EN 10028 3 P460NH STEEL Steel Plate Specifications

EN 10028-3 P460NH (1.8935) is a weldable fine-grain elevated-temperature pressure-vessel steel plate supplied in the normalized (+N) condition. This specification page covers grade identity, ladle chemistry, thickness-dependent tensile properties (including elongation minimum 16% across thickness bands), related NL grades, and RFQ practice. Accept material against EN 10028-3:2017 (or the ordered edition) and the mill test certificate.

Grade Identity and Delivery Condition

P460NH belongs to the EN 10028-3 nickel-alloyed / micro-alloyed fine-grain family for pressure purposes at elevated temperature (NH). Normalized delivery (+N) is the standard route. P460NL1 and P460NL2 share the strength family but specify lower impact temperatures for low-temperature service - they are related grades, not automatic substitutes for NH when the dossier names P460NH.

Chemical Composition - Cast Analysis (EN 10028-3 P460NH)

Ladle / cast analysis limits. Product analysis tolerances apply per EN 10028-3. Confirm Nb+Ti+V and residual element rules on the MTC.

Element	% by mass
C, max	0.20
Si, max	0.60
Mn	1.10-1.70
P, max	0.025
S, max	0.010
Al total, min	0.020
N, max	0.025
Cr, max	0.30
Cu, max	0.70
Mo, max	0.10
Nb, max	0.05
Ni, max	0.80
Ti, max	0.03
V, max	0.20
Nb+Ti+V, max	0.22

Mechanical Properties - Normalized (+N), Transverse

Minimum yield (ReH), tensile (Rm), and elongation (A) by thickness. Elongation minimum is 16% for all listed thickness bands. Impact energy for NH is verified at the temperature required by EN 10028-3 / the order (typically room-temperature option for NH - confirm edition table).

Thickness t (mm)	ReH min (MPa)	Rm (MPa)	A min %
<=16	460	570-730	16
16 < t <= 40	445	570-720	16
40 < t <= 60	430	570-720	16
60 < t <= 100	400	540-710	16
100 < t <= 150	380	520-690	16
150 < t <= 250	370	510-690	16

Related / Near-Equivalent Grades

Near-equivalents are for cross-reference only. Substitution requires engineer / notified-body approval and matching certificate scope.

System	Grade	Note
EN 10028-3	P460NL1 / P460NL2	Same strength family, lower impact temperatures
EN 10028-3	P355NH	Lower yield class
ASTM	A537 Class 1 / A516 (approx.)	Not identical - verify code calculation
Steel number	1.8935	EN designation

Frequently Asked Questions

What is EN 10028-3 P460NH steel plate?

P460NH (1.8935) is a normalized fine-grain pressure-vessel steel under EN 10028-3 for elevated-temperature service. At t<=16 mm the minimum yield is 460 MPa with Rm 570-730 MPa and minimum elongation 16%. It is ordered when PED/EN dossiers name P460NH specifically.

What chemical composition applies to P460NH?

Cast analysis limits include C max 0.20%, Mn 1.10-1.70%, P max 0.025%, S max 0.010%, Al total min 0.020%, and Nb+Ti+V max 0.22%, with Cr/Cu/Mo/Ni/Ti/V caps as tabulated. Verify every controlled element on the MTC heat analysis for the ordered EN 10028-3 edition.

What mechanical properties should buyers expect by thickness?

ReH steps down with thickness: 460 MPa (<=16 mm), 445 MPa (16-40), 430 MPa (40-60), 400 MPa (60-100), 380 MPa (100-150), and 370 MPa (150-250). Rm bands follow the table above. Elongation minimum remains 16% in all listed bands. Design stresses come from the vessel code, not marketing text.

What delivery condition is required for P460NH?

Normalized (+N) is the EN 10028-3 delivery condition for P460NH. State +N on the purchase order. Do not confuse NH with NL1/NL2 impact options; those are separate grade designations for low-temperature toughness.

How does P460NH differ from P460NL1/NL2 or P355NH?

NL1/NL2 keep the P460 strength family but specify colder impact test temperatures for low-temperature pressure equipment. P355NH is a lower yield class in the NH series. None of these is an automatic substitute when the dossier names P460NH.

How do I RFQ EN 10028-3 P460NH from Gangsteel?

Send EN 10028-3 P460NH (1.8935), thickness x width x length, quantity, +N delivery, impact temperature if specified beyond the NH default, optional UT/Z quality, EN 10204 3.1 or 3.2, destination, and any dual-mark needs. Gangsteel replies with mill options, lead time, and packing notes.

Ordering and Mill Certificates

State grade EN 10028-3 P460NH (1.8935), dimensions, quantity, delivery condition, optional NDT/PMI, and certificate (EN 10204 3.1 standard; 3.2 when third-party inspection is ordered). Gangsteel supplies export plate and related products with mill test certificates. Contact Gangsteel for stock and mill production RFQs.