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AS/NZS 3678 Grade 250 vs CSA G40.21 400W

Related Material — 64.7% match based on chemical composition and mechanical property overlap.

AS/NZS 3678 Grade 250 (AS/NZS 3678:2016) and CSA G40.21 400W (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. AS/NZS 3678 Grade 250 is typically used for structural fabrication,buildings,bridges,general construction,machinery frames,welded structures,plates, while CSA G40.21 400W is commonly used for heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.. AS/NZS 3678 Grade 250 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 3678 Grade 250 vs CSA G40.21 400W is a 93.4% match. As per mechanical properties, the match is 7.1%. Combined, this makes them a related material overall at 64.7%.

Frequently Compared With AS/NZS 3678 Grade 250:
ASTM A1008 SS Grade 50 CSA G40.21 400A GOST 19281 09G2S AS/NZS 3679.1 350 CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 480W CSA G40.21 300W CSA G40.21 350W ASTM A1008 SS Grade 80 ASTM A283C ASTM A572 Gr.65
Match Breakdown
CHEMISTRY MATCH
93.4%
MECHANICAL MATCH
7.1%
OVERALL
64.7%
Specifications
Property AS/NZS 3678 Grade 250 CSA G40.21 400W
Standard AS/NZS 3678:2016 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.22 max 0.23
Mn (%) <=1.70 max 1.6
P (%) <=0.040 max 0.035
S (%) <=0.040 max 0.035
Si (%) Not specified max 0.5
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 3678 Grade 250 CSA G40.21 400W
Tensile Strength 410-560 MPa 520-690 MPa
Yield Strength 250 MPa min 400 MPa min
Elongation 22-25 % Not specified
Typical Applications
AS/NZS 3678 Grade 250
structural fabrication,buildings,bridges,general construction,machinery frames,welded structures,plates
CSA G40.21 400W
Heavy structural fabrication, bridges, offshore platforms, cranes, pressure vessels, mining equipment.
Key Differences
Can AS/NZS 3678 Grade 250 Be Substituted With CSA G40.21 400W?
AS/NZS 3678 Grade 250 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
AS/NZS 3678 Grade 250
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2900–3700 mm (114.17–145.67 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
AS/NZS 3678 Grade 250
2 active listings and RFQs →
CSA G40.21 400W
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3678 Grade 250 and CSA G40.21 400W?
CSA G40.21 400W specifies Si which is not specified for AS/NZS 3678 Grade 250.
Can AS/NZS 3678 Grade 250 be substituted with CSA G40.21 400W?
AS/NZS 3678 Grade 250 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.