Cold rolled steel strips, cold rolled steel products | TAKASAGO TEKKO K.K.

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Cold rolled steel products

Cold rolled steel strips

TypesFinishMechanical propertiesDimensional tolerancesAvailable manufacturing range

We offer various steel grades to meet a range of workability requirements for cold rolled steel sheets and strips (JIS G 3141).
For applications that require increased strength, we provide the higher carbon TAK20.

Types

Cold rolled steel sheets and strips (JIS G 3141)
Steel type symbol Skin-pass symbol Steel grade Chemical composition, %
C Si Mn P S
General
purpose		 SPCC S TAP8 ≤0.10 ≤0.08 0.20 - 0.50 ≤0.035 ≤0.035
8 TAK8 ≤0.08 ≤0.08 0.20 - 0.40 ≤0.025 ≤0.030
4 TAK10 0.08 - 0.12 ≤0.10 0.30 - 0.60 ≤0.030 ≤0.035
2 TAK12 0.10 - 0.14 ≤0.10 0.30 - 0.60 ≤0.030 ≤0.035
1 TAK20(*1) 0.18 - 0.23 ≤0.10 0.30 - 0.60 ≤0.025 ≤0.030
Drawing SPCD S TAP8 ≤0.10 ≤0.08 0.20 - 0.50 ≤0.035 ≤0.035
TAK8 ≤0.08 ≤0.08 0.20 - 0.40 ≤0.025 ≤0.030
Deep
drawing		 SPCE S TAK8 ≤0.08 ≤0.08 0.20 - 0.40 ≤0.025 ≤0.030

(*1)TAK20 cannot be applied to the SPCC-SB type specified in JIS G 3141.

JIS G 3141 standard
Steel type symbol Chemical composition, %
C Mn P S
SPCC ≤0.15 ≤0.60 ≤0.100 ≤0.035
SPCD ≤0.10 ≤0.50 ≤0.040 ≤0.035
SPCE ≤0.08 ≤0.45 ≤0.030 ≤0.030
SAE standard
Steel type symbol Chemical composition, %
C Mn P S
SAE1008 ≤0.10 0.30 - 0.50 ≤0.030 ≤0.05
SAE1010 0.08 - 0.13 0.30 - 0.60 ≤0.030 ≤0.05
SAE1012 0.10 - 0.15 0.30 - 0.60 ≤0.030 ≤0.05
SAE1020 0.18 - 0.23 0.30 - 0.60 ≤0.030 ≤0.05

Finish

Finishing category Symbol Remarks
Bright B Strips smooth-finished by smooth finished rolls

Mechanical properties

(1) Tensile strength, elongation, hardness, and bending tests of skin-passed materials (S)
Remarks Steel type Tensile strength, N/mm2 Elongation, % Hardness Bending test
Classification by nominal thickness, mm Takasago special standard
0.25≤ 0.25≤
<0.30		 0.30≤
<0.40		 0.40≤
<0.60		 0.60≤
<1.00		 1.0≤
<1.6		 1.6≤
<2.5		 2.5≤ HV HRBS
General
purpose		 SPCC-SB - - - - - - - - ≤115 ≤65 Bend angle: 180°
Inner radius: adhesion
Test method: JIS No. 3
Rolling direction
SPCCT-SB 270≤ 26≤ 29≤ 32≤ 34≤ 35≤ 36≤ 37≤ ≤115 ≤65
Drawing SPCD-SB 270≤ 28≤ 31≤ 34≤ 36≤ 37≤ 38≤ 39≤ ≤115 ≤65
Deep drawing SPCE-SB 270≤ 30≤ 33≤ 36≤ 38≤ 39≤ 40≤ 41≤ ≤115 ≤65

*No. 5 test pieces are to be used for tensile testing.

(2) Hardness and bending tests of hardened materials
Skin-pass
classification		 Skin-pass symbol Rockwell hardness Vickers hardness Bending test
HRBS HV Bending angle Inner radius Bending test piece
1/8 hardness 8 50 - 71 95 - 130 180° Adhesion JIS No. 3 test piece
Rolling direction
1/4 hardness 4 65 - 80 115 - 150 180° Half of thickness
1/2 hardness 2 74 - 89 135 - 185 180° Equal to thickness
Full hard 1 85≤ 170≤ - -

*Normally, the bending test is omitted.


Dimensional tolerances

(1) Thickness tolerances
Unit: mm
Classification by nominal thickness JIS G 3141 thickness tolerance B Takasago special standard

<160		 160≤
<250		 250≤
<400		 400≤
<450		 S standard SS standard U standard
0.25≤ <0.40 ±0.025 ±0.030 ±0.035 ±0.035 ±0.015 ±0.012 ±0.010
0.40≤ <0.60 ±0.035 ±0.040 ±0.040 ±0.040 ±0.020 ±0.016
0.60≤ <0.80 ±0.040 ±0.045 ±0.045 ±0.045 ±0.023 ±0.018 ±0.012
0.80≤ <1.00 ±0.04 ±0.05 ±0.05 ±0.05 ±0.026 ±0.020 ±0.014
1.00≤ <1.25 ±0.05 ±0.05 ±0.05 ±0.06 ±0.030 ±0.022 ±0.016
1.25≤ <1.60 ±0.05 ±0.06 ±0.06 ±0.06 ±0.035 ±0.025 ±0.018
1.60≤ <2.00 ±0.06 ±0.07 ±0.08 ±0.08 ±0.040 ±0.030 ±0.020
2.00≤ <2.50 ±0.07 ±0.08 ±0.08 ±0.09 ±0.050 ±0.035 ±0.030
2.50≤ <3.15 ±0.08 ±0.09 ±0.09 ±0.10 ±0.060 ±0.040 -
3.15≤ <4.00 ±0.09 ±0.10 ±0.10 ±0.11 ±0.070 ±0.050 -
4.00≤ <5.00 ±0.10 ±0.10 ±0.11 ±0.11 ±0.08 ±0.06 -
5.00≤ <6.00 ±0.12 ±0.12 ±0.13 ±0.13 ±0.09 ±0.07 -
6.00≤ ≤7.00 ±0.15 ±0.15 ±0.17 ±0.17 ±0.10 ±0.08 -

Notes
1. The thickness of a steel strip is typically measured at a point within 15 mm of the edges. For pieces less than 30 mm in width, thickness is measured at the center.
2. To order sizes not listed above, please feel free to contact us.
3. Costs are higher for products made to meet special standards (SS and U).

(2) Width tolerances
Unit: mm
Classification by nominal thickness JIS G 3141 width tolerances C
<160 160≤
<250		 250≤
<400		 400≤
<450
<0.60 ±0.15 ±0.20 ±0.25 ±0.30
0.60≤ <1.00 ±0.20 ±0.25 ±0.25 ±0.30
1.00≤ <1.60 ±0.20 ±0.30 ±0.30 ±0.40
1.60≤ <2.50 ±0.25 ±0.35 ±0.40 ±0.50
2.50≤ <4.00 ±0.30 ±0.40 ±0.45 ±0.50
4.00≤ <5.00 ±0.40 ±0.50 ±0.55 ±0.65
5.00≤ <6.00 ±0.50 ±0.60 ±0.65 ±0.80
6.00≤ ≤7.00 ±0.60 ±0.70 ±0.75 ±0.80
(3) Squareness

A/B ratio must be 1.0% or less.

(4) Length tolerances
Unit: mm
Classification by nominal thickness JIS G 3141 length tolerances A
800≤ - <2000 +10
0
2000≤ - <2800 +15
0
(5) Max. camber A
Unit: mm
Classification by nominal thickness Steel sheet in lengths of
less than 2,000		 Steel sheet or strip in lengths of
2,000 or more		 Notes
10≤ - <20 24 24 per any length of 2,000 Takasago special standard
20≤ - <30 16 16 per any length of 2,000
30≤ - <40 8 8 per any length of 2,000 JIS G 3141
40≤ - <450 4 4 per any length of 2,000

*Excluding SUY and SUYP


Available manufacturing range

Coils
Cut sheets
The available manufacturing range will differ according to the steel grade, finish, size, dimensional tolerances, and mechanical properties.
Contact us as for individual specifications.