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Hot rolled flat products made of high yield strength steels for cold forming

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 MPa a,e Tensile strength Rm MPa a,e Minimum percentage elongation at fracture A % a
Nominal thickness in mm 		Bending at 180o minimum mandrel diameter b,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.