Gangsteel supplies EN 10028-5 P460M steel plate for boilers, pressure vessels and other pressure equipment that specify this weldable fine-grain steel in the thermomechanically rolled condition. P460M (steel number 1.8826) is the basic series in the P460 strength class of EN 10028-5, together with EN 10028-5 P460ML1, EN 10028-5 P460ML2. The usual delivery condition is thermomechanically rolled (+M). These steels are not suitable for hot forming. This is not the normalized condition of EN 10028-3 and not the quenched and tempered condition of EN 10028-6. Within the pressure-vessel and boiler steel plate range, Gangsteel coordinates mill production, plate processing and export supply around the contractual edition and the requirements of each order.
This page is a full-site official-style product-body remediation under the existing parent category pressure-vessel and boiler steel plate. It is not part of the named official-product-standards hubs, and no child EN 10028-5 taxonomy is created. The current published edition is EN 10028-5:2017 (BS EN 10028-5:2017, 31 August 2017; approved by CEN on 7 May 2017), which supersedes EN 10028-5:2009. The general requirements of EN 10028-1:2017 also apply. Delivery-condition wording, quality designations, the statement that these steels are not suitable for hot forming, and the statement that elevated-temperature properties were not standardized, follow the official EN 10028-5:2017 text (SIST EN 10028-5:2017 preview, complete through clause 12). Cast-analysis chemistry is taken from EN 10028-5:2009 Table 1, as recovered from two consistent official-text extracts (DIN EN 10028-5:2009 and SANS 50028-5:2009). The 2009 edition expressly lowered the maximum sulphur contents relative to EN 10028-5:2003, which was visually confirmed on the official 2003 Table 1. BSI’s published summary of the 2017 revision lists revised normative references, deletion of one- and two-dot markings, removal of notes 1 and 2 in subclause 8.2.2, an Annex ZA update to Directive 2014/68/EU, and “clarification on various technical requirements”; it does not list a further revision of the 2009 tabulated chemistry. Room-temperature tensile properties (Table 4), transverse impact energy (Table 5) and optional carbon-equivalent values (Table 3) are the official EN 10028-5:2003 values for the specified thickness and temperature bands, visually confirmed on the official British Standard pages, including the P355 yield-strength cell merge (355 MPa through 40 mm). Official 2017 Table 1, Table 3, Table 4 and Table 5 pages were not obtained in this pass. EN 10028-5:2017 Note 1 states that, at publication, sufficient data were not available to standardize elevated-temperature properties; this page therefore does not tabulate EN 10028-5 Rp0,2 values. The nine grades on this site are the complete EN 10028-5 Table 1 set; no pages are invented. EN 10028-2 P265GH is an existing EN 10028-2 product page (category 1) linked where relevant and is not redrafted here. EN 10028-6 product pages that already exist are linked as related family pages only and are not drafted in this pass. No figure from EN 10028-2, EN 10028-3, EN 10028-6, EN 10025-4, ASTM or ASME is presented as an EN 10028-5 requirement. The contractual edition named on the purchase order, the mill certificate and EN 10028-1 govern.
Grade Designation
- EN 10028-5 — Flat products made of steels for pressure purposes, Part 5: Weldable fine grain steels, thermomechanically rolled.
- P460M — steel name in EN 10028-5 Table 1; steel number 1.8826. P denotes a steel for pressure purposes; 460 is the specified minimum yield strength in MPa at t ≤ 16 mm; M marks the thermomechanically rolled condition and, without a further L letter, the basic series.
- Quality — basic series (EN 10028-5:2017 clause 6.1.1 (a)). The three qualities in this part are the basic series (P…M), the low-temperature series down to −40 °C (P…ML1) and the low-temperature series down to −50 °C (P…ML2).
- Classification — alloy special steel in accordance with EN 10020:2000 (EN 10028-5:2017 clause 6.1.2). All Table 1 grades in this part are alloy special steels.
- Usual delivery condition — +M (thermomechanically rolled). Products shall be supplied in the thermomechanically rolled condition (clause 8.2.1). They are not suitable for hot forming.
Key Advantages of EN 10028-5 P460M Steel Plate
- Weldable fine-grain steel for pressure equipment, supplied in the thermomechanically rolled (+M) condition specified by EN 10028-5 for P460M.
- Thickness-dependent room-temperature yield, with a tensile range and elongation that apply through the tabulated maximum of 63 mm, shared by the M, ML1 and ML2 qualities of the P460 class (Table 4).
- Specified transverse Charpy impact energy in Table 5 for the basic series, with a design impact temperature of −20 °C.
- A lower carbon equivalent than many normalized 355–460 MPa pressure-vessel grades of the same yield class, when a Table 3 CEV is agreed; CEV itself remains an ordering option.
- Not a substitute for a normalized EN 10028-3 grade or a quenched and tempered EN 10028-6 grade; the thermomechanical delivery and the prohibition on hot forming are part of the specification.
Chemical Composition of EN 10028-5 P460M Steel Plate
| Element | Cast (heat) analysis, mass % |
|---|---|
| C | ≤ 0.16 |
| Si | ≤ 0.60 |
| Mn | ≤ 1.70 |
| P | ≤ 0.025 |
| S | ≤ 0.010 |
| Al total | ≥ 0.020 |
| N | ≤ 0.020 |
| Mo | ≤ 0.20 |
| Nb | ≤ 0.05 |
| Ni | ≤ 0.50 |
| Ti | ≤ 0.05 |
| V | ≤ 0.10 |
| Nb + V + Ti | ≤ 0.15 |
Figures are EN 10028-5:2009 Table 1 cast (heat) analysis limits for P460M, from two consistent official-text extracts of that table. The 2009 edition lowered the maximum sulphur contents relative to the official 2003 Table 1. BSI’s 2017 change list does not record a further tabulated-chemistry revision. Official 2017 Table 1 pages were not obtained. Product-analysis tolerances are specified in Table 2 and must not be applied as heat-analysis limits. A maximum carbon equivalent CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15 may be agreed (Table 3 / clause 8.3.3) and is not an automatic requirement: t ≤ 16: 0.45 %, 16 < t ≤ 40: 0.46 %, 40 < t ≤ 63: 0.47 % (official 2003 Table 3, visually confirmed).
For each reduction of 0.02 % below the maximum carbon content, an increase of 0.05 % Mn above the specified maximum is permitted, up to a maximum of 2.00 % Mn (2009 Table 1 footnote b). The aluminium content of the cast shall be determined and given in the inspection document; the aluminium minimum does not apply if adequate contents of other nitrogen-fixing elements are present. The sum of chromium, copper and molybdenum shall not exceed 0.60 %. The total of V + Nb + Ti shall not exceed 0.15 %. If carbon is restricted to ≤ 0.07 %, a maximum niobium content of 0.10 % is permitted, with special care for the heat-affected zone at −40 °C and below or after PWHT (2009 footnote g). Elements not listed shall not be added intentionally without the purchaser’s agreement, except for finishing the cast.
Mechanical Properties of EN 10028-5 P460M Steel Plate
| Usual delivery condition | Product thickness t (mm) | Yield strength ReH min (MPa) | Tensile strength Rm (MPa) | Elongation A min (%) |
|---|---|---|---|---|
| +M | t ≤ 16 | 460 | 530–720 | 17 |
| +M | 16 < t ≤ 40 | 440 | 530–720 | 17 |
| +M | 40 < t ≤ 63 | 430 | 530–720 | 17 |
Room-temperature tensile properties are EN 10028-5 Table 4 values for the specified thickness bands, in the thermomechanically rolled condition. They are shared by the M, ML1 and ML2 qualities of the P460 class, through the tabulated maximum of 63 mm. The figures are the official EN 10028-5:2003 Table 4 values, visually confirmed including cell merges: for the P355 grades, the 355 MPa minimum applies through 40 mm (not only through 16 mm). The yield strength to be determined is the upper yield strength ReH or, if that is not pronounced, the 0,2 % proof strength Rp0,2. The 2017 edition is current; official 2017 Table 4 pages were not obtained, and BSI’s 2017 change list does not record a revision of these specified-band figures. These values must not be read as EN 10028-3 normalized or EN 10028-6 quenched and tempered requirements: Part 3 P355, for example, uses a different Rm range (starting at 490–630 MPa) and a different yield step at 16 mm and 40 mm.
Minimum impact energy KV, transverse (J)
| Quality | Orientation | −50 °C | −40 °C | −20 °C | 0 °C | +20 °C |
|---|---|---|---|---|---|---|
| P…M (this grade) | Transverse | — | — | 27 | 40 | 60 |
| P…ML1 | Transverse | — | 27 | 40 | 60 | — |
| P…ML2 | Transverse | 27 | 40 | 60 | 80 | — |
Minimum impact energy KV, in joules, from EN 10028-5 Table 5, official 2003 text, visually confirmed. The official table heading states that the values are valid for transverse test pieces. Longitudinal values are not given in that table and are not invented here. The same table applies to every strength class in this part and is arranged by quality. P460M is the basic series; its design impact temperature is −20 °C. The thickness range is 5 mm to 63 mm. A dash means no value is specified at that temperature. EN 10028-5:2017 option 3 allows a 40 J minimum to be specified where lower Table 5 minima are given (Table 5 footnote a / clause 8.4). Option 4 / clause 10 allows mid-thickness impact test pieces, with temperatures and energy values then also agreed. Official 2017 Table 5 pages were not obtained; BSI’s 2017 change list does not record a revision of these specified-band figures.
EN 10028-5 does not specify standardized elevated-temperature 0,2 % proof-strength values. Clause 1, Note 1 of EN 10028-5:2017 states that, at the time of publication, sufficient data for the standardization of elevated-temperature properties of these steels were not available. If the use of P460M at such temperatures is intended, the conditions shall be specially agreed between the interested parties. This page does not tabulate EN 10028-5 Rp0,2 figures, and no EN 10028-2 or EN 10028-3 proof-stress table is presented as a Part 5 requirement.
Delivery Condition, Tests and Heat Treatment
Products of P460M shall be supplied in the thermomechanically rolled condition (EN 10028-5:2017 clause 8.2.1). The steels specified in this part are not suitable for hot forming. The usual Part 5 delivery is therefore thermomechanical rolling (+M). It is not the normalized or normalizing-rolled condition of EN 10028-3 and not the quenched and tempered condition of EN 10028-6. Subsequent hot forming would destroy the thermomechanical property set that Table 4 and Table 5 are written for.
Information on weldability is given in informative Annex A (clause 8.2.2). EN 1011-1 and EN 1011-2 are normative references of the 2017 edition. BSI’s 2017 change list records that notes 1 and 2 in subclause 8.2.2 on welding conditions were removed; those deleted notes are not reproduced here as current requirements. Excessive post-weld heat treatment can reduce the mechanical properties of thermomechanically rolled plate; the contractual edition and the mill procedure govern any PWHT. Inspection documents, surface condition and internal soundness follow EN 10028-1. Ultrasonic testing, through-thickness properties (EN 10164) and any hydrogen-induced-cracking test are ordering options and are not assumed on every P460M plate.
Available Dimensions of EN 10028-5 P460M Steel Plate
Gangsteel supplies EN 10028-5 P460M plate in thicknesses within the Table 4 bands for this grade, up to the tabulated maximum of 63 mm. Width, length, quantity and processing (cutting, beveling or forming to agreed drawings, consistent with the prohibition on hot forming) are confirmed against each enquiry. Dimensional tolerances follow EN 10028-1. This page does not list a standing stock inventory and does not invent available sizes.
Main Applications of EN 10028-5 P460M Steel Plate
EN 10028-5 P460M is used for boilers, pressure vessels, heat-exchanger shells, storage tanks and other pressure equipment specified as this basic series in the P460 yield class, for pressure service that specifies the basic-series impact properties (Table 5 down to −20 °C), where a thermomechanically rolled fine-grain plate is required and hot forming is not part of the fabrication route. It is specified under EN 10028-5 together with EN 10028-1, and may be used in equipment in the scope of Directive 2014/68/EU when the contractual edition and Annex ZA relationship are part of the order. This page does not itself certify PED conformity. P460M is not selected in place of an EN 10028-3 normalized grade, an EN 10028-6 quenched and tempered grade, an EN 10028-2 GH grade, or an ASME Section II material unless the design specification explicitly allows that change. M, ML1 and ML2 qualities of the same strength class share Table 4 tensile properties but are not automatic substitutes for one another. Because elevated-temperature properties are not standardized in this part, P460M is not assumed to carry EN 10028-2-style Rp0,2 values.
Equivalent Grades of EN 10028-5 P460M Steel Plate
The comparisons below use only existing Gangsteel product pages. A similar yield class or a related M/ML quality letter is not a universal equivalence. Substitution requires the design specification, the contractual edition and, where applicable, the notified body or purchaser. No missing EN 10028-5 Table 1 grade is invented: the nine pages in this set are the complete Table 1 list.
| Standard | Grade | Relationship (not automatic substitution) |
|---|---|---|
| EN 10028-5 | P460ML1 | Same Table 4 tensile class, same thermomechanical delivery, and the same strength-class chemistry except the ML phosphorus and sulphur limits. P460ML1 is the low-temperature series down to −40 °C, with Table 5 impact at −40 °C. It is not an automatic substitute for P460M. |
| EN 10028-5 | P460ML2 | Same Table 4 tensile class, same thermomechanical delivery, and the same strength-class chemistry except the ML phosphorus and sulphur limits. P460ML2 is the low-temperature series down to −50 °C, with Table 5 impact at −50 °C. It is not an automatic substitute for P460M. |
| EN 10028-3 | P460NH, P460NL1, P460NL2 | Normalized Part 3 grades in the 460 class. Different delivery, chemistry and tabulated thickness (Part 3 Table 4 extends through 100 mm; Part 5 is tabulated through 63 mm). Not automatic substitutes for P460M. There is no EN 10028-3 P460N page, and P460N is not in 2017 Table 1. |
| EN 10028-6 | P460Q, P460QH, P460QL1, P460QL2 | Quenched and tempered Part 6 grades in the 460 class. Existing pages, not drafted in this batch. Not the TM condition of P460M. |
| EN 10025-4 | S460M / S460ML | Thermomechanically rolled fine-grain structural steels, not EN 10028 pressure-vessel steels. Not equivalent to P460M. |
| ASTM / ASME | ASTM A516 Grade 70 / ASME SA516 Grade 70 | Lower-yield carbon plates under a different standard. Not equivalent to P460M. |
Related Products
- EN 10028-5 P355M steel plate
- EN 10028-5 P355ML1 steel plate
- EN 10028-5 P355ML2 steel plate
- EN 10028-5 P420M steel plate
- EN 10028-5 P420ML1 steel plate
- EN 10028-5 P420ML2 steel plate
- EN 10028-5 P460ML1 steel plate
- EN 10028-5 P460ML2 steel plate
- EN 10028-3 P355NH steel plate
- EN 10028-3 P355NL2 steel plate
- EN 10028-3 P460NH steel plate
- EN 10028-2 P355GH steel plate
- EN 10028-2 P265GH steel plate
- EN 10028-6 P460Q steel plate
- EN 10028-6 P460QL2 steel plate
- EN 10025-4 S460M steel plate
- EN 10025-4 S460ML steel plate
- Pressure-vessel and boiler steel plate
FAQ about EN 10028-5 P460M Steel Plate
What is EN 10028-5 P460M steel plate?
EN 10028-5 P460M (steel number 1.8826) is a weldable fine-grain steel for pressure purposes in EN 10028-5 Table 1. It is the basic series of the P460 class, classified as an alloy special steel. It shall be supplied in the thermomechanically rolled condition and is not suitable for hot forming. It is not an EN 10028-3 normalized grade and not an EN 10028-6 quenched and tempered grade.
What is the steel number of EN 10028-5 P460M?
The steel number of EN 10028-5 P460M is 1.8826, as given in EN 10028-5 Table 1. P460M and 1.8826 are the steel name and steel number of the same grade, not two different specifications.
What is the chemical composition of EN 10028-5 P460M?
The Table 1 cast-analysis limits for EN 10028-5 P460M are given in the chemical-composition table on this page, including the ML phosphorus and sulphur limits that apply to this quality. Those figures are the 2009 Table 1 values (sulphur lowered relative to 2003). Product-analysis tolerances (Table 2) must not be used as heat-analysis limits. A maximum CEV may be agreed (Table 3) and is not an automatic requirement.
What are the mechanical properties of EN 10028-5 P460M at room temperature?
EN 10028-5 Table 4 gives thickness-dependent minimum ReH, an Rm range and a minimum elongation for EN 10028-5 P460M in the thermomechanically rolled condition, through 63 mm. The figures on this page are the official 2003 Table 4 values for those specified bands, visually confirmed. The 460 MPa in the grade name is the t ≤ 16 mm minimum yield, not automatically the yield at every thickness.
At what temperature is EN 10028-5 P460M impact-tested, and in which orientation?
EN 10028-5 Table 5 specifies transverse minima for the basic series of no specified values at −50 °C or −40 °C, 27 J at −20 °C, 40 J at 0 °C and 60 J at +20 °C. The official table is valid for transverse test pieces; longitudinal values are not given in that table. The thickness range is 5 mm to 63 mm. A 40 J minimum may be specified where lower Table 5 values are given (2017 option 3). Mid-thickness impact may be agreed (option 4). The design impact temperature associated with this quality is −20 °C.
Does EN 10028-5 P460M have specified elevated-temperature proof-stress values?
No. EN 10028-5:2017 Note 1 states that, at publication, sufficient data were not available to standardize elevated-temperature properties. If EN 10028-5 P460M is to be used at such temperatures, the conditions shall be specially agreed. This page does not tabulate Part 5 Rp0,2 figures and does not treat EN 10028-2 or EN 10028-3 proof-stress tables as Part 5 requirements.
What delivery condition is specified for EN 10028-5 P460M — TM, normalized or QT?
EN 10028-5 P460M shall be supplied in the thermomechanically rolled condition (clause 8.2.1). It is not suitable for hot forming. This is not the normalized or normalizing-rolled condition of EN 10028-3 and not the quenched and tempered condition of EN 10028-6. Hot forming after rolling would destroy the thermomechanical property set.
Is EN 10028-5 P460M the same as EN 10028-5 P460ML1?
No. P460M and P460ML1 share the P460 Table 4 tensile properties and the same thermomechanical delivery, but they are different qualities. P460M is the basic series (impact −20 °C); P460ML1 is the low-temperature series down to −40 °C (impact −40 °C). They are not automatic substitutes. Selection follows the design temperature and toughness requirement.
Is EN 10028-5 P460M equivalent to EN 10028-3 P460NH or to EN 10025-4 S460ML?
No. EN 10028-3 P460NH is a normalized Part 3 grade, with a different delivery and a different tabulated thickness range. EN 10025-4 S460ML is a thermomechanically rolled structural steel, not an EN 10028 pressure-vessel steel. Neither is a drop-in equivalent of EN 10028-5 P460M.
What thicknesses of EN 10028-5 P460M are available?
Gangsteel supplies EN 10028-5 P460M within the Table 4 thickness bands for this grade, up to the tabulated maximum of 63 mm. Width, length and processing are confirmed against each enquiry, consistent with the prohibition on hot forming. This page does not list a standing stock inventory.
What should an enquiry for EN 10028-5 P460M include?
An enquiry should name EN 10028-5 P460M (or steel number 1.8826), the contractual edition, product thickness and quantity, the required quality (this grade is the basic series), inspection document (EN 10204 3.1 or 3.2), and any agreed options: CEV (Table 3 / option 2), 40 J impact (option 3), mid-thickness impact (option 4), welding-condition data (option 1), ultrasonic testing, EN 10164 through-thickness properties, and any specially agreed elevated-temperature conditions (Note 1). Visit Gangsteel or contact Gangsteel to place the enquiry.
For production, processing and export enquiries for EN 10028-5 P460M steel plate, please contact Gangsteel. Visit Gangsteel for the full plate-supply range.