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EN 10025-3 S420JR vs CSA G40.21 400A

Close Alternative — 82.4% match based on chemical composition and mechanical property overlap.

EN 10025-3 S420JR (EN 10025-3:2019) and CSA G40.21 400A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. EN 10025-3 S420JR is typically used for used in bridges, heavy machinery frames, structural beams, offshore structures, and crane components., while CSA G40.21 400A is commonly used for atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed. EN 10025-3 S420JR is defined under European Standard (EN), originating from Europe, while CSA G40.21 400A is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, EN 10025-3 S420JR vs CSA G40.21 400A is a 91.3% match. As per mechanical properties, the match is 64.6%. Combined, this makes them a close alternative overall at 82.4%.

Frequently Compared With EN 10025-3 S420JR:
CSA G40.21 480W CSA G40.21 400W GOST 19281 09G2S CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 300W AS/NZS 3679.1 350 CSA G40.21 350W ASTM A1008 SS Grade 50 ASTM A572 Gr.65 ASTM A283C ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
91.3%
MECHANICAL MATCH
64.6%
OVERALL
82.4%
Specifications
Property EN 10025-3 S420JR CSA G40.21 400A
Standard EN 10025-3:2019 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) 0.20 max <=0.23
Si (%) 0.55 max <=0.40
Mn (%) 1.70 max <=1.60
P (%) 0.030 max <=0.035
S (%) 0.030 max <=0.035
N (%) 0.015 max Not specified
Cu (%) Not specified 0.20-0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10025-3 S420JR CSA G40.21 400A
Tensile Strength 520-680 MPa 520-670 MPa
Yield Strength 420 MPa min 400 MPa min
Elongation 17% min 17% min
Hardness 170-220 HB Not specified
Impact Not specified 27J at 0°C
Typical Applications
EN 10025-3 S420JR
Used in bridges, heavy machinery frames, structural beams, offshore structures, and crane components.
CSA G40.21 400A
Atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed
Key Differences
Can EN 10025-3 S420JR Be Substituted With CSA G40.21 400A?
EN 10025-3 S420JR and CSA G40.21 400A are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
EN 10025-3 S420JR
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3500–3900 mm (137.8–153.54 in)
CSA G40.21 400A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–4200 mm (110.24–165.35 in)
On M-EX Right Now
EN 10025-3 S420JR
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10025-3 S420JR and CSA G40.21 400A?
EN 10025-3 S420JR specifies N which is not specified for CSA G40.21 400A. CSA G40.21 400A specifies Cu which is not specified for EN 10025-3 S420JR.
Can EN 10025-3 S420JR be substituted with CSA G40.21 400A?
EN 10025-3 S420JR and CSA G40.21 400A are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.