Strong Match — 98% match
based on chemical composition and mechanical property overlap.
EN 10025-3 S355N (EN 10025-3:2019) and GB/T 1591 Q355NC (GB/T 1591:2018) are both steel grades.
Both fall under the Structural Steel category.
EN 10025-3 S355N is defined under European Standard (EN), originating from Europe, while GB/T 1591 Q355NC is defined under Guobiao Standards (GB/T), originating from China.
As per chemical composition, EN 10025-3 S355N vs GB/T 1591 Q355NC is a 97% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 98%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10025-3 S355N
GB/T 1591 Q355NC
Tensile Strength
470-630 MPa
470-630 MPa
Yield Strength
>=355 MPa
>=355 MPa
Elongation
>=22%
>=22%
Condition
Normalized or normalized rolled (N), nominal thickness up to 16 mm (tensile strength up to 100 mm), Table 4
Normalized or normalizing rolled, nominal thickness or diameter up to 16 mm (tensile strength: up to 100 mm)
Typical Applications
EN 10025-3 S355N
Not documented
GB/T 1591 Q355NC
General structure for engineering (plates, strips, bars and sections)
Can EN 10025-3 S355N Be Substituted With GB/T 1591 Q355NC?
EN 10025-3 S355N and GB/T 1591 Q355NC overlap closely enough on chemistry and mechanical properties that GB/T 1591 Q355NC is often considered as a substitute for EN 10025-3 S355N in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between EN 10025-3 S355N and GB/T 1591 Q355NC?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10025-3 S355N be substituted with GB/T 1591 Q355NC?
EN 10025-3 S355N and GB/T 1591 Q355NC overlap closely enough on chemistry and mechanical properties that GB/T 1591 Q355NC is often considered as a substitute for EN 10025-3 S355N in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.