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ASTM A1008 SS Grade 80 vs CSA G40.21 400A

Related Material — 63% match based on chemical composition and mechanical property overlap.

ASTM A1008 SS Grade 80 (ASTM A1008) and CSA G40.21 400A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. ASTM A1008 SS Grade 80 is typically used for cold-rolled high-strength structural steel sheet, higher strength grade; automotive structural/reinforcement components, cold-formed high-strength parts, 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 A1008 SS Grade 80 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 A1008 SS Grade 80 vs CSA G40.21 400A is a 94.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 63%.

Frequently Compared With ASTM A1008 SS Grade 80:
CSA G40.21 400W ASTM A1008 SS Grade 50 AS/NZS 3679.1 300 CSA G40.21 480W AS/NZS 1595 C450 GOST 19281 09G2S ASTM A283C CSA G40.21 260W AS/NZS 3679.1 350 CSA G40.21 350W CSA G40.21 300W ASTM A572 Grade 50
Match Breakdown
CHEMISTRY MATCH
94.4%
MECHANICAL MATCH
0%
OVERALL
63%
Specifications
Property ASTM A1008 SS Grade 80 CSA G40.21 400A
Standard ASTM A1008 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.25 <=0.23
Mn (%) <=1.65 <=1.60
Si (%) <=0.50 <=0.40
P (%) <=0.040 <=0.035
S (%) <=0.040 <=0.035
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 A1008 SS Grade 80 CSA G40.21 400A
Tensile Strength 570 MPa min 520-670 MPa
Yield Strength 550 MPa min 400 MPa min
Elongation 10% min 17% min
Impact Not specified 27J at 0°C
Typical Applications
ASTM A1008 SS Grade 80
Cold-rolled high-strength structural steel sheet, higher strength grade; automotive structural/reinforcement components, cold-formed high-strength parts
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 A1008 SS Grade 80 Be Substituted With CSA G40.21 400A?
ASTM A1008 SS Grade 80 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 A1008 SS Grade 80
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3700 mm (98.43–145.67 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 A1008 SS Grade 80
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A1008 SS Grade 80 and CSA G40.21 400A?
CSA G40.21 400A specifies Cu which is not specified for ASTM A1008 SS Grade 80.
Can ASTM A1008 SS Grade 80 be substituted with CSA G40.21 400A?
ASTM A1008 SS Grade 80 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.