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EN 10346 S350GD vs CSA G40.21 350W

Close Alternative — 73.5% match based on chemical composition and mechanical property overlap.

EN 10346 S350GD (EN 10346:2015) and CSA G40.21 350W (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 350W is commonly used for used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications.. EN 10346 S350GD is defined under European Standard (EN), originating from Europe, while CSA G40.21 350W is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, EN 10346 S350GD vs CSA G40.21 350W is a 93.5% match. As per mechanical properties, the match is 33.3%. Combined, this makes them a close alternative overall at 73.5%.

Frequently Compared With EN 10346 S350GD:
AS/NZS 1595 C350 CSA G40.21 400W ASTM A1008 SS Grade 50 GOST 19281 09G2S AS/NZS 3679.1 350 CSA G40.21 260W CSA G40.21 400A AS/NZS 3679.1 300 CSA G40.21 300W CSA G40.21 480W ASTM A283C ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
93.5%
MECHANICAL MATCH
33.3%
OVERALL
73.5%
Specifications
Property EN 10346 S350GD CSA G40.21 350W
Standard EN 10346:2015 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.20 0.23 max
Mn (%) <=1.50 0.50-1.50
Si (%) <=0.50 0.15-0.40
P (%) <=0.040 0.040 max
S (%) <=0.040 0.050 max
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 350W
Tensile Strength 420 MPa min 450-620 MPa
Yield Strength 350 MPa min 350 MPa min
Elongation 14% min 20% min
Hardness Not specified 135-180 HB
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 350W
Used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications.
Can EN 10346 S350GD Be Substituted With CSA G40.21 350W?
EN 10346 S350GD and CSA G40.21 350W 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 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 350W
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–3400 mm (106.3–133.86 in)
On M-EX Right Now
EN 10346 S350GD
2 active listings and RFQs →
CSA G40.21 350W
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10346 S350GD and CSA G40.21 350W?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10346 S350GD be substituted with CSA G40.21 350W?
EN 10346 S350GD and CSA G40.21 350W 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.