Microalloyed high strength steels

Standards
EuropeMaterial no.DFGBUSA
EN 10149-2 SEW 092NFA 36-231BS 1449 Sec. 1.4ASTM A 1011/ SAE J 1392
S315MC1.0972-E 315 DHR 40F30045 XLK
 1.0974QStE 340 TM--HSLAS-F Gr. 50
[340]/050 XLK
S355MC1.0976-E 355 DHR 43F35-
 1.0978QStE 380 TM-HR 46F40-
S420MC1.0980QStE 420 TME 420 D-HSLAS-F Gr. 60
[410]/060 XLK
S460MC1.0982QStE 460 TM-HR 50F45-
S500MC1.0984QStE 500 TME 490 D-HSLAS-F Gr. 70
[480]/070
S550MC1.0986QStE 550 TME 560 D-HSLAS-F Gr. 80
[550]/080 XLK
S600MC1.8969-E 620 D--
S650MC1.8976----
S700MC1.8974-E 690 D--
Feasibility range
GradeThicknessWidth
 min.max.max.
S315MC1121575
S355MC1.2121575
S420MC1.38121575
S460MC1.8121575
S500MC1.581575
S550MC271575
S600MC2.541300
S650MC2.541300
S700MC2.541300


1) For thicknesses up to 2.5 mm maximum width is 1520 mm
2) Feasibility on the specific combination of thickness and width must be verified in the order phase

Chemical composition
GradeCSiMnPSAltotalMoNb2)V2)Ti2)B
 max.max.max.max.max.min.max.max.max.max.max.
S315MC0.120.501.300.0250.0200.015-0.090.200.15-
S355MC0.120.501.500.0250.0200.015-0.090.200.15-
S420MC0.120.501.600.0250.0150.015-0.090.200.15-
S460MC0.120.501.600.0250.0150.015-0.090.200.15-
S500MC0.120.501.700.0250.0150.015-0.090.200.15-
S550MC0.120.501.800.0250.0150.015-0.090.200.15-
S600MC0.120.501.900.0250.0150.0150.500.090.200.220.005
S650MC0.120.602.000.0250.0150.0150.500.090.200.220.005
S700MC0.120.602.100.0250.0150.0150.500.090.200.220.005


1) The total of Nb, V and Ti must not exceed 0.22 %.

Mechanical properties
GradeYield point min.Tensile strengthElongation min [%]1)
 MPaMPaL0 = 80 mmL0 = 5,65 √S0
   s < 3s ≥3
S315MC315390 - 5102024
S355MC355430 - 5501923
S420MC420480 - 6201619
S460MC460520 - 6701417
S500MC500550 - 7001214
S550MC550600 - 7601214
S600MC600650 - 8201113
S650MC6502)700 - 8801012
S700MC7002)750 - 9501012


1) s = nominal thickness in mm
2) In the case of thickness > 8 mm, tensile strength values must be lowered 20 MP

Resilience
If agreed in order, resilience must be verified for products with nominal thickness ≥ 6mm.
Bending radii
GradeLower bending radii recommended 1)
 s ≤ 33 < s ≤ 6s > 6
S315MC0.25 s0.5 s1.0 s
S355MC0.25 s0.5 s1.0 s
S420MC0.5 s1.0 s1.5 s
S460MC0.5 s1.0 s1.5 s
S500MC1.0 s1.5 s2.0 s
S550MC1.0 s1.5 s2.0 s
S600MC1.0 s1.5 s2.0 s
S650MC1.5 s2.0 s2.5 s
S700MC1.5 s2.0 s2.5 s


1) s = nominal thickness in mm