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CSA G40.21 300W vs ASTM A572 Gr.65

Related Material — 65.9% match based on chemical composition and mechanical property overlap.

CSA G40.21 300W (CSA G40.21-13 (R2023)) and ASTM A572 Gr.65 (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 Gr.65 is commonly used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.. CSA G40.21 300W is defined under Canadian Standards Association (CSA), originating from Canada, while ASTM A572 Gr.65 is defined under ASTM International, originating from United States.

As per chemical composition, CSA G40.21 300W vs ASTM A572 Gr.65 is a 90.6% match. As per mechanical properties, the match is 16.4%. Combined, this makes them a related material overall at 65.9%.

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 AS/NZS 1595 C450 CSA G40.21 260W ASTM A572 Grade 50 IS 2062 E250A IS 2062 E250B0 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
90.6%
MECHANICAL MATCH
16.4%
OVERALL
65.9%
Specifications
Property CSA G40.21 300W ASTM A572 Gr.65
Standard CSA G40.21-13 (R2023) ASTM A572
Category Structural Steel Structural Steel
C (%) <=0.23 0.23 max
Mn (%) <=1.50 1.35 max
P (%) <=0.040 0.040 max
S (%) <=0.050 0.050 max
Si (%) Not specified 0.40 max
V (%) Not specified 0.15 max
Nb (%) Not specified 0.05 max
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 Gr.65
Tensile Strength 450-620 MPa 550-690 MPa
Yield Strength 300 MPa min 450 MPa min
Elongation 20-23 % 18-21%
Hardness Not specified 170-220 HB
Typical Applications
CSA G40.21 300W
structural fabrication,bridges,buildings,machinery frames,general construction,welded structures
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
Key Differences
Can CSA G40.21 300W Be Substituted With ASTM A572 Gr.65?
CSA G40.21 300W and ASTM A572 Gr.65 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 Gr.65
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2600–4400 mm (102.36–173.23 in)
On M-EX Right Now
CSA G40.21 300W
2 active listings and RFQs →
ASTM A572 Gr.65
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 300W and ASTM A572 Gr.65?
ASTM A572 Gr.65 specifies Si, V, Nb which are not specified for CSA G40.21 300W.
Can CSA G40.21 300W be substituted with ASTM A572 Gr.65?
CSA G40.21 300W and ASTM A572 Gr.65 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.