S355J2

General Information

S355J2 is a micro alloyed structural steel suitable for e.g. mechanical engineering applications. The steel posess a good weldability with max CEV =0.47 for all variants. The steel may be delivered with a controlled silicon content for good galvanazing properties. Below, a number of closely related variants with various impact strength are presented.

Variant SB9813 is delivered with a closely controlled C-content for predictable properties and with a CEV value of max 0.41.

Variant S355J2(M) is a M-treated variant

Variant S355K2 and S355L4 both show good Impact toughness

Variant 520M is a M-steel variant of S355J2

Variant 550M is a drawn or peeled version of S355J2

For additional Heat Treatment Data, please visit the Heat Treatment Guide

M-Steel^®
The concept: Our M-Steel treatment can be applied to any steel grade. The basis for the concept is that non-metallic inclusions are modified and controlled with calcium treatment. These inclusions are modified in a way to maximize machinability and to improve transverse fatigue strength. In this way, a protective layer is formed on the cutting tool during machining that very significantly reduces the wear on the tool and increases the tool life. At every stage of the M-Steel production process the material is optimised to improve machinability, from raw material through melt, to casting, hot rolling and the final heat treatment. Individual delivery requirements can be met to supply your material in the best form for your machines in compliance with tight straightness and dimensional tolerances. M-Steel has a consistent machinability from cast to cast, meaning that machines can be run with fixed high cutting rates and predictable tool change intervals from one production run to another. Recent findings also show that the M-Steel effect is particularly pronounced in turning in very hard condition using Cubic Boron Nitride (CBN) inserts. Replacing traditional grinding of case- or induction-hardened surfaces with Hard Part Turning can mean very large cost savings, together with production lead time and quality improvements.

Similar designations

ASt 52, A52 FP, Q420q-D, 1501 Gr.224-460, A52 RBII, 1.0577, St52-3

Variant	Cast	Di	Weldability		C %	Si %	Mn %	P %	S %	Cr %	Ni %	Mo %	V %	Cu %	Al %
SB9813	CC		CEV 0.41_max	Min	0.13	0.15	1.00	-	-	-	-	-	0.030	-	0.025
Pcm 0.25_max	Max	0.18	0.25	1.30	0.025	0.025	0.15	0.25	0.07	0.120	0.30	-
S355J2(M)	CC		CEV 0.5_max	Min	-	-	-	-	0.020	-	-	-	-	-	-
Pcm 0.3_max	Max	0.20	0.55	1.60	0.035	0.040	-	-	-	0.150	-	-
S355K2	CC		CEV 0.45_max	Min	-	-	-	-	-	-	-	-	-	-	-
Pcm 0.3_max	Max	0.20	0.55	1.60	0.030	0.030	-	-	-	-	0.55	-
S355L4	CC		CEV 0.43_max	Min	-	-	-	-	-	-	-	-	-	-	-
Pcm 0.26_max	Max	0.16	0.55	1.60	0.030	0.030	-	-	-	-	0.40	-
520 M (2721, 2723)	CC	0.9	CEV 0.47_max	Min	0.05	0.05	1.00	0.000	0.020	-	-	-	0.030	-	-
Pcm 0.3_max	Max	0.20	0.50	1.50	0.025	0.040	-	-	-	0.100	0.55	-
550 M (2723)	CC	0.9	CEV 0.47_max	Min	0.05	0.05	1.00	0.000	0.020	-	-	-	0.030	0.00	-
Pcm 0.3_max	Max	0.20	0.50	1.50	0.025	0.040	-	-	-	0.100	0.55	-
S355J2 EN10025-2:2019	Std		CEV 0.47_max	Min	-	-	-	-	-	-	-	-	-	-	-
Pcm 0.35_max	Max	0.20	0.55	1.60	0.030	0.030	-	-	-	-	0.55	-

Variant

Cast

Weldability

C %

Si %

Mn %

P %

S %

Cr %

Ni %

Mo %

V %

Cu %

Al %

SB9813

CEV 0.41_max

Min

0.13

0.15

1.00

0.030

0.025

Pcm 0.25_max

Max

0.18

0.25

1.30

0.025

0.15

0.25

0.07

0.120

0.30

S355J2(M)

CEV 0.5_max

Min

0.020

Pcm 0.3_max

Max

0.20

0.55

1.60

0.035

0.040

0.150

S355K2

CEV 0.45_max

Min

Pcm 0.3_max

Max

0.20

0.55

1.60

0.030

0.55

S355L4

CEV 0.43_max

Min

Pcm 0.26_max

Max

0.16

0.55

1.60

0.030

0.40

520 M (2721, 2723)

0.9

CEV 0.47_max

Min

0.05

1.00

0.000

0.020

0.030

Pcm 0.3_max

Max

0.20

0.50

1.50

0.025

0.040

0.100

0.55

550 M (2723)

0.9

CEV 0.47_max

Min

0.05

1.00

0.000

0.020

0.030

0.00

Pcm 0.3_max

Max

0.20

0.50

1.50

0.025

0.040

0.100

0.55

S355J2 EN10025-2:2019

Std

CEV 0.47_max

Min

Pcm 0.35_max

Max

0.20

0.55

1.60

0.030

0.55

Variant	Condition	Format	Dimension [mm]	Yield strength min [MPa]	Tensile strength [MPa]	Elongation A₅ [%]	Hardness	Impact (ISO-V) strength_min
Rp_0.2 * R_eh, ** R_el
SB9813	+AR		< 16	355**	520-600	25	160-180 HB	-20 °C 40 J (long)
	16 < 40	345**	520-600	25	160-180 HB	-20 °C 40 J (long)
S355J2(M)	+AR	All formats	< 16	355**	490-630	22	150-190 HB	-20 °C 27 J (long)
All formats	17 < 40	345**	490-630	22	150-190 HB	-20 °C 27 J (long)
All formats	41 < 63	335**	490-630	21	150-190 HB	-20 °C 27 J (long)
	64 < 80	325**	490-630	30	150-190 HB	-20 °C 27 J (long)
S355K2	+AR		< 16	355**	470-630	22	140-190 HB	-20 °C 40 J (long)
	16 < 40	345**	470-630	22	140-190 HB	-20 °C 40 J (long)
	40 < 63	335**	470-630	21	140-190 HB	-20 °C 40 J (long)
S355L4	+AR		< 16	355**	470-630	22	140-190 HB	-40 °C 60 J (long)
	16 < 40	345**	470-630	22	140-190 HB	-40 °C 60 J (long)
	40 < 63	335**	470-630	21	140-190 HB	-40 °C 60 J (long)
	63 < 80	325**	470-630	20	140-190 HB	-40 °C 60 J (long)
	80 < 100	315**	470-630	20	140-190 HB	-40 °C 60 J (long)
520 M (2721, 2723)	+AR		25 < 40	400*	520-630	22	< 200 HB	-20 °C 40 J (long)
Round bar	40 < 63	390*	520-630	22	< 200 HB	-20 °C 40 J (long)
Round bar	63 < 100	380*	520-630	21	< 200 HB	-20 °C 40 J (long)
Round bar	100 < 200	350*	500-600	18	< 200 HB	-20 °C 27 J (long)
+N	Round bar	25 < 40	345*	470-630	25	< 200 HB	-40 °C 40 J (long)
Round bar	40 < 63	335*	470-630	24	< 200 HB	-40 °C 40 J (long)
Round bar	63 < 80	325*	470-630	23	< 200 HB	-40 °C 40 J (long)
Round bar	80 < 100	315*	470-630	23	< 200 HB	-40 °C 40 J (long)
Round bar	100 < 150	295*	450-600	21	< 200 HB	-40 °C 40 J (long)
Round bar	150 < 200	285*	450-600	20	< 200 HB	-40 °C 40 J (long)
550 M (2723)	+C	Round bar	22 < 55	500*	550-750	12	< 220 HB	20 °C 27 J (long)
+SH	Round bar	55 < 70	380*	490-630	22	< 200 HB	-20 °C 27 J (long)
Round bar	70 < 120	350	490-630	20	< 200 HB	-20 °C 27 J (long)
S355J2 EN10025-2:2019	+AR		< 16	355**	470-630	22	140-190 HB	-20 °C 27 J (long)
	16 < 40	345**	470-630	22	140-190 HB	-20 °C 27 J (long)
	40 < 63	335**	470-630	21	140-190 HB	-20 °C 27 J (long)
	63 < 80	325**	470-630	20	140-190 HB	-20 °C 27 J (long)
	80 < 100	315**	470-630	20	140-190 HB	-20 °C 27 J (long)

Variant

Condition

Format

Dimension [mm]

Yield strength min [MPa]

Tensile strength [MPa]

Elongation A₅ [%]

Hardness

Impact (ISO-V) strength_min

Rp_0.2 * R_eh, ** R_el

SB9813

+AR

< 16

355**

520-600

160-180 HB

-20 °C 40 J (long)

16 < 40

345**

520-600

160-180 HB

-20 °C 40 J (long)

S355J2(M)

+AR

All formats

< 16

355**

490-630

150-190 HB

-20 °C 27 J (long)

All formats

17 < 40

345**

490-630

150-190 HB

-20 °C 27 J (long)

All formats

41 < 63

335**

490-630

150-190 HB

-20 °C 27 J (long)

64 < 80

325**

490-630

150-190 HB

-20 °C 27 J (long)

S355K2

+AR

< 16

355**

470-630

140-190 HB

-20 °C 40 J (long)

16 < 40

345**

470-630

140-190 HB

-20 °C 40 J (long)

40 < 63

335**

470-630

140-190 HB

-20 °C 40 J (long)

S355L4

+AR

< 16

355**

470-630

140-190 HB

-40 °C 60 J (long)

16 < 40

345**

470-630

140-190 HB

-40 °C 60 J (long)

40 < 63

335**

470-630

140-190 HB

-40 °C 60 J (long)

63 < 80

325**

470-630

140-190 HB

-40 °C 60 J (long)

80 < 100

315**

470-630

140-190 HB

-40 °C 60 J (long)

520 M (2721, 2723)

+AR

25 < 40

400*

520-630

< 200 HB

-20 °C 40 J (long)

Round bar

40 < 63

390*

520-630

< 200 HB

-20 °C 40 J (long)

Round bar

63 < 100

380*

520-630

< 200 HB

-20 °C 40 J (long)

Round bar

100 < 200

350*

500-600

< 200 HB

-20 °C 27 J (long)

Round bar

25 < 40

345*

470-630

< 200 HB

-40 °C 40 J (long)

Round bar

40 < 63

335*

470-630

< 200 HB

-40 °C 40 J (long)

Round bar

63 < 80

325*

470-630

< 200 HB

-40 °C 40 J (long)

Round bar

80 < 100

315*

470-630

< 200 HB

-40 °C 40 J (long)

Round bar

100 < 150

295*

450-600

< 200 HB

-40 °C 40 J (long)

Round bar

150 < 200

285*

450-600

< 200 HB

-40 °C 40 J (long)

550 M (2723)

Round bar

22 < 55

500*

550-750

< 220 HB

20 °C 27 J (long)

+SH

Round bar

55 < 70

380*

490-630

< 200 HB

-20 °C 27 J (long)

Round bar

70 < 120

350

490-630

< 200 HB

-20 °C 27 J (long)

S355J2 EN10025-2:2019

+AR

< 16

355**

470-630

140-190 HB

-20 °C 27 J (long)

16 < 40

345**

470-630

140-190 HB

-20 °C 27 J (long)

40 < 63

335**

470-630

140-190 HB

-20 °C 27 J (long)

63 < 80

325**

470-630

140-190 HB

-20 °C 27 J (long)

80 < 100

315**

470-630

140-190 HB

-20 °C 27 J (long)

	Temperature °C
MS	400
AC1	720
AC3	815

Temperature °C

400

AC1

720

AC3

815

Youngs module (GPa)	Poisson´s ratio (-)	Shear module (GPa)	Density (kg/m3)
210	0.3	80	7800
Average CTE 20-300°C (µm/m°K)	Specific heat capacity 50/100°C (J/kg°K)	Thermal conductivity Ambient temperature (W/m°K)	Electrical resistivityAmbient temperature (µΩm)
12	460 - 480	40 - 45	0.20 - 0.25

Youngs module (GPa)

Poisson´s ratio (-)

Shear module (GPa)

Density (kg/m3)

210

0.3

7800

Average CTE 20-300°C (µm/m°K)

Specific heat capacity 50/100°C (J/kg°K)

Thermal conductivity Ambient temperature (W/m°K)

Electrical resistivityAmbient temperature (µΩm)

460 - 480

40 - 45

0.20 - 0.25

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S355J2

General Information

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