Post Stock Login Register

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

Related Material — 65.6% match based on chemical composition and mechanical property overlap.

ASTM A1008 SS Grade 80 (ASTM A1008) and CSA G40.21 400W (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 400W is commonly used for heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.. ASTM A1008 SS Grade 80 is defined under ASTM International, originating from United States, while CSA G40.21 400W is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, ASTM A1008 SS Grade 80 vs CSA G40.21 400W is a 98.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 65.6%.

Frequently Compared With ASTM A1008 SS Grade 80:
AS/NZS 3679.1 300 CSA G40.21 480W ASTM A1008 SS Grade 50 AS/NZS 1595 C450 GOST 19281 09G2S CSA G40.21 400A CSA G40.21 260W ASTM A283C AS/NZS 3679.1 350 CSA G40.21 350W CSA G40.21 300W ASTM A572 Grade 50
Match Breakdown
CHEMISTRY MATCH
98.4%
MECHANICAL MATCH
0%
OVERALL
65.6%
Specifications
Property ASTM A1008 SS Grade 80 CSA G40.21 400W
Standard ASTM A1008 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.25 max 0.23
Mn (%) <=1.65 max 1.6
Si (%) <=0.50 max 0.5
P (%) <=0.040 max 0.035
S (%) <=0.040 max 0.035
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 400W
Tensile Strength 570 MPa min 520-690 MPa
Yield Strength 550 MPa min 400 MPa min
Elongation 10% min Not specified
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 400W
Heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.
Can ASTM A1008 SS Grade 80 Be Substituted With CSA G40.21 400W?
ASTM A1008 SS Grade 80 and CSA G40.21 400W 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 400W
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–5200 mm (98.43–204.72 in)
On M-EX Right Now
ASTM A1008 SS Grade 80
2 active listings and RFQs →
CSA G40.21 400W
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A1008 SS Grade 80 and CSA G40.21 400W?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A1008 SS Grade 80 be substituted with CSA G40.21 400W?
ASTM A1008 SS Grade 80 and CSA G40.21 400W 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.