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GB/T 700 Q235B vs AS/NZS 3679.1 300

Related Material — 66.8% match based on chemical composition and mechanical property overlap.

GB/T 700 Q235B (GB/T 700:2006) and AS/NZS 3679.1 300 (AS/NZS 3679.1:2016) are both steel grades. Both fall under the Structural Steel category. GB/T 700 Q235B is typically used for structural steelwork, fabricated components, machinery parts, storage tanks, pipes, while AS/NZS 3679.1 300 is commonly used for hot-rolled structural bars and sections for general structural framing. GB/T 700 Q235B is defined under Guobiao Standards (GB/T), originating from China, while AS/NZS 3679.1 300 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, GB/T 700 Q235B vs AS/NZS 3679.1 300 is a 95.9% match. As per mechanical properties, the match is 8.7%. Combined, this makes them a related material overall at 66.8%.

Frequently Compared With GB/T 700 Q235B:
CSA G40.21 260W CSA G40.21 400W CSA G40.21 350W CSA G40.21 480W GOST 19281 09G2S CSA G40.21 300W AS/NZS 3679.1 350 ASTM A1008 SS Grade 50 CSA G40.21 400A ASTM A1008 SS Grade 80 ASTM A283C ASTM A572 Gr.65
Match Breakdown
CHEMISTRY MATCH
95.9%
MECHANICAL MATCH
8.7%
OVERALL
66.8%
Specifications
Property GB/T 700 Q235B AS/NZS 3679.1 300
Standard GB/T 700:2006 AS/NZS 3679.1:2016
Category Structural Steel Structural Steel
C (%) <=0.20 <=0.22
Si (%) <=0.35 <=0.50
Mn (%) <=1.40 <=1.70
P (%) <=0.045 <=0.040
S (%) <=0.045 <=0.040
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 Q235B AS/NZS 3679.1 300
Tensile Strength 370-500 MPa 440-600 MPa
Yield Strength >=235 MPa 300 MPa min
Elongation >=26% 22% min
Condition Hot rolled, controlled rolled or normalized; yield up to 16 mm, elongation up to 40 mm (N/mm2 = MPa) Not specified
Typical Applications
GB/T 700 Q235B
structural steelwork, fabricated components, machinery parts, storage tanks, pipes
AS/NZS 3679.1 300
Hot-rolled structural bars and sections for general structural framing
Can GB/T 700 Q235B Be Substituted With AS/NZS 3679.1 300?
GB/T 700 Q235B and AS/NZS 3679.1 300 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
GB/T 700 Q235B
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2600–4800 mm (102.36–188.98 in)
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)
On M-EX Right Now
GB/T 700 Q235B
2 active listings and RFQs →
AS/NZS 3679.1 300
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 700 Q235B and AS/NZS 3679.1 300?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 700 Q235B be substituted with AS/NZS 3679.1 300?
GB/T 700 Q235B and AS/NZS 3679.1 300 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.