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GB/T 700 Q235B vs ASTM A572 Gr.65

Related Material — 62.4% match based on chemical composition and mechanical property overlap.

GB/T 700 Q235B (GB/T 700:2006) and ASTM A572 Gr.65 (ASTM A572) 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 ASTM A572 Gr.65 is commonly used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.. GB/T 700 Q235B is defined under Guobiao Standards (GB/T), originating from China, while ASTM A572 Gr.65 is defined under ASTM International, originating from United States.

As per chemical composition, GB/T 700 Q235B vs ASTM A572 Gr.65 is a 93.6% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 62.4%.

Frequently Compared With GB/T 700 Q235B:
CSA G40.21 260W CSA G40.21 400W AS/NZS 3679.1 300 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
Match Breakdown
CHEMISTRY MATCH
93.6%
MECHANICAL MATCH
0%
OVERALL
62.4%
Specifications
Property GB/T 700 Q235B ASTM A572 Gr.65
Standard GB/T 700:2006 ASTM A572
Category Structural Steel Structural Steel
C (%) <=0.20 0.23 max
Si (%) <=0.35 0.40 max
Mn (%) <=1.40 1.35 max
P (%) <=0.045 0.040 max
S (%) <=0.045 0.050 max
V (%) Not specified 0.15 max
Nb (%) Not specified 0.05 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 Q235B ASTM A572 Gr.65
Tensile Strength 370-500 MPa 550-690 MPa
Yield Strength >=235 MPa 450 MPa min
Elongation >=26% 18-21%
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 170-220 HB
Typical Applications
GB/T 700 Q235B
structural steelwork, fabricated components, machinery parts, storage tanks, pipes
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
Key Differences
Can GB/T 700 Q235B Be Substituted With ASTM A572 Gr.65?
GB/T 700 Q235B and ASTM A572 Gr.65 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)
ASTM A572 Gr.65
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2600–4400 mm (102.36–173.23 in)
On M-EX Right Now
GB/T 700 Q235B
2 active listings and RFQs →
ASTM A572 Gr.65
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 700 Q235B and ASTM A572 Gr.65?
ASTM A572 Gr.65 specifies V, Nb which are not specified for GB/T 700 Q235B.
Can GB/T 700 Q235B be substituted with ASTM A572 Gr.65?
GB/T 700 Q235B and ASTM A572 Gr.65 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.