Products Info / Carbon Steel / Flat / Coils/ Hot Rolled
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 |