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GB/T 1591 Q355B vs IS 11169 (Part 1) 40Ni14

Related Material — 65% match based on chemical composition and mechanical property overlap.

GB/T 1591 Q355B (GB/T 1591:2018) and IS 11169 (Part 1) 40Ni14 (IS 11169 (Part 1):1984) are both steel grades. GB/T 1591 Q355B is classified under Structural Steel, while IS 11169 (Part 1) 40Ni14 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. GB/T 1591 Q355B is typically used for general structure for engineering (plates, strips, bars and sections), while IS 11169 (Part 1) 40Ni14 is commonly used for cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1). GB/T 1591 Q355B is defined under Guobiao Standards (GB/T), originating from China, while IS 11169 (Part 1) 40Ni14 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 1591 Q355B vs IS 11169 (Part 1) 40Ni14 is a 68.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With GB/T 1591 Q355B:
GOST 19281 09G2S CSA G40.21 400W CSA G40.21 480W ASTM A283C CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 300W AS/NZS 3679.1 350 CSA G40.21 350W CSA G40.21 400A ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
68.7%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property GB/T 1591 Q355B IS 11169 (Part 1) 40Ni14
Standard GB/T 1591:2018 IS 11169 (Part 1):1984
Category Structural Steel Alloy Steel
C (%) <=0.24 0.35-0.45
Si (%) <=0.55 0.10-0.35
Mn (%) <=1.60 0.50-0.80
P (%) <=0.035 Not specified
S (%) <=0.035 Not specified
Cr (%) <=0.30 <=0.30
Ni (%) <=0.30 3.20-3.60
Cu (%) <=0.40 Not specified
N (%) <=0.012 Not specified
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 1591 Q355B IS 11169 (Part 1) 40Ni14
Tensile Strength 470-630 MPa Not specified
Yield Strength >=355 MPa Not specified
Elongation >=22% Not specified
Condition Hot-rolled (as-rolled), nominal thickness or diameter up to 16 mm for yield; tensile strength for up to 100 mm; elongation longitudinal, up to 40 mm Not specified
Hardness, annealed Not specified <=190 HB
Typical Applications
GB/T 1591 Q355B
General structure for engineering (plates, strips, bars and sections)
IS 11169 (Part 1) 40Ni14
Cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1)
Key Differences
Can GB/T 1591 Q355B Be Substituted With IS 11169 (Part 1) 40Ni14?
GB/T 1591 Q355B and IS 11169 (Part 1) 40Ni14 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.
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GB/T 1591 Q355B
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IS 11169 (Part 1) 40Ni14
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Frequently Asked Questions
What is the difference between GB/T 1591 Q355B and IS 11169 (Part 1) 40Ni14?
Different category: GB/T 1591 Q355B is Structural Steel, IS 11169 (Part 1) 40Ni14 is Alloy Steel. GB/T 1591 Q355B specifies P, S, Cu, N which are not specified for IS 11169 (Part 1) 40Ni14.
Can GB/T 1591 Q355B be substituted with IS 11169 (Part 1) 40Ni14?
GB/T 1591 Q355B and IS 11169 (Part 1) 40Ni14 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.