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ASME SA105 vs GB/T 700 Q235

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

ASME SA105 (ASME BPVC.II.A-2025 SA-105/SA-105M) and GB/T 700 Q235 (GB/T 700-2006) are both steel grades. ASME SA105 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. ASME SA105 is typically used for pressure vessel flanges, boiler fittings, valves, piping components requiring asme certification, while GB/T 700 Q235 is commonly used for general structural fabrication, bridges, buildings. GB/T 700 Q235 is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, ASME SA105 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 ASME SA105:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A04 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
89.3%
MECHANICAL MATCH
0%
OVERALL
59.6%
Specifications
Property ASME SA105 GB/T 700 Q235
Standard ASME BPVC.II.A-2025 SA-105/SA-105M 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 ASME SA105 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
ASME SA105
Pressure vessel flanges, boiler fittings, valves, piping components requiring ASME certification
GB/T 700 Q235
General structural fabrication, bridges, buildings
Key Differences
Can ASME SA105 Be Substituted With GB/T 700 Q235?
ASME SA105 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
ASME SA105
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6000–6800 mm (236.22–267.72 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
ASME SA105
2 active listings and RFQs →
GB/T 700 Q235
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASME SA105 and GB/T 700 Q235?
Different category: ASME SA105 is Carbon Steel, GB/T 700 Q235 is Structural Steel.
Can ASME SA105 be substituted with GB/T 700 Q235?
ASME SA105 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.