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GB/T 700 Q235 vs ASTM A105

Related Material — 59.6% match based on chemical composition and mechanical property overlap.

GB/T 700 Q235 (GB/T 700-2006) and ASTM A105 (ASTM A105) are both steel grades. GB/T 700 Q235 is classified under Structural Steel, while ASTM A105 is classified under Carbon Steel — a different category, which is worth noting alongside the chemistry match below. GB/T 700 Q235 is typically used for general structural fabrication, bridges, buildings, while ASTM A105 is commonly used for flanges, fittings, valves, pressure piping components, forged pressure vessel parts. GB/T 700 Q235 is defined under Guobiao Standards (GB/T), originating from China, while ASTM A105 is defined under ASTM International, originating from United States.

As per chemical composition, GB/T 700 Q235 vs ASTM A105 is a 89.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 59.6%.

Frequently Compared With GB/T 700 Q235:
GOST 19281 09G2S ASTM A1008 SS Grade 50 CSA G40.21 350W ASTM A572 Gr.65 CSA G40.21 400W ASTM A1008 SS Grade 80 CSA G40.21 300W CSA G40.21 400A AS/NZS 3679.1 300 AS/NZS 3679.1 350 ASTM A283C CSA G40.21 480W
Match Breakdown
CHEMISTRY MATCH
89.3%
MECHANICAL MATCH
0%
OVERALL
59.6%
Specifications
Property GB/T 700 Q235 ASTM A105
Standard GB/T 700-2006 ASTM A105
Category Structural Steel Carbon Steel
C (%) ≤0.22 ≤0.35
Mn (%) 0.30–0.70 0.60–1.05
Si (%) ≤0.35 0.10–0.35
S (%) ≤0.050 ≤0.040
P (%) ≤0.045 ≤0.035
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 Q235 ASTM A105
Tensile Strength 375–500 MPa 485 MPa min
Yield Strength ≥235 MPa 250 MPa min
Elongation ≥26% ≥22%
Hardness Not specified ≤197 HB
Typical Applications
GB/T 700 Q235
General structural fabrication, bridges, buildings
ASTM A105
Flanges, fittings, valves, pressure piping components, forged pressure vessel parts
Key Differences
Can GB/T 700 Q235 Be Substituted With ASTM A105?
GB/T 700 Q235 and ASTM A105 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 Q235
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3100–3700 mm (122.05–145.67 in)
ASTM A105
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6100–7000 mm (240.16–275.59 in)
On M-EX Right Now
GB/T 700 Q235
2 active listings and RFQs →
ASTM A105
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 700 Q235 and ASTM A105?
Different category: GB/T 700 Q235 is Structural Steel, ASTM A105 is Carbon Steel.
Can GB/T 700 Q235 be substituted with ASTM A105?
GB/T 700 Q235 and ASTM A105 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.