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ASTM A105 vs GB/T 700 Q235

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

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

As per chemical composition, ASTM A105 vs GB/T 700 Q235 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 ASTM A105:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
89.3%
MECHANICAL MATCH
0%
OVERALL
59.6%
Specifications
Property ASTM A105 GB/T 700 Q235
Standard ASTM A105 GB/T 700-2006
Category Carbon Steel Structural Steel
C (%) ≤0.35 ≤0.22
Mn (%) 0.60–1.05 0.30–0.70
Si (%) 0.10–0.35 ≤0.35
P (%) ≤0.035 ≤0.045
S (%) ≤0.040 ≤0.050
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A105 GB/T 700 Q235
Tensile Strength 485 MPa min 375–500 MPa
Yield Strength 250 MPa min ≥235 MPa
Elongation ≥22% ≥26%
Hardness ≤197 HB Not specified
Typical Applications
ASTM A105
Flanges, fittings, valves, pressure piping components, forged pressure vessel parts
GB/T 700 Q235
General structural fabrication, bridges, buildings
Key Differences
Can ASTM A105 Be Substituted With GB/T 700 Q235?
ASTM A105 and GB/T 700 Q235 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
ASTM A105
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6100–7000 mm (240.16–275.59 in)
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)
On M-EX Right Now
ASTM A105
2 active listings and RFQs →
GB/T 700 Q235
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A105 and GB/T 700 Q235?
Different category: ASTM A105 is Carbon Steel, GB/T 700 Q235 is Structural Steel.
Can ASTM A105 be substituted with GB/T 700 Q235?
ASTM A105 and GB/T 700 Q235 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.