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EN 10028-2 P355GH vs GB/T 1591 Q355NB

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

EN 10028-2 P355GH (EN 10028-2:2017) and GB/T 1591 Q355NB (GB/T 1591:2018) are both steel grades. EN 10028-2 P355GH is classified under Carbon Steel, while GB/T 1591 Q355NB is classified under Structural Steel — a different category, which is worth noting alongside the chemistry match below. EN 10028-2 P355GH is typically used for flat products for pressure purposes, while GB/T 1591 Q355NB is commonly used for general structure for engineering (plates, strips, bars and sections). EN 10028-2 P355GH 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 10028-2 P355GH vs GB/T 1591 Q355NB is a 73.4% match. As per mechanical properties, the match is 55.6%. Combined, this makes them a related material overall at 65%.

Frequently Compared With EN 10028-2 P355GH:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40
Match Breakdown
CHEMISTRY MATCH
73.4%
MECHANICAL MATCH
55.6%
OVERALL
65%
Specifications
Property EN 10028-2 P355GH GB/T 1591 Q355NB
Standard EN 10028-2:2017 GB/T 1591:2018
Category Carbon Steel Structural Steel
C (%) 0.10-0.22 <=0.20
Si (%) <=0.60 <=0.50
Mn (%) 1.10-1.70 0.90-1.65
P (%) <=0.025 <=0.035
S (%) <=0.010 <=0.035
Nb (%) <=0.040 0.005-0.05
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
Ni (%) <=0.30 <=0.50
Ti (%) <=0.03 0.006-0.05
V (%) <=0.02 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 10028-2 P355GH GB/T 1591 Q355NB
Tensile Strength 510-650 MPa 470-630 MPa
Yield Strength >=355 MPa >=355 MPa
Elongation >=20% >=22%
Condition Usual delivery condition normalized (+N), nominal thickness up to 16 mm; transverse direction, Yield Strength is ReH, Elongation is A Normalized or normalizing rolled, nominal thickness or diameter up to 16 mm (tensile strength: up to 100 mm)
Typical Applications
EN 10028-2 P355GH
Flat products for pressure purposes
GB/T 1591 Q355NB
General structure for engineering (plates, strips, bars and sections)
Key Differences
Can EN 10028-2 P355GH Be Substituted With GB/T 1591 Q355NB?
EN 10028-2 P355GH 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 10028-2 P355GH
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GB/T 1591 Q355NB
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Frequently Asked Questions
What is the difference between EN 10028-2 P355GH and GB/T 1591 Q355NB?
Different category: EN 10028-2 P355GH is Carbon Steel, GB/T 1591 Q355NB is Structural Steel.
Can EN 10028-2 P355GH be substituted with GB/T 1591 Q355NB?
EN 10028-2 P355GH 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.