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GB/T 1591 Q355NC vs EN 10025-3 S355N

Strong Match — 98% match based on chemical composition and mechanical property overlap.

GB/T 1591 Q355NC (GB/T 1591:2018) and EN 10025-3 S355N (EN 10025-3:2019) are both steel grades. Both fall under the Structural Steel category. GB/T 1591 Q355NC is defined under Guobiao Standards (GB/T), originating from China, while EN 10025-3 S355N is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 1591 Q355NC vs EN 10025-3 S355N is a 97% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 98%.

Other Structural Steel Grades to Compare With GB/T 1591 Q355NC:
GOST 19281 09G2S 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 CSA G40.21 400W CSA G40.21 480W ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
97%
MECHANICAL MATCH
100%
OVERALL
98%
Specifications
Property GB/T 1591 Q355NC EN 10025-3 S355N
Standard GB/T 1591:2018 EN 10025-3:2019
Category Structural Steel Structural Steel
C (%) <=0.20 <=0.20
Si (%) <=0.50 <=0.50
Mn (%) 0.90-1.65 0.90-1.65
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.025
Nb (%) 0.005-0.05 <=0.05
V (%) 0.01-0.12 <=0.12
Ti (%) 0.006-0.05 <=0.05
Cr (%) <=0.30 <=0.30
Ni (%) <=0.50 <=0.50
Cu (%) <=0.40 <=0.55
Mo (%) <=0.10 <=0.10
N (%) <=0.015 <=0.015
Al (%) >=0.015 >=0.02
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 Q355NC EN 10025-3 S355N
Tensile Strength 470-630 MPa 470-630 MPa
Yield Strength >=355 MPa >=355 MPa
Elongation >=22% >=22%
Condition Normalized or normalizing rolled, nominal thickness or diameter up to 16 mm (tensile strength: up to 100 mm) Normalized or normalized rolled (N), nominal thickness up to 16 mm (tensile strength up to 100 mm), Table 4
Typical Applications
GB/T 1591 Q355NC
General structure for engineering (plates, strips, bars and sections)
EN 10025-3 S355N
Not documented
Can GB/T 1591 Q355NC Be Substituted With EN 10025-3 S355N?
GB/T 1591 Q355NC and EN 10025-3 S355N overlap closely enough on chemistry and mechanical properties that EN 10025-3 S355N is often considered as a substitute for GB/T 1591 Q355NC in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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GB/T 1591 Q355NC
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EN 10025-3 S355N
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Frequently Asked Questions
What is the difference between GB/T 1591 Q355NC and EN 10025-3 S355N?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 1591 Q355NC be substituted with EN 10025-3 S355N?
GB/T 1591 Q355NC and EN 10025-3 S355N overlap closely enough on chemistry and mechanical properties that EN 10025-3 S355N is often considered as a substitute for GB/T 1591 Q355NC in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.