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CSA G40.21 300W vs ASTM A572 Grade 50

Related Material — 60.4% match based on chemical composition and mechanical property overlap.

CSA G40.21 300W (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 300W is typically used for structural fabrication,bridges,buildings,machinery frames,general construction,welded structures, 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 300W 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 300W vs ASTM A572 Grade 50 is a 90.6% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 60.4%.

Frequently Compared With CSA G40.21 300W:
CSA G40.21 400W AS/NZS 1595 C350 ASTM A1008 SS Grade 50 CSA G40.21 480W GOST 19281 09G2S CSA G40.21 400A CSA G40.21 260W AS/NZS 1595 C450 IS 2062 E250A ASTM A572 Gr.65 IS 2062 E250B0 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
90.6%
MECHANICAL MATCH
0%
OVERALL
60.4%
Specifications
Property CSA G40.21 300W ASTM A572 Grade 50
Standard CSA G40.21-13 (R2023) ASTM A572
Category Structural Steel Structural Steel
C (%) <=0.23 <=0.23
Mn (%) <=1.50 <=1.35
P (%) <=0.040 <=0.040
S (%) <=0.050 <=0.050
Si (%) Not specified <=0.40
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 300W ASTM A572 Grade 50
Tensile Strength 450-620 MPa 450 MPa min
Yield Strength 300 MPa min 345 MPa min
Elongation 20-23 % 18% min
Hardness Not specified 137-187 HB
Typical Applications
CSA G40.21 300W
structural fabrication,bridges,buildings,machinery frames,general construction,welded structures
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 300W Be Substituted With ASTM A572 Grade 50?
CSA G40.21 300W 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 300W
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–2800 mm (106.3–110.24 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 300W
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 300W and ASTM A572 Grade 50?
ASTM A572 Grade 50 specifies Si, Nb, V which are not specified for CSA G40.21 300W.
Can CSA G40.21 300W be substituted with ASTM A572 Grade 50?
CSA G40.21 300W 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.