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

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

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

As per chemical composition, AS/NZS 3679.1 300 vs CSA G40.21 400W 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 AS/NZS 3679.1 300:
IS 2062 E250B0 CSA G40.21 480W AS/NZS 1595 C450 ASTM A1008 SS Grade 80 AS/NZS 1595 C350 ASTM A1008 SS Grade 50 IS 2062 E250A ASTM A572 Grade 50 ASTM A572 Gr.65 CSA G40.21 260W CSA G40.21 300W ASTM A283C
Match Breakdown
CHEMISTRY MATCH
98.6%
MECHANICAL MATCH
16%
OVERALL
71.1%
Specifications
Property AS/NZS 3679.1 300 CSA G40.21 400W
Standard AS/NZS 3679.1:2016 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.22 max 0.23
Mn (%) <=1.70 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 AS/NZS 3679.1 300 CSA G40.21 400W
Tensile Strength 440-600 MPa 520-690 MPa
Yield Strength 300 MPa min 400 MPa min
Elongation 22% min Not specified
Typical Applications
AS/NZS 3679.1 300
Hot-rolled structural bars and sections for general structural framing
CSA G40.21 400W
Heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.
Can AS/NZS 3679.1 300 Be Substituted With CSA G40.21 400W?
AS/NZS 3679.1 300 and CSA G40.21 400W 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
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)
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
AS/NZS 3679.1 300
2 active listings and RFQs →
CSA G40.21 400W
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3679.1 300 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 AS/NZS 3679.1 300 be substituted with CSA G40.21 400W?
AS/NZS 3679.1 300 and CSA G40.21 400W 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.