Post Stock Login Register

EN 10346 S350GD vs CSA G40.21 400A

Related Material — 62.5% match based on chemical composition and mechanical property overlap.

EN 10346 S350GD (EN 10346:2015) and CSA G40.21 400A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. EN 10346 S350GD is typically used for continuous hot-dip galvanized structural steel strip/sheet; roll-formed and cold-formed structural sections, purlins, roofing and cladding requiring corrosion protection, 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 10346 S350GD 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 10346 S350GD vs CSA G40.21 400A is a 93.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 62.5%.

Frequently Compared With EN 10346 S350GD:
AS/NZS 1595 C350 ASTM A1008 SS Grade 50 CSA G40.21 400W GOST 19281 09G2S AS/NZS 3679.1 350 CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 300W CSA G40.21 350W CSA G40.21 480W ASTM A283C ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
93.8%
MECHANICAL MATCH
0%
OVERALL
62.5%
Specifications
Property EN 10346 S350GD CSA G40.21 400A
Standard EN 10346:2015 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.20 <=0.23
Mn (%) <=1.50 <=1.60
Si (%) <=0.50 <=0.40
P (%) <=0.040 <=0.035
S (%) <=0.040 <=0.035
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 10346 S350GD CSA G40.21 400A
Tensile Strength 420 MPa min 520-670 MPa
Yield Strength 350 MPa min 400 MPa min
Elongation 14% min 17% min
Impact Not specified 27J at 0°C
Typical Applications
EN 10346 S350GD
Continuous hot-dip galvanized structural steel strip/sheet; roll-formed and cold-formed structural sections, purlins, roofing and cladding requiring corrosion protection
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 10346 S350GD Be Substituted With CSA G40.21 400A?
EN 10346 S350GD and CSA G40.21 400A share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
EN 10346 S350GD
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–4100 mm (106.3–161.42 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 10346 S350GD
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10346 S350GD and CSA G40.21 400A?
CSA G40.21 400A specifies Cu which is not specified for EN 10346 S350GD.
Can EN 10346 S350GD be substituted with CSA G40.21 400A?
EN 10346 S350GD and CSA G40.21 400A share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.