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ASTM A283C vs CSA G40.21 260W

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

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

As per chemical composition, ASTM A283C vs CSA G40.21 260W 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 ASTM A283C:
ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80 ASTM A572 Grade 50 ASTM A572 Gr.65 CSA G40.21 480W CSA G40.21 400W AS/NZS 3679.1 350 CSA G40.21 300W AS/NZS 3679.1 300 CSA G40.21 400A GOST 19281 09G2S CSA G40.21 350W
Match Breakdown
CHEMISTRY MATCH
97.2%
MECHANICAL MATCH
25%
OVERALL
73.2%
Specifications
Property ASTM A283C CSA G40.21 260W
Standard ASTM A283 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) 0.24 max max 0.23
Mn (%) 0.90 max max 1.4
P (%) 0.035 max max 0.035
S (%) 0.040 max max 0.035
Si (%) 0.40 max max 0.4
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A283C CSA G40.21 260W
Tensile Strength 380-515 MPa 410-590 MPa
Yield Strength 205 MPa min 260 MPa min
Elongation 23-27% Not specified
Hardness 120-170 HB Not specified
Typical Applications
ASTM A283C
Used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.
CSA G40.21 260W
Bridges, buildings, general structural fabrication, storage tanks, older infrastructure projects.
Can ASTM A283C Be Substituted With CSA G40.21 260W?
ASTM A283C and CSA G40.21 260W 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
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)
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)
On M-EX Right Now
ASTM A283C
2 active listings and RFQs →
CSA G40.21 260W
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A283C and CSA G40.21 260W?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A283C be substituted with CSA G40.21 260W?
ASTM A283C and CSA G40.21 260W 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.