EN 10025-2:2019 S355K2 Steel: Specifications & Listings
EN 10025-2:2019 S355K2: S355K2: non-alloy structural steel, hot rolled flat and long products, impact tested at -20 deg C (steel number 1.0596). Specified in EN 10025-2:2019.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
P
S
Cu
<=0.24
<=0.55
<=1.60
<=0.025
<=0.025
<=0.55
Mechanical Properties
Tensile Strength
470-630 MPa
Yield Strength
>=355 MPa
Elongation
>=22%
Condition
Nominal thickness up to 16 mm (tensile for 3 to 100 mm, elongation for 3 to 40 mm), longitudinal test pieces
More data from EN 10025-2:2019
From the standard
Yield strength by thickness9 thickness ranges
Thickness (mm)
Yield strength ReH, min (MPa)
up to 16
355
over 16 to 40
345
over 40 to 63
335
over 63 to 80
325
over 80 to 100
315
over 100 to 150
295
over 150 to 200
285
over 200 to 250
275
over 250 to 400
265
For plate, strip and wide flats of width 600 mm or more the transverse direction applies.
Source: EN 10025-2:2019, Table 6
Tensile strength by thickness5 thickness ranges
Thickness (mm)
Tensile strength Rm (MPa)
under 3
510 to 680
3 to 100
470 to 630
over 100 to 150
450 to 600
over 150 to 250
450 to 600
over 250 to 400
450 to 600
Source: EN 10025-2:2019, Table 6
Elongation by thickness6 thickness ranges
Thickness (mm)
Elongation A, longitudinal, min (%)
Elongation A, transverse, min (%)
3 to 40
22
20
over 40 to 63
21
19
over 63 to 100
20
18
over 100 to 150
18
18
over 150 to 250
17
17
over 250 to 400
17
17
Gauge length 5.65 times square root of cross-section area; values for thin products under 3 mm (gauge length 80 mm) not shown.
Source: EN 10025-2:2019, Table 6 (concluded)
Impact energy KV2, longitudinal3 thickness ranges
Thickness (mm)
Test temperature (deg C)
KV2 min (J)
up to 150
-20
40 (d)
over 150 to 250
-20
33
over 250 to 400
-20
33
Longitudinal test pieces; subsized specimens reduced in proportion to area. (d): 40 J corresponds to 27 J at -30 deg C.
Source: EN 10025-2:2019, Table 8
Maximum carbon equivalent value (CEV)5 thickness ranges
Thickness (mm)
CEV, max (%)
up to 30
0.45
over 30 to 40
0.47
over 40 to 150
0.47
over 150 to 250
0.49
over 250 to 400
0.49
Based on heat analysis. For long products a CEV of 0.54 applies over 150 to 250 mm.
Source: EN 10025-2:2019, Table 5
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