Hot-rolled Cold Forming Sheet

 
Symbol
Chemical Composition %
Mechanical Properties
180o Cold Bending Test
 
Foreign Standard Adopted
 
Method of deoxid-
ation
C
<
Mn
<
P
<
S
<
Tensile Strength MPa
>
Elongation at The Following Thickness (mm)
%
Lo = 50mm bo = 25mm
Bending Diameter at The following Thickness a (mm)
<1.6
1.6~<2.0
2.0~<2.5
2.5~<3.2
3.2~4.0
>4.0
<3.2
>3.2
SPHC
Option
0.15
0.60
0.035
0.035
270
>27
>29
>29
>29
>31
>31
d=0
d=1a
JIS G 3131
SPHD
Option
0.10
0.50
0.035
0.035
270
>30
>32
> 33
>35
>37
>39
d=0
d=0
SPHE
Al Killed
0.10
0.50
0.030
0.035
270
>31
>33
>35
>37
>39
>41
d=0
d=0

JIS 3132        Symbols of Grades

SPHT 1 1.2 or over up to and incl.13
SPHT 2
SPHT 3  1.6 or over up to and incl.13
SPHT 4

Chemical Composition

Grade symbol  C  Si Mn P S
SPHT 1 0.10  max  0.35 max 0.50 max 0.040 max 0.040  max
SPHT 2 0.18 max 0.35 0.60 max 0.040 max 0.040 max
SPHT 3 0.25 max 0.35 0.30 to 0.90 0.040 max 0.040 max
SPHT 4 0.30 max 0.35 0.30 to 1.00 0.040 max 0.040 max

Note : The maximum silicon content may be modified to 0.04 % max. by agreement between the purchaser and the supplier.

Mechanical Properties (Applicable  on and after Jan 1, 1991)

Grade Symbol Tensile Strength

N/mm2

 Elongation % Tensile test piece Bendability

 
1.2 mm or over to and excl. 1.6 mm in thickness 1.6 mm or over to and excl. 3.0 mm in thickness 3.0 mm or over to and excl. 6.0 mm in thickness 6.0 mm or over to and excl. 13 mm in thickness Bending angle (Degree) Inside radius
3.0 mm or under in thickness Over 3.0 mm up to and incl. 13 mm in thickness Test Piece
SPHT1 270 min 30 min 32 min 35 min 37 min N0. 5 taken in rolling direction 180 Flat on itself Thickness x 0.5 No. 5 taken in rolling direction
SPHT2 340 min 25 min 27 min 30 min 32 min 180 Thickness x 1.0 Thickness x 1.5
SPHT3 410 min 20 min 22 min 25 min 27 min 180 Thickness x 1.5 Thickness x 2.0
SPHT4 490 min 15 min 18 min 20 min 27 min 180 Thickness x 1.5 Thickness x 2.0

Tolerance on thickness (Applicable to SPHT1, SPHT2,SPHT3)

Width/Thickness  Under 1200 1200 or over to and excl. 1500 1500 or over to and excl. 1800 1800 or over to and excl. 2300
Under 1.60 +/- 0.14 +/- 0.15 +/- 0.16  
1.60 or over to and excl.2.00 +/- 0.16 +/- 0.17 +/- 0.18 +/- 0.21
2.00 or over to and excl.2.50 +/- 0.17 +/- 0.19 +/- 0.21 +/- 0.25
2.50 or over to and excl.3.15 +/- 0.19 +/- 0.21 +/- 0.24 +/- 0.26
3.15 or over to and excl.4.00 +/- 0.21 +/- 0.23 +/- 0.26 +/- 0.27
4.00 or over to and excl.5.00 +/- 0.24 +/- 0.26 +/- 0.28 +/- 0.29
5.00 or over to and excl.6.00 +/- 0.26 +/- 0.28 +/- 0.29 +/- 0.31
6.00 or over to and excl.8.00 +/- 0.29 +/- 0.30 +/- 0.31 +/- 0.35
8.00 or over to and excl.10.00 +/- 0.32 +/- 0.33 +/- 0.34 +/- 0.40
10.00 or over to and excl.12.5 +/- 0.35 +/- 0.36 +/- 0.37 +/- 0.45
12.5 or over to and excl.13.0 +/- 0.38 +/- 0.39 +/- 0.40 +/- 0.50

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