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CSA G40.21 400A Steel - Specifications & Listings

CSA G40.21 400A: High strength structural steel with 400 MPa yield strength, Class A designation indicating atmospheric corrosion resistance. Used for heavy structural fabrications and exposed applications.

Forms: Plate Category: Mild Steel
Grade Details
GradeCSA G40.21 400A
StandardCSA G40.21
DescriptionHigh strength structural steel with 400 MPa yield strength, Class A designation indicating atmospheric corrosion resistance. Used for heavy structural fabrications and exposed applications.
ApplicationsAtmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
A588 Grade B ASTM 1 listing, 1 RFQ →
S355J2WP EN 10025-5 1 listing, 1 RFQ →
400W CSA G40.21 2 listings, 0 RFQs →
Supply & Demand by FormSee Full Supply & Demand →
Plate →
Balanced
Chemical Composition (%)
C Mn Si P S Cu
<=0.23 <=1.60 <=0.40 <=0.035 <=0.035 0.20-0.40
Mechanical Properties
tensile_strength 520-670 MPa
yield_strength 400 MPa min
elongation 17% min
impact 27J at 0°C

Active CSA G40.21 400A Listings on M-EX (For Sale)

CSA G40.21 400A Plate
2.900 MT
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CSA G40.21 400A Plate
2.100 MT
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