ≥ 2.5
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SPCC
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270 min
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32 min
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34 min
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36 min
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37 min
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38 min
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39 min
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No. 5, in rolling direction
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SPCD
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270 min
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34 min
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36 min
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38 min
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39 min
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40 min
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41 min
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SPCE
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270 min
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36 min
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38 min
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40 min
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41 min
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42min
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43 min
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3. HARDNESS
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Temper grade
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Symbol of temper grade
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Hardness
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HRB
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HV
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1/8 hard
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8
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50 to 71
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95 to130
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1/4 hard
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4
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65 to 80
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115 to 150
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1/2 hard
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2
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74 to 89
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135 to 185
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Full hard
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1
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85 min
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170 min
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As-annealed
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A
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57 max
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105 max
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Standard temper grade
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S
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65 max
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115 max
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TABLE 3. SURFACE FINISH
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Surface finish
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Symbol of surface finish
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Remarks
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Dull finish
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D
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A matt finish produced with a roll rounghened its surface mechangically
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Bright finish
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B
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A smooth finish produced with a roll finish its surface smoothly
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4. THICKNESS TOLERANCES
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Descrimination according to nominal thickness
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Descrimination according to nominal width
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... < 630
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630 ≤...< 1000
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100 ≤...< 1250
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1250 ≤...< 1600
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... ≥ 1600
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... < 0.25
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± 0.03
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± 0.03
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± 0.03
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-
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-
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0.25 ≤...< 0.40
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± 0.04
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± 0.04
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± 0.04
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-
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-
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0.40 ≤...< 0.60
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± 0.05
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± 0.05
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± 0.05
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± 0.06
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-
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0.40 ≤...< 0.80
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± 0.06
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± 0.06
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± 0.06
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± 0.06
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± 0.07
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0.80 ≤...< 1.00
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± 0.06
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± 0.06
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± 0.07
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± 0.08
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± 0.09
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1.00 ≤...< 1.25
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± 0.07
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± 0.07
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± 0.08
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± 0.09
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± 0.11
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1.25 ≤...< 1.60
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± 0.08
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± 0.09
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± 0.10
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± 0.11
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± 0.13
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1.60 ≤...< 2.00
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± 0.10
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± 0.11
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± 0.12
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± 0.13
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± 0.15
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5. WIDTH TOLERANCES
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Class A
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Class B
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Descrimination according to nominal width
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... < 1250
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... > 1250
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+ 7
0
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+ 10
0
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Descrimination according to nominal width
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... < 1250
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... > 1250
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+ 3
0
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+ 4
0
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7. FLAT TOLERANCES
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Class A
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Class B
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Descrimination according to nominal width
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Classification of shape
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Bow, wave
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Edge wave
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Centre buckle
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... < 1000
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12
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8
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6
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1000 ≤...< 1250
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15
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9
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8
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1250 ≤...< 1600
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15
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11
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8
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... > 1600
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20
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13
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9
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Descrimination according to nominal width
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Classification of shape
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Bow, wave
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Edge wave
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Centre buckle
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... < 1000
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12
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8
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6
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1000 ≤...< 1250
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15
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9
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8
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1250 ≤...< 1600
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15
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11
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8
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... > 1600
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20
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13
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9
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