CSA G40.21 400W Steel - Specifications, Equivalents & Listings

Forms: Plate Category: Mild Steel

Grade Details

Grade	CSA G40.21 400W
Standard	CSA G40.21
Description	Canadian standard high-strength weldable structural steel with 400 MPa minimum yield strength. Excellent weldability and toughness.
Applications	Heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.

Equivalent / Similar Grades

Grade	Standard	Region	Live on M-EX
ASTM A572 Gr.60	ASTM	USA	0 listings, 2 RFQs →
EN S355JR	EN 10025	Europe	3 listings, 0 RFQs →
IS 2062 E350A	IS 2062	India	6 listings, 7 RFQs →
AS/NZS 3678 Grade 350	AS/NZS 3678	Australia	2 listings, 0 RFQs →
GB/T Q345B	GB/T 1591	China	2 listings, 0 RFQs →

Market Snapshot

7D Offer Price

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15D Offer Price

New

30D Offer Price

▼ -0.3%

Plate →

Balanced

Chemical Composition (%)

C	Mn	Si	P	S
max 0.23	max 1.6	max 0.5	max 0.035	max 0.035

Mechanical Properties

Yield Strength	400 MPa min
Tensile Strength	520-690 MPa

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

CSA G40.21 400W Plate

14.700 MT

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CSA G40.21 400W Plate

11.000 MT

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No open buyer requirements for CSA G40.21 400W at this time.