Related Material — 61% match
based on chemical composition and mechanical property overlap.
AS/NZS 3678 Grade 400 (AS/NZS 3678:2016) and CSA G40.21 300W (CSA G40.21-13 (R2023)) are both steel grades.
Both fall under the Structural Steel category.
AS/NZS 3678 Grade 400 is typically used for heavy structural fabrication, crane booms, mining machinery, earthmoving equipment, structural columns., while CSA G40.21 300W is commonly used for structural fabrication,bridges,buildings,machinery frames,general construction,welded structures.
AS/NZS 3678 Grade 400 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while CSA G40.21 300W is defined under Canadian Standards Association (CSA), originating from Canada.
As per chemical composition, AS/NZS 3678 Grade 400 vs CSA G40.21 300W is a 91.5% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a related material overall at 61%.
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 400
CSA G40.21 300W
Yield Strength
400 MPa min (t<=12mm)
300 MPa min
Tensile Strength
~520 MPa min (approx, equivalent to ASTM A572 Gr.60)
AS/NZS 3678 Grade 400 specifies Si which is not specified for CSA G40.21 300W.
Can AS/NZS 3678 Grade 400 Be Substituted With CSA G40.21 300W?
AS/NZS 3678 Grade 400 and CSA G40.21 300W 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.
What is the difference between AS/NZS 3678 Grade 400 and CSA G40.21 300W?
AS/NZS 3678 Grade 400 specifies Si which is not specified for CSA G40.21 300W.
Can AS/NZS 3678 Grade 400 be substituted with CSA G40.21 300W?
AS/NZS 3678 Grade 400 and CSA G40.21 300W 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.