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EN 10028-3 P355NL2 vs GB/T 1591 Q355NB

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

EN 10028-3 P355NL2 (EN 10028-3:2017) and GB/T 1591 Q355NB (GB/T 1591:2018) are both steel grades. EN 10028-3 P355NL2 is classified under Alloy Steel, while GB/T 1591 Q355NB is classified under Structural Steel — a different category, which is worth noting alongside the chemistry match below. EN 10028-3 P355NL2 is typically used for flat products for pressure equipment, while GB/T 1591 Q355NB is commonly used for general structure for engineering (plates, strips, bars and sections). EN 10028-3 P355NL2 is defined under European Standard (EN), originating from Europe, while GB/T 1591 Q355NB is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, EN 10028-3 P355NL2 vs GB/T 1591 Q355NB is a 85.7% match. As per mechanical properties, the match is 95.8%. Combined, this makes them a related material overall at 65%.

Frequently Compared With EN 10028-3 P355NL2:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
85.7%
MECHANICAL MATCH
95.8%
OVERALL
65%
Specifications
Property EN 10028-3 P355NL2 GB/T 1591 Q355NB
Standard EN 10028-3:2017 GB/T 1591:2018
Category Alloy Steel Structural Steel
C (%) <=0.18 <=0.20
Si (%) <=0.50 <=0.50
Mn (%) 1.10-1.70 0.90-1.65
P (%) <=0.020 <=0.035
S (%) <=0.005 <=0.035
Al (%) >=0.020 >=0.015
N (%) <=0.012 <=0.015
Cr (%) <=0.30 <=0.30
Cu (%) <=0.30 <=0.40
Mo (%) <=0.08 <=0.10
Nb (%) <=0.05 0.005-0.05
Ni (%) <=0.50 <=0.50
Ti (%) <=0.03 0.006-0.05
V (%) <=0.10 0.01-0.12
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10028-3 P355NL2 GB/T 1591 Q355NB
Tensile Strength 490-630 MPa 470-630 MPa
Yield Strength >=355 MPa >=355 MPa
Elongation >=22% >=22%
Condition Normalized, nominal thickness up to 16 mm Normalized or normalizing rolled, nominal thickness or diameter up to 16 mm (tensile strength: up to 100 mm)
Typical Applications
EN 10028-3 P355NL2
Flat products for pressure equipment
GB/T 1591 Q355NB
General structure for engineering (plates, strips, bars and sections)
Key Differences
Can EN 10028-3 P355NL2 Be Substituted With GB/T 1591 Q355NB?
EN 10028-3 P355NL2 and GB/T 1591 Q355NB 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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EN 10028-3 P355NL2
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Frequently Asked Questions
What is the difference between EN 10028-3 P355NL2 and GB/T 1591 Q355NB?
Different category: EN 10028-3 P355NL2 is Alloy Steel, GB/T 1591 Q355NB is Structural Steel.
Can EN 10028-3 P355NL2 be substituted with GB/T 1591 Q355NB?
EN 10028-3 P355NL2 and GB/T 1591 Q355NB 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.