Pickling is a metal surface treatment process that utilizes acids to remove oxide layers and impurities from steel surfaces. This enhances the steel’s surface quality, improving its paint adhesion and welding capabilities.It is widely used in various industries, such as automotive and construction, to ensure high-quality material performance.
Special steels produced by combining controlled rolling with heat treatment. It enhances their strength and ductility, making them ideal for various demanding applications. The key advantage is the improved mechanical properties achieved through microstructural control, which results in a more efficient and cost-effective material suitable for industries like construction and automotive.
| Designation of steel grade | C | Mn | Si | P | S | AI total | Nb | V | Ti | Mo | B | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel Name | Steel Number | % Max | % Max | % Max | % Max | % Max | % Min | % Max | % Max | % Max | % Max | % Max |
| S315MC | 1.0972 | 0.12 | 1.30 | 0.50 | 0.025 | 0.020b | 0.015 | 0.09a | 0.20a | 0.15a | – | – |
| S355MC | 1.0976 | 0.12 | 1.50 | 0.50 | 0.025 | 0.020b | 0.015 | 0.09a | 0.20a | 0.15a | – | – |
| S420MC | 1.0980 | 0.12 | 1.60 | 0.50 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.15a | – | – |
| S460MC | 1.0982 | 0.12 | 1.60 | 0.50 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.15a | – | – |
| S500MC | 1.0984 | 0.12 | 1.70 | 0.50 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.15a | – | – |
| S550MC | 1.0986 | 0.12 | 1.80 | 0.50 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.15a | – | – |
| S600MC | 1.8969 | 0.12 | 1.90 | 0.50 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.22a | 0.50 | 0.005 |
| S650MC | 1.8976 | 0.12 | 2.00 | 0.60 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.22a | 0.50 | 0.005 |
| S700MC | 1.8974 | 0.12 | 2.10 | 0.60 | 0.025 | 0.015b | 0.015 | 0.09a | 0.20a | 0.22a | 0.50 | 0.005 |
| S900MC | 1.8798 | 0.20 | 2.20 | 0.60 | 0.025 | 0.010 | 0.015 | 0.09a | 0.20 | 0.25 | 1.00 | 0.005 |
| S960MC | 1.8799 | 0.20 | 2.20 | 0.60 | 0.025 | 0.010 | 0.015 | 0.09a | 0.20 | 0.25 | 1.00 | 0.005 |
a The sum of Nb, V and Ti shall be max. 0.22%
b If agreed at the time of the order the sulphur content shall be max. 0.010% (ladle analysis).
See Clause 11, option 12).
| Designation of steel grade |
Minimum yield strength ReH MPaa,e |
Tensile strength Rm MPaa,e |
Minimum percentage elongation at fracture A %a Nominal thickness in mm |
Bending at 180o minimum mandrel diameterb,c |
||
|---|---|---|---|---|---|---|
| Steel Name | Steel Number |
<3 LO=80 |
≥3 LO=5.65√So |
|||
| S315MC | 1.0972 | 315 | 390-510 | 20 | 24 | 0t |
| S355MC | 1.0976 | 355 | 430-550 | 19 | 23 | 0.5t |
| S420MC | 1.0980 | 420 | 480-620 | 16 | 19 | 0.5t |
| S460MC | 1.0982 | 460 | 520-670 | 14 | 17 | 1t |
| S500MC | 1.0984 | 500 | 550-700 | 12 | 14 | 1t |
| S550MC | 1.0986 | 550 | 600-760 | 12 | 14 | 1.5t |
| S600MC | 1.8969 | 600 | 650-820 | 11 | 13 | 1.5t |
| S650MC | 1.8976 | 650d | 700-880 | 10 | 12 | 2t |
| S700MC | 1.8974 | 700d | 750-950 | 10 | 12 | 2t |
| S900MC | 1.8798 | 900 | 930-1 200 | 7 | 8 | 8tf |
| S960MC | 1.8799 | 960 | 980-1 250 | 6 | 7 | 9tg |
a The values for the tensile test apply to longitudinal test pieces.
b The values for the bend test apply to transverse test pieces.
c t=thickness in mm of test piece for bend test
d For thicknesses > 8mm the minimum yield strength can be 20 MPae lower.
e 1MPa=1N/mm2
f Bending at 90°, for thicknesses less than 3 mm minimum mandrel diameter 7t.
g Bending at 90°, for thicknesses less than 3 mm minimum mandrel diameter 8t.
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