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CSA G40.21 350W vs CSA G40.21 400A

Related Material — 66.1% match based on chemical composition and mechanical property overlap.

CSA G40.21 350W (CSA G40.21-13 (R2023)) and CSA G40.21 400A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. CSA G40.21 350W is typically used for used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications., 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. CSA G40.21 350W is defined under Canadian Standards Association (CSA), originating from Canada, while CSA G40.21 400A is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, CSA G40.21 350W vs CSA G40.21 400A is a 91.6% match. As per mechanical properties, the match is 15.2%. Combined, this makes them a related material overall at 66.1%.

Frequently Compared With CSA G40.21 350W:
AS/NZS 3679.1 350 IS 2062 E250B0 CSA G40.21 480W AS/NZS 1595 C350 AS/NZS 1595 C450 CSA G40.21 260W CSA G40.21 400W IS 2062 E250A GOST 19281 09G2S ASTM A572 Gr.65 ASTM A1008 SS Grade 80 ASTM A572 Grade 50
Match Breakdown
CHEMISTRY MATCH
91.6%
MECHANICAL MATCH
15.2%
OVERALL
66.1%
Specifications
Property CSA G40.21 350W CSA G40.21 400A
Standard CSA G40.21-13 (R2023) CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) 0.23 max <=0.23
Mn (%) 0.50-1.50 <=1.60
Si (%) 0.15-0.40 <=0.40
P (%) 0.040 max <=0.035
S (%) 0.050 max <=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 CSA G40.21 350W CSA G40.21 400A
Tensile Strength 450-620 MPa 520-670 MPa
Yield Strength 350 MPa min 400 MPa min
Elongation 20% min 17% min
Hardness 135-180 HB Not specified
Impact Not specified 27J at 0°C
Typical Applications
CSA G40.21 350W
Used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications.
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 CSA G40.21 350W Be Substituted With CSA G40.21 400A?
CSA G40.21 350W 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
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)
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
CSA G40.21 350W
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 350W and CSA G40.21 400A?
CSA G40.21 400A specifies Cu which is not specified for CSA G40.21 350W.
Can CSA G40.21 350W be substituted with CSA G40.21 400A?
CSA G40.21 350W 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.