Close Alternative — 83.8% match
based on chemical composition and mechanical property overlap.
AS/NZS 3678 Grade 300 (AS/NZS 3678:2016) and GB/T 700 Q275C (GB/T 700:2006) are both steel grades.
Both fall under the Structural Steel category.
AS/NZS 3678 Grade 300 is typically used for general fabrication, structural members, high-rise buildings, bridges, storage tanks, while GB/T 700 Q275C is commonly used for hot rolled structural sheets, strips, sections and bars for welding, riveting and bolting engineering.
AS/NZS 3678 Grade 300 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while GB/T 700 Q275C is defined under Guobiao Standards (GB/T), originating from China.
As per chemical composition, AS/NZS 3678 Grade 300 vs GB/T 700 Q275C is a 96.8% match.
As per mechanical properties, the match is 57.8%.
Combined, this makes them a close alternative overall at 83.8%.
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 300
GB/T 700 Q275C
Tensile Strength
430-560 MPa
410-540 MPa
Yield Strength
300 MPa min
>=275 MPa
Elongation
22% min
>=22%
Condition
Not specified
Hot rolled, controlled rolled or normalized; yield up to 16 mm, elongation up to 40 mm (N/mm2 = MPa)
Typical Applications
AS/NZS 3678 Grade 300
General fabrication, structural members, high-rise buildings, bridges, storage tanks
GB/T 700 Q275C
Hot rolled structural sheets, strips, sections and bars for welding, riveting and bolting engineering
Can AS/NZS 3678 Grade 300 Be Substituted With GB/T 700 Q275C?
AS/NZS 3678 Grade 300 and GB/T 700 Q275C 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.
What is the difference between AS/NZS 3678 Grade 300 and GB/T 700 Q275C?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AS/NZS 3678 Grade 300 be substituted with GB/T 700 Q275C?
AS/NZS 3678 Grade 300 and GB/T 700 Q275C 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.