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CSA G40.21 400A vs ASTM A283C

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

CSA G40.21 400A (CSA G40.21-13 (R2023)) and ASTM A283C (ASTM A283) are both steel grades. Both fall under the Structural Steel category. CSA G40.21 400A is typically used for atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed, while ASTM A283C is commonly used for used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.. CSA G40.21 400A 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 400A vs ASTM A283C 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 CSA G40.21 400A:
CSA G40.21 480W CSA G40.21 350W ASTM A1008 SS Grade 50 AS/NZS 1595 C450 ASTM A1008 SS Grade 80 AS/NZS 1595 C350 IS 2062 E250A CSA G40.21 260W CSA G40.21 300W CSA G40.21 400W ASTM A572 Grade 50 IS 2062 E250B0
Match Breakdown
CHEMISTRY MATCH
93.9%
MECHANICAL MATCH
0%
OVERALL
62.6%
Specifications
Property CSA G40.21 400A ASTM A283C
Standard CSA G40.21-13 (R2023) ASTM A283
Category Structural Steel Structural Steel
C (%) <=0.23 0.24 max
Mn (%) <=1.60 0.90 max
Si (%) <=0.40 0.40 max
P (%) <=0.035 0.035 max
S (%) <=0.035 0.040 max
Cu (%) 0.20-0.40 Not specified
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 400A ASTM A283C
Tensile Strength 520-670 MPa 380-515 MPa
Yield Strength 400 MPa min 205 MPa min
Elongation 17% min 23-27%
Impact 27J at 0°C Not specified
Hardness Not specified 120-170 HB
Typical Applications
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
ASTM A283C
Used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.
Key Differences
Can CSA G40.21 400A Be Substituted With ASTM A283C?
CSA G40.21 400A and ASTM A283C 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 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)
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 400A
2 active listings and RFQs →
ASTM A283C
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 400A and ASTM A283C?
CSA G40.21 400A specifies Cu which is not specified for ASTM A283C.
Can CSA G40.21 400A be substituted with ASTM A283C?
CSA G40.21 400A and ASTM A283C 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.