EN 10025-5:2019 S420K2W Steel: Specifications & Listings

EN 10025-5:2019 S420K2W: S420K2W: structural steel with improved atmospheric corrosion resistance (weathering steel). Specified in EN 10025-5:2019.

Category: Structural Steel (Corten / Weathering)
Grade Details
GradeEN 10025-5:2019 S420K2W
Standard EN 10025-5:2019
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
EN 10025-5 S420J2W EN 10025-5:2019 Strong Match
EN 10025-5 S420J4W EN 10025-5:2019 Strong Match
EN 10025-5 S420J5W EN 10025-5:2019 Strong Match
EN 10025-5 S420J0W EN 10025-5:2019 Strong Match
EN 10025-5 S460J2W EN 10025-5:2019 Close Alternative
EN 10025-5 S460K2W EN 10025-5:2019 Close Alternative
EN 10025-5 S460J4W EN 10025-5:2019 Close Alternative
EN 10025-5 S460J5W EN 10025-5:2019 Close Alternative
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 N Cr Cu
<=0.20 <=0.65 0.50-1.35 <=0.030 <=0.030 <=0.025 0.40-0.80 0.25-0.55
Mechanical Properties
Tensile Strength 500-660 MPa
Yield Strength >=420 MPa
Elongation >=19%
Condition Nominal thickness up to 16 mm for yield, 3 to 100 mm for tensile, 3 to 40 mm for elongation (Lo = 5.65 sqrt(S0), longitudinal); transverse values are lower, see blocks

More data from EN 10025-5:2019

From the standard
Yield strength by thickness 6 thickness ranges
Nominal thickness (mm)Yield strength ReH, min (MPa)
up to 16420
over 16 to 40400
over 40 to 63390
over 63 to 80380
over 80 to 100370
over 100 to 150365
For plate, strip and wide flats of width 600 mm and over the values apply transverse to the rolling direction; for other products parallel.
Source: EN 10025-5:2019, Table 4
Tensile strength by thickness 3 thickness ranges
Nominal thickness (mm)Tensile strength Rm (MPa)
under 3520 to 680
3 to 100500 to 660
over 100 to 150460 to 620
Source: EN 10025-5:2019, Table 4
Elongation by thickness and test piece orientation minimum elongation after fracture, %
Test piece orientationLo = 80 mm: over 1.5 to 2 mmLo = 80 mm: over 2 to 2.5 mmLo = 80 mm: over 2.5 to under 3 mmLo = 5.65 sqrt(S0): 3 to 40 mmLo = 5.65 sqrt(S0): over 40 to 63 mmLo = 5.65 sqrt(S0): over 63 to 100 mmLo = 5.65 sqrt(S0): over 100 to 150 mm
Longitudinal (l)15151519181716
Transverse (t)13131317161514
Transverse values apply to plate, strip and wide flats of width 600 mm and over.
Source: EN 10025-5:2019, Table 4
Impact energy KV2 Charpy V-notch
Test temperature
-20 deg C
Minimum energy KV2, longitudinal
40 J
40 J corresponds to 27 J at -30 deg C. Values reduced in direct proportion for subsized specimens.
Source: EN 10025-5:2019, Table 5

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