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CSA G40.21 400W vs AS/NZS 3679.1 300

Close Alternative — 71.1% match based on chemical composition and mechanical property overlap.

CSA G40.21 400W (CSA G40.21-13 (R2023)) and AS/NZS 3679.1 300 (AS/NZS 3679.1:2016) are both steel grades. Both fall under the Structural Steel category. CSA G40.21 400W is typically used for heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment., while AS/NZS 3679.1 300 is commonly used for hot-rolled structural bars and sections for general structural framing. CSA G40.21 400W is defined under Canadian Standards Association (CSA), originating from Canada, while AS/NZS 3679.1 300 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, CSA G40.21 400W vs AS/NZS 3679.1 300 is a 98.6% match. As per mechanical properties, the match is 16%. Combined, this makes them a close alternative overall at 71.1%.

Frequently Compared With CSA G40.21 400W:
AS/NZS 1595 C450 CSA G40.21 300W AS/NZS 3679.1 350 ASTM A1008 SS Grade 80 IS 2062 E250A IS 2062 E250B0 GOST 19281 09G2S AS/NZS 1595 C350 ASTM A1008 SS Grade 50 CSA G40.21 350W CSA G40.21 400A ASTM A283C
Match Breakdown
CHEMISTRY MATCH
98.6%
MECHANICAL MATCH
16%
OVERALL
71.1%
Specifications
Property CSA G40.21 400W AS/NZS 3679.1 300
Standard CSA G40.21-13 (R2023) AS/NZS 3679.1:2016
Category Structural Steel Structural Steel
C (%) max 0.23 <=0.22
Mn (%) max 1.6 <=1.70
Si (%) max 0.5 <=0.50
P (%) max 0.035 <=0.040
S (%) max 0.035 <=0.040
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 400W AS/NZS 3679.1 300
Yield Strength 400 MPa min 300 MPa min
Tensile Strength 520-690 MPa 440-600 MPa
Elongation Not specified 22% min
Typical Applications
CSA G40.21 400W
Heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.
AS/NZS 3679.1 300
Hot-rolled structural bars and sections for general structural framing
Can CSA G40.21 400W Be Substituted With AS/NZS 3679.1 300?
CSA G40.21 400W and AS/NZS 3679.1 300 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
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)
AS/NZS 3679.1 300
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–2700 mm (106.3–106.3 in)
On M-EX Right Now
CSA G40.21 400W
2 active listings and RFQs →
AS/NZS 3679.1 300
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 400W and AS/NZS 3679.1 300?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can CSA G40.21 400W be substituted with AS/NZS 3679.1 300?
CSA G40.21 400W and AS/NZS 3679.1 300 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.