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GB/T 700 Q275A vs ASTM A1008 SS Grade 50

Related Material — 63.6% match based on chemical composition and mechanical property overlap.

GB/T 700 Q275A (GB/T 700:2006) and ASTM A1008 SS Grade 50 (ASTM A1008) are both steel grades. Both fall under the Structural Steel category. GB/T 700 Q275A is typically used for hot rolled structural sheets, strips, sections and bars for welding, riveting and bolting engineering, while ASTM A1008 SS Grade 50 is commonly used for cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength. GB/T 700 Q275A is defined under Guobiao Standards (GB/T), originating from China, while ASTM A1008 SS Grade 50 is defined under ASTM International, originating from United States.

As per chemical composition, GB/T 700 Q275A vs ASTM A1008 SS Grade 50 is a 95.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 63.6%.

Frequently Compared With GB/T 700 Q275A:
CSA G40.21 260W GOST 19281 09G2S AS/NZS 3679.1 300 CSA G40.21 300W AS/NZS 3679.1 350 CSA G40.21 350W CSA G40.21 400A CSA G40.21 400W CSA G40.21 480W ASTM A1008 SS Grade 80 ASTM A283C ASTM A572 Gr.65
Match Breakdown
CHEMISTRY MATCH
95.4%
MECHANICAL MATCH
0%
OVERALL
63.6%
Specifications
Property GB/T 700 Q275A ASTM A1008 SS Grade 50
Standard GB/T 700:2006 ASTM A1008
Category Structural Steel Structural Steel
C (%) <=0.24 <=0.20
Si (%) <=0.35 <=0.50
Mn (%) <=1.50 <=1.35
P (%) <=0.045 <=0.040
S (%) <=0.050 <=0.040
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 Q275A ASTM A1008 SS Grade 50
Tensile Strength 410-540 MPa 380 MPa min
Yield Strength >=275 MPa 340 MPa min
Elongation >=22% 14% min
Condition Hot rolled, controlled rolled or normalized; yield up to 16 mm, elongation up to 40 mm (N/mm2 = MPa) Not specified
Typical Applications
GB/T 700 Q275A
Hot rolled structural sheets, strips, sections and bars for welding, riveting and bolting engineering
ASTM A1008 SS Grade 50
Cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength
Can GB/T 700 Q275A Be Substituted With ASTM A1008 SS Grade 50?
GB/T 700 Q275A and ASTM A1008 SS Grade 50 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 Q275A
No active listings currently.
ASTM A1008 SS Grade 50
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–3400 mm (106.3–133.86 in)
On M-EX Right Now
GB/T 700 Q275A
0 active listings and RFQs →
ASTM A1008 SS Grade 50
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 700 Q275A and ASTM A1008 SS Grade 50?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 700 Q275A be substituted with ASTM A1008 SS Grade 50?
GB/T 700 Q275A and ASTM A1008 SS Grade 50 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.