Strong Match — 97.4% match
based on chemical composition and mechanical property overlap.
GB/T 1591 Q420ND (GB/T 1591:2018) and EN 10025-3 S420NL (EN 10025-3:2019) are both steel grades.
Both fall under the Structural Steel category.
GB/T 1591 Q420ND is defined under Guobiao Standards (GB/T), originating from China, while EN 10025-3 S420NL is defined under European Standard (EN), originating from Europe.
As per chemical composition, GB/T 1591 Q420ND vs EN 10025-3 S420NL is a 96.1% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 97.4%.
Other Structural Steel Grades to Compare With GB/T 1591 Q420ND:
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 Q420ND
EN 10025-3 S420NL
Tensile Strength
520-680 MPa
520-680 MPa
Yield Strength
>=420 MPa
>=420 MPa
Elongation
>=19%
>=19%
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 Q420ND
General structure for engineering (plates, strips, bars and sections)
EN 10025-3 S420NL
Not documented
Can GB/T 1591 Q420ND Be Substituted With EN 10025-3 S420NL?
GB/T 1591 Q420ND and EN 10025-3 S420NL overlap closely enough on chemistry and mechanical properties that EN 10025-3 S420NL is often considered as a substitute for GB/T 1591 Q420ND 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 GB/T 1591 Q420ND and EN 10025-3 S420NL?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 1591 Q420ND be substituted with EN 10025-3 S420NL?
GB/T 1591 Q420ND and EN 10025-3 S420NL overlap closely enough on chemistry and mechanical properties that EN 10025-3 S420NL is often considered as a substitute for GB/T 1591 Q420ND in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.