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ASTM A283C vs CSA G40.21 400A

Related Material — 62.6% match based on chemical composition and mechanical property overlap.

ASTM A283C (ASTM A283) and CSA G40.21 400A (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 400A is commonly used for atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed. ASTM A283C is defined under ASTM International, originating from United States, while CSA G40.21 400A is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, ASTM A283C vs CSA G40.21 400A is a 93.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 62.6%.

Frequently Compared With ASTM A283C:
ASTM A1008 SS Grade 50 CSA G40.21 260W 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 GOST 19281 09G2S CSA G40.21 350W
Match Breakdown
CHEMISTRY MATCH
93.9%
MECHANICAL MATCH
0%
OVERALL
62.6%
Specifications
Property ASTM A283C CSA G40.21 400A
Standard ASTM A283 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) 0.24 max <=0.23
Mn (%) 0.90 max <=1.60
P (%) 0.035 max <=0.035
S (%) 0.040 max <=0.035
Si (%) 0.40 max <=0.40
Cu (%) Not specified 0.20-0.40
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 400A
Tensile Strength 380-515 MPa 520-670 MPa
Yield Strength 205 MPa min 400 MPa min
Elongation 23-27% 17% min
Hardness 120-170 HB Not specified
Impact Not specified 27J at 0°C
Typical Applications
ASTM A283C
Used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.
CSA G40.21 400A
Atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed
Key Differences
Can ASTM A283C Be Substituted With CSA G40.21 400A?
ASTM A283C and CSA G40.21 400A 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
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 400A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–4200 mm (110.24–165.35 in)
On M-EX Right Now
ASTM A283C
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A283C and CSA G40.21 400A?
CSA G40.21 400A specifies Cu which is not specified for ASTM A283C.
Can ASTM A283C be substituted with CSA G40.21 400A?
ASTM A283C and CSA G40.21 400A 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.