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GB/T 700 Q235A vs GOST 19281 09G2S

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

GB/T 700 Q235A (GB/T 700:2006) and GOST 19281 09G2S (GOST 19281-2014) 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 GOST 19281 09G2S is commonly used for used for bridges, pressure vessels, pipelines, structural frames, and heavy equipment components.. GB/T 700 Q235A is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 700 Q235A vs GOST 19281 09G2S is a 64.4% match. As per mechanical properties, the match is 1.2%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 700 Q235A:
CSA G40.21 400W CSA G40.21 350W ASTM A1008 SS Grade 80 AS/NZS 3679.1 350 CSA G40.21 480W CSA G40.21 300W ASTM A1008 SS Grade 50 CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 400A ASTM A283C ASTM A572 Gr.65
Match Breakdown
CHEMISTRY MATCH
64.4%
MECHANICAL MATCH
1.2%
OVERALL
35%
Specifications
Property GB/T 700 Q235A GOST 19281 09G2S
Standard GB/T 700:2006 GOST 19281-2014
Category Structural Steel Structural Steel
C (%) <=0.22 0.07-0.12
Si (%) <=0.35 0.5-0.8
Mn (%) <=1.40 1.3-1.7
P (%) <=0.045 0.035 max
S (%) <=0.050 0.04 max
Ni (%) Not specified 0.3 max
Cr (%) Not specified 0.3 max
Cu (%) Not specified 0.3 max
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 GOST 19281 09G2S
Tensile Strength 370-500 MPa 490-640 MPa
Yield Strength >=235 MPa 345 MPa min
Elongation >=26% 21% min
Condition Hot rolled, controlled rolled or normalized; yield up to 16 mm, elongation up to 40 mm (N/mm2 = MPa) Not specified
Hardness Not specified 140-190 HB
Typical Applications
GB/T 700 Q235A
structural sections, welded structures, general fabrication, machinery frames, steel plates, pipes
GOST 19281 09G2S
Used for bridges, pressure vessels, pipelines, structural frames, and heavy equipment components.
Key Differences
Can GB/T 700 Q235A Be Substituted With GOST 19281 09G2S?
GB/T 700 Q235A and GOST 19281 09G2S 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 Q235A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2900–3100 mm (114.17–122.05 in)
GOST 19281 09G2S
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2900–3800 mm (114.17–149.61 in)
On M-EX Right Now
GB/T 700 Q235A
2 active listings and RFQs →
GOST 19281 09G2S
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 700 Q235A and GOST 19281 09G2S?
GOST 19281 09G2S specifies Ni, Cr, Cu which are not specified for GB/T 700 Q235A.
Can GB/T 700 Q235A be substituted with GOST 19281 09G2S?
GB/T 700 Q235A and GOST 19281 09G2S 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.