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CSA G40.21 350W vs ASTM A572 Grade 50

Related Material — 67.9% match based on chemical composition and mechanical property overlap.

CSA G40.21 350W (CSA G40.21-13 (R2023)) and ASTM A572 Grade 50 (ASTM A572) 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 ASTM A572 Grade 50 is commonly used for high-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication. CSA G40.21 350W is defined under Canadian Standards Association (CSA), originating from Canada, while ASTM A572 Grade 50 is defined under ASTM International, originating from United States.

As per chemical composition, CSA G40.21 350W vs ASTM A572 Grade 50 is a 91.6% match. As per mechanical properties, the match is 20.7%. Combined, this makes them a related material overall at 67.9%.

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 400A CSA G40.21 260W IS 2062 E250A CSA G40.21 400W GOST 19281 09G2S ASTM A572 Gr.65 ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
91.6%
MECHANICAL MATCH
20.7%
OVERALL
67.9%
Specifications
Property CSA G40.21 350W ASTM A572 Grade 50
Standard CSA G40.21-13 (R2023) ASTM A572
Category Structural Steel Structural Steel
C (%) 0.23 max <=0.23
Mn (%) 0.50-1.50 <=1.35
Si (%) 0.15-0.40 <=0.40
P (%) 0.040 max <=0.040
S (%) 0.050 max <=0.050
Nb (%) Not specified <=0.05
V (%) Not specified <=0.15
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 ASTM A572 Grade 50
Tensile Strength 450-620 MPa 450 MPa min
Yield Strength 350 MPa min 345 MPa min
Elongation 20% min 18% min
Hardness 135-180 HB 137-187 HB
Typical Applications
CSA G40.21 350W
Used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications.
ASTM A572 Grade 50
High-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication
Key Differences
Can CSA G40.21 350W Be Substituted With ASTM A572 Grade 50?
CSA G40.21 350W and ASTM A572 Grade 50 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)
ASTM A572 Grade 50
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–4600 mm (110.24–181.1 in)
On M-EX Right Now
CSA G40.21 350W
2 active listings and RFQs →
ASTM A572 Grade 50
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 350W and ASTM A572 Grade 50?
ASTM A572 Grade 50 specifies Nb, V which are not specified for CSA G40.21 350W.
Can CSA G40.21 350W be substituted with ASTM A572 Grade 50?
CSA G40.21 350W and ASTM A572 Grade 50 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.