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CSA G40.21 260W vs ASTM A283C

Close Alternative — 73.2% match based on chemical composition and mechanical property overlap.

CSA G40.21 260W (CSA G40.21-13 (R2023)) and ASTM A283C (ASTM A283) are both steel grades. Both fall under the Structural Steel category. CSA G40.21 260W is typically used for bridges, buildings, general structural fabrication, storage tanks, older infrastructure projects., while ASTM A283C is commonly used for used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.. CSA G40.21 260W is defined under Canadian Standards Association (CSA), originating from Canada, while ASTM A283C is defined under ASTM International, originating from United States.

As per chemical composition, CSA G40.21 260W vs ASTM A283C is a 97.2% match. As per mechanical properties, the match is 25%. Combined, this makes them a close alternative overall at 73.2%.

Frequently Compared With CSA G40.21 260W:
IS 2062 E250B0 AS/NZS 1595 C450 IS 2062 E250A CSA G40.21 350W GOST 19281 09G2S AS/NZS 1595 C350 CSA G40.21 400A ASTM A1008 SS Grade 80 CSA G40.21 300W ASTM A572 Grade 50 ASTM A572 Gr.65 AS/NZS 3679.1 300
Match Breakdown
CHEMISTRY MATCH
97.2%
MECHANICAL MATCH
25%
OVERALL
73.2%
Specifications
Property CSA G40.21 260W ASTM A283C
Standard CSA G40.21-13 (R2023) ASTM A283
Category Structural Steel Structural Steel
C (%) max 0.23 0.24 max
Mn (%) max 1.4 0.90 max
Si (%) max 0.4 0.40 max
P (%) max 0.035 0.035 max
S (%) max 0.035 0.040 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 260W ASTM A283C
Yield Strength 260 MPa min 205 MPa min
Tensile Strength 410-590 MPa 380-515 MPa
Elongation Not specified 23-27%
Hardness Not specified 120-170 HB
Typical Applications
CSA G40.21 260W
Bridges, buildings, general structural fabrication, storage tanks, older infrastructure projects.
ASTM A283C
Used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.
Can CSA G40.21 260W Be Substituted With ASTM A283C?
CSA G40.21 260W and ASTM A283C 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
CSA G40.21 260W
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3400–4000 mm (133.86–157.48 in)
ASTM A283C
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2900–3700 mm (114.17–145.67 in)
On M-EX Right Now
CSA G40.21 260W
2 active listings and RFQs →
ASTM A283C
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 260W and ASTM A283C?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can CSA G40.21 260W be substituted with ASTM A283C?
CSA G40.21 260W and ASTM A283C 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.