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

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

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

As per chemical composition, CSA G40.21 400A vs EN 10025-3 S420JR 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 CSA G40.21 400A:
CSA G40.21 480W CSA G40.21 350W ASTM A1008 SS Grade 50 AS/NZS 1595 C450 ASTM A1008 SS Grade 80 AS/NZS 1595 C350 CSA G40.21 260W CSA G40.21 300W IS 2062 E250A CSA G40.21 400W ASTM A572 Grade 50 IS 2062 E250B0
Match Breakdown
CHEMISTRY MATCH
91.3%
MECHANICAL MATCH
64.6%
OVERALL
82.4%
Specifications
Property CSA G40.21 400A EN 10025-3 S420JR
Standard CSA G40.21-13 (R2023) EN 10025-3:2019
Category Structural Steel Structural Steel
C (%) <=0.23 0.20 max
Mn (%) <=1.60 1.70 max
Si (%) <=0.40 0.55 max
P (%) <=0.035 0.030 max
S (%) <=0.035 0.030 max
Cu (%) 0.20-0.40 Not specified
N (%) Not specified 0.015 max
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property CSA G40.21 400A EN 10025-3 S420JR
Tensile Strength 520-670 MPa 520-680 MPa
Yield Strength 400 MPa min 420 MPa min
Elongation 17% min 17% min
Impact 27J at 0°C Not specified
Hardness Not specified 170-220 HB
Typical Applications
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
EN 10025-3 S420JR
Used in bridges, heavy machinery frames, structural beams, offshore structures, and crane components.
Key Differences
Can CSA G40.21 400A Be Substituted With EN 10025-3 S420JR?
CSA G40.21 400A and EN 10025-3 S420JR 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
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)
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)
On M-EX Right Now
CSA G40.21 400A
2 active listings and RFQs →
EN 10025-3 S420JR
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 400A and EN 10025-3 S420JR?
CSA G40.21 400A specifies Cu which is not specified for EN 10025-3 S420JR. EN 10025-3 S420JR specifies N which is not specified for CSA G40.21 400A.
Can CSA G40.21 400A be substituted with EN 10025-3 S420JR?
CSA G40.21 400A and EN 10025-3 S420JR 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.