Related Material — 65% match
based on chemical composition and mechanical property overlap.
GB/T 700 Q235A (GB/T 700:2006) and CSA G40.21 350W (CSA G40.21-13 (R2023)) are both steel grades.
Both fall under the Structural Steel category.
GB/T 700 Q235A is typically used for structural sections, welded structures, general fabrication, machinery frames, steel plates, pipes, while CSA G40.21 350W is commonly used for used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications..
GB/T 700 Q235A is defined under Guobiao Standards (GB/T), originating from China, while CSA G40.21 350W is defined under Canadian Standards Association (CSA), originating from Canada.
As per chemical composition, GB/T 700 Q235A vs CSA G40.21 350W is a 94.2% match.
As per mechanical properties, the match is 6.7%.
Combined, this makes them a related material overall at 65%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
GB/T 700 Q235A
CSA G40.21 350W
Tensile Strength
370-500 MPa
450-620 MPa
Yield Strength
>=235 MPa
350 MPa min
Elongation
>=26%
20% min
Condition
Hot rolled, controlled rolled or normalized; yield up to 16 mm, elongation up to 40 mm (N/mm2 = MPa)
Used in buildings, bridges, cranes, transmission towers, heavy equipment, and structural fabrications.
Can GB/T 700 Q235A Be Substituted With CSA G40.21 350W?
GB/T 700 Q235A and CSA G40.21 350W 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 GB/T 700 Q235A and CSA G40.21 350W?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 700 Q235A be substituted with CSA G40.21 350W?
GB/T 700 Q235A and CSA G40.21 350W 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.