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ASTM A572/A572M:2018 Grade 55 Steel: Specifications & Listings

ASTM A572/A572M:2018 Grade 55: Grade 55: high-strength low-alloy columbium-vanadium structural steel. Specified in ASTM A572/A572M:2018.

Category: Structural Steel
Grade Details
GradeASTM A572/A572M:2018 Grade 55
Standard ASTM A572/A572M:2018
ApplicationsRiveted, bolted or welded structures
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A572/A572M Grade 55 ASTM A572/A572M:2021 Strong Match
AS/NZS 3678 Grade 450 AS/NZS 3678:2016 Strong Match
AS/NZS Grade 500 AS/NZS 3597:2008 Strong Match
CSA G40.21 400A CSA G40.21-13 (R2023) Close Alternative
EN 10025-3 S420JR EN 10025-3:2019 Close Alternative
EN 10025-3 S460JR EN 10025-3:2019 Close Alternative
EN 10025-3 S460 EN 10025-3:2019 Close Alternative
EN 10025-2 S460JR EN 10025-2:2019 Related Material
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn P S Si
<=0.25 <=1.35 <=0.030 <=0.030 <=0.40
Mechanical Properties
Tensile Strength >=485 MPa
Yield Strength >=380 MPa
Elongation >=17%
Condition Tension test per Table 4; one set of minimum values for all product thicknesses; Elongation is in 200 mm gauge length, 50 mm values in the tensile block

More data from ASTM A572/A572M:2018

From the standard
Tensile requirements 4 properties
Yield point, min
380 MPa
Tensile strength, min
485 MPa
Elongation in 200 mm, min
17%
Elongation in 50 mm, min
20%
Elongation not required for floor plate; reduced for plates wider than 600 mm.
Source: ASTM A572/A572M:2018, Table 4

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