Gangsteel supplies EN 10028-2 10CrMo9-10 steel plate for boilers, pressure vessels and high-temperature equipment that specify this 2,25 % chromium–1 % molybdenum alloy steel with elevated-temperature properties. 10CrMo9-10 (steel number 1.7380) is an alloy special steel in EN 10028-2. It is not the same grade as EN 10028-2 12CrMo9-10 (steel number 1.7375), which has a tighter carbon and silicon specification and different tensile minima. 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 10028-2 taxonomy is created. The current published edition is EN 10028-2:2017 (BS EN 10028-2:2017, listed Current / Under Review by BSI, 31 August 2017), which supersedes EN 10028-2:2009. The general requirements of EN 10028-1:2017 also apply. A later EN 10028-2 revision has been reported in development (stage 40.10) and is not a published current edition; it is not used here. Cast-analysis chemistry and product-analysis tolerances are taken from the official EN 10028-2:2017 Table 1 and Table 2 (complete tables obtained from the SIST EN 10028-2:2017 preview). Room-temperature tensile, elongation and impact figures and elevated-temperature 0,2 % proof-stress (Rp0,2) figures are the official EN 10028-2:2009 Table 3 and Table 4 values for the specified thickness and temperature bands. BSI’s published summary of the 2017 revision states that the option to agree thicknesses greater than those stated in the standard, and the corresponding footnotes in Tables 3 and 4, were deleted; that 16Mo3 was included in subclause 8.2.2 on normalized forming; and that Annex ZA was updated to Directive 2014/68/EU. It does not list a revision of the tabulated property values in the specified bands. Indexed BS EN 10028-2:2017 Table 3 excerpts examined for this batch match those 2009 figures for every grade in this set. These pages do not treat thicknesses above the tabulated maxima as having agreed EN 10028-2 properties. The contractual edition named on the purchase order, the mill certificate and EN 10028-1 govern. P265GH (1.0425) and 20MnMoNi4-5 (1.6311) are Table 1 grades in the same part; EN 10028-2 P265GH is an existing Gangsteel product page outside this 14-page set and is linked where relevant. 20MnMoNi4-5 has no existing Gangsteel product page and is not invented. No figure from ASTM, ASME, DIN or EN 10028-3/-5/-6 is presented as an EN 10028-2 requirement.
Grade Designation
- EN 10028-2 — Flat products made of steels for pressure purposes, Part 2: non-alloy and alloy steels with specified elevated temperature properties.
- 10CrMo9-10 — steel name in EN 10028-2 Table 1; steel number 1.7380.
- Classification — alloy special steel in accordance with EN 10020 (EN 10028-2:2017, clause 6.1). The four non-alloy quality steels in this part are P235GH, P265GH, P295GH and P355GH; all other Table 1 grades are alloy special steels.
- Usual delivery condition — +NT (t ≤ 60 mm); +NT or +QT (60 < t ≤ 100 mm); +QT (100 < t ≤ 250 mm), as Table 3. +N means normalized, +NT normalized and tempered, and +QT quenched and tempered.
- Common written forms include EN10028-2 10CrMo9-10, 10CrMo9-10, 10 CrMo 9-10, 10CrMo910, 1.7380. Spacing and hyphenation variants refer to the same grade, not separate specifications.
- Use the complete designation, steel number and the contractual standard edition on the purchase order.
Key Advantages of EN 10028-2 10CrMo9-10 Steel Plate
- Specified elevated-temperature 0,2 % proof strength (Rp0,2) by thickness and temperature in EN 10028-2 Table 4, which is the defining property set of Part 2 for 10CrMo9-10.
- Thickness-dependent room-temperature yield, tensile and elongation minima in Table 3, applicable in the transverse direction, through the tabulated maximum of 250 mm.
- Usual delivery condition +NT (t ≤ 60 mm); +NT or +QT (60 < t ≤ 100 mm); +QT (100 < t ≤ 250 mm), with the Table 3 option that +QT may be agreed where +NT is the usual condition.
- 2,25 % Cr–1 % Mo alloy with Table 4 Rp0,2 values specified through 500 °C, used for higher-temperature pressure equipment.
- Optional tests in the standard — hydrogen-induced-cracking evaluation (Annex D) and, for Cr–Mo steels, a step-cooling embrittlement test (Annex E, clause 8.8) — may be specified at enquiry and order. They are not assumed on every plate.
- Plate processing can include cutting, beveling and forming to agreed drawings, without a universal welding or heat-treatment schedule being assumed.
Chemical Composition of EN 10028-2 10CrMo9-10 Steel Plate
| Element | Cast (heat) analysis, mass % |
|---|---|
| C | 0.08 to 0.14 |
| Si | ≤ 0.50 |
| Mn | 0.40 to 0.80 |
| P | ≤ 0.020 |
| S | ≤ 0.010 |
| Al total | determined and reported (e) |
| N | ≤ 0.012 |
| Cr | 2.00 to 2.50 |
| Cu | ≤ 0.30 |
| Mo | 0.90 to 1.10 |
| Nb | — |
| Ni | — |
| Ti | — |
| V | — |
Cast (heat) analysis, EN 10028-2:2017 Table 1.
Footnote e: the aluminium content of the cast shall be determined and given in the inspection document.
Footnote g: for nominal thicknesses greater than 150 mm, a maximum carbon content of 0.17 % may be agreed at enquiry and order.
Product analysis shall not deviate from the Table 1 limits by more than EN 10028-2:2017 Table 2. Elements not listed shall not be intentionally added without purchaser agreement, except for finishing the cast.
Mechanical Properties of EN 10028-2 10CrMo9-10 Steel Plate
| Usual delivery condition | Product thickness t (mm) | Yield strength ReH min (MPa) | Tensile strength Rm (MPa) | Elongation A min (%) | Impact −20 °C (J) | Impact 0 °C (J) | Impact +20 °C (J) |
|---|---|---|---|---|---|---|---|
| +NT | ≤ 16 | 310 | 480–630 | 18 | agreedf | agreedf | 31g |
| +NT | 16 < t ≤ 40 | 300 | 480–630 | 18 | agreedf | agreedf | 31g |
| +NT | 40 < t ≤ 60 | 290 | 480–630 | 18 | agreedf | agreedf | 31g |
| +NT or +QT | 60 < t ≤ 100 | 280 | 470–620 | 17 | agreedf | agreedf | 27g |
| +QT | 100 < t ≤ 150 | 260 | 460–610 | 17 | agreedf | agreedf | 27g |
| +QT | 150 < t ≤ 250 | 250 | 450–600 | 17 | agreedf | agreedf | 27g |
Room-temperature tensile properties and impact energy apply in the transverse direction, in the usual delivery condition of EN 10028-2 Table 3, for the listed thickness bands. Indexed EN 10028-2:2017 Table 3 headings use KV2; the 2009 official table used KV. The figures themselves are the sourced Table 3 minima for these bands.
f A value may be agreed at the time of enquiry and order. g A minimum impact energy of 40 J may be agreed at the time of enquiry and order. +N = normalized; +NT = normalized and tempered; +QT = quenched and tempered. Where the usual delivery condition is +NT, +QT may be agreed.
EN 10028-2:2017 deleted the option to agree mechanical properties for thicknesses greater than the tabulated maxima. This page does not state agreed values above those maxima. Mid-thickness impact test pieces, and the associated temperatures and energy values, may be agreed (2017 option 14 / clause 10).
Minimum 0,2 % proof strength at elevated temperature (Rp0,2, MPa)
| Product thickness t (mm) | 50 °C | 100 °C | 150 °C | 200 °C | 250 °C | 300 °C | 350 °C | 400 °C | 450 °C | 500 °C |
|---|---|---|---|---|---|---|---|---|---|---|
| ≤ 16 | 288 | 266 | 254 | 248 | 243 | 236 | 225 | 212 | 197 | 185 |
| 16 < t ≤ 40 | 279 | 257 | 246 | 240 | 235 | 228 | 218 | 205 | 191 | 179 |
| 40 < t ≤ 60 | 270 | 249 | 238 | 232 | 227 | 221 | 211 | 198 | 185 | 173 |
| 60 < t ≤ 100 | 260 | 240 | 230 | 224 | 220 | 213 | 204 | 191 | 178 | 167 |
| 100 < t ≤ 150 | 250 | 237 | 228 | 222 | 219 | 213 | 204 | 191 | 178 | 167 |
| 150 < t ≤ 250 | 240 | 227 | 219 | 213 | 210 | 208 | 204 | 191 | 178 | 167 |
Minimum 0.2 % proof strength Rp0,2 in MPa at the stated temperature, EN 10028-2 Table 4, for the Table 3 delivery condition of the corresponding thickness. Values are specified through 500 °C.
Delivery Condition, Tests and Heat Treatment
Unless otherwise agreed, 10CrMo9-10 is supplied in the usual Table 3 condition: +NT (t ≤ 60 mm); +NT or +QT (60 < t ≤ 100 mm); +QT (100 < t ≤ 250 mm). Delivery conditions deviating from Table 3 may be agreed (2017 option 5); testing is then carried out on test pieces in the usual delivery condition indicated in Table 3.
Informative Annex A of EN 10028-2 gives heat-treatment temperature guidance. Those annex temperatures are not reproduced here as a substitute for the mill procedure or the contractual edition.
Cr–Mo steels may become embrittled in service at about 400 °C to 500 °C. A step-cooling test in accordance with Annex E (clause 8.8) may be specified at enquiry and order. A hydrogen-induced-cracking test in accordance with Annex D (clause 8.7) may also be specified for sour-service enquiry. Neither test is assumed on every 10CrMo9-10 plate.
Inspection documents follow EN 10028-1 and EN 10204 as specified on the order. The ordering example in EN 10028-2 uses an inspection certificate 3.1; that example does not make 3.1 mandatory for every contract.
Available Dimensions of EN 10028-2 10CrMo9-10 Steel Plate
Gangsteel supplies EN 10028-2 10CrMo9-10 plate in thicknesses within the Table 3 bands for this grade, up to the tabulated maximum of 250 mm. Width, length, quantity and processing (cutting, beveling or forming to agreed drawings) 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 10028-2 10CrMo9-10 Steel Plate
EN 10028-2 10CrMo9-10 is used for boilers, heat exchangers, hydroprocessing and other elevated-temperature pressure equipment that specify a 2,25 % Cr–1 % Mo steel with Table 4 values through 500 °C. Step-cooling and HIC tests may be specified when the service warrants them. It is not automatically interchangeable with 12CrMo9-10 or with ASTM A387 Grade 22. The contractual edition and mill certificate govern.
Equivalent Grades of EN 10028-2 10CrMo9-10 Steel Plate
The comparisons below use only existing Gangsteel product pages, or a clearly labelled historical or industry name without an invented URL. They are not automatic substitutions. A similar tensile class or a shared alloy family is not equivalence. Chemistry, delivery condition, impact, elevated-temperature proof stress and the design-code acceptance of the substitute must all be checked, and the purchaser must approve any change.
| Designation | Standard | Relationship |
|---|---|---|
| ASTM A387 Grade 22 Class 1 / ASTM A387 Grade 22 Class 2 | ASTM A387 | The 2,25 % Cr–1 % Mo alloy family often compared with 10CrMo9-10. Class 1 and Class 2 are ASTM tensile classes, not EN delivery conditions. Not an automatic substitution. |
| EN 10028-2 12CrMo9-10 | EN 10028-2 | The same chromium–molybdenum class in EN 10028-2, with a tighter carbon and silicon specification, a different steel number (1.7375) and a single Table 3 band at a higher yield minimum. Not the same grade and not a substitute without a specification change. |
| EN 10028-2 13CrMo4-5, EN 10028-2 13CrMoV9-10 | EN 10028-2 | Lower-chromium or vanadium-bearing grades in the same part. Not substitutes. |
Related Products
Other EN 10028-2 product pages already on this site, the parent pressure-vessel category, and selected existing EN 10028-3 pages (different part — not drafted in this pass) are listed below. EN 10028-2 P265GH is an existing product page and is not part of this 14-page remediation set. EN 10028-3, EN 10028-5 and EN 10028-6 bodies are not revised here.
- EN 10028-2 12CrMo9-10
- EN 10028-2 13CrMo4-5
- EN 10028-2 13CrMoV9-10
- EN 10028-2 X12CrMo5
- EN 10028-2 12CrMoV12-10
- EN 10028-2 13CrMoSi5-5
- EN 10028-2 15NiCuMoNb5-6-4
- EN 10028-2 16Mo3
- EN 10028-2 18MnMo4-5
- EN 10028-2 P235GH
- EN 10028-2 P295GH
- EN 10028-2 P355GH
- EN 10028-2 X10CrMoVNb9-1
- Pressure-vessel and boiler steel plate
FAQ about EN 10028-2 10CrMo9-10 Steel Plate
What is EN 10028-2 10CrMo9-10 steel plate?
EN 10028-2 10CrMo9-10 (steel number 1.7380) is a flat product for pressure equipment under EN 10028-2, with specified elevated-temperature properties. It is classified as a alloy special steel. Common written forms include EN10028-2 10CrMo9-10, 10CrMo9-10, 10 CrMo 9-10, 10CrMo910, 1.7380. These forms refer to the same grade. The usual delivery condition is +NT (t ≤ 60 mm); +NT or +QT (60 < t ≤ 100 mm); +QT (100 < t ≤ 250 mm). EN 10028-1 general requirements also apply. The contractual edition named on the order governs.
What is the chemical composition of EN 10028-2 10CrMo9-10?
The cast (heat) analysis limits for EN 10028-2 10CrMo9-10 are those of EN 10028-2:2017 Table 1, shown in the chemical-composition table on this page (steel number 1.7380). Product analysis shall not deviate from those limits by more than EN 10028-2:2017 Table 2. Those EN 10028-2:2017 figures are the requirements for this grade; values from ASTM, ASME or DIN documents are not EN 10028-2 chemistry.
What are the mechanical properties of EN 10028-2 10CrMo9-10 at room temperature?
Table 3 gives thickness-dependent minimum yield strength ReH, tensile strength Rm and elongation A for EN 10028-2 10CrMo9-10, in the transverse direction, in the usual delivery condition, through the tabulated maximum of 250 mm. Impact minima at −20 °C, 0 °C and +20 °C are part of the same table; some cells are values that may be agreed, and a 40 J minimum may be agreed where footnote g applies. The figures on this page are the sourced Table 3 values for those bands. EN 10028-2:2017 does not provide an option in this batch’s reading of the 2017 change list to agree properties above the tabulated maxima.
What is the elevated-temperature proof stress of EN 10028-2 10CrMo9-10?
EN 10028-2 Table 4 gives minimum 0,2 % proof strength Rp0,2 for EN 10028-2 10CrMo9-10 by thickness and temperature (50 °C to 500 °C where a value is tabulated). A dash in the table means no value is specified at that temperature. These are material proof-stress minima, not allowable design stresses from a pressure-equipment design code. For some alloy grades, Table 4 footnote in the 2009 official text records that values were not determined in accordance with EN 10314. Use the contractual edition.
What delivery condition is specified for EN 10028-2 10CrMo9-10 (+N, +NT or +QT)?
The usual delivery condition for EN 10028-2 10CrMo9-10 is +NT (t ≤ 60 mm); +NT or +QT (60 < t ≤ 100 mm); +QT (100 < t ≤ 250 mm), as EN 10028-2 Table 3. Where the usual condition is +NT, +QT may be agreed. Deviating delivery conditions may be agreed, with testing in the usual Table 3 condition.
What is the steel number of EN 10028-2 10CrMo9-10?
The steel number is 1.7380. The EN 10028-2 ordering example allows the product to be designated by steel name or by steel number. 1.7380 is the numerical designation of 10CrMo9-10, not a different grade.
Is EN 10028-2 10CrMo9-10 equivalent to ASTM or ASME plate, or to EN 10028-3?
No automatic equivalent is claimed. The Equivalent Grades table on this page lists only existing Gangsteel product pages (and clearly labelled historical or industry names) as qualified comparisons. A similar tensile class or a shared alloy family is not equivalence. EN 10028-3 grades such as P355NH, where linked, belong to a different part with different toughness and delivery rules. Do not use ASTM, ASME or DIN numbers as EN 10028-2 requirements.
What thicknesses of EN 10028-2 10CrMo9-10 are available?
Gangsteel supplies EN 10028-2 10CrMo9-10 plate within the Table 3 thickness bands for this grade, up to 250 mm. Width, length, quantity and processing are confirmed against each enquiry. This page does not publish a standing stock list and does not invent sizes. EN 10028-2:2017 deleted the option to agree properties for thicknesses above the tabulated maxima.
Are impact, HIC or step-cooling tests required for EN 10028-2 10CrMo9-10?
Table 3 impact minima (and agreed-value footnotes) apply as shown. Mid-thickness impact pieces may be agreed (2017 option 14). A hydrogen-induced-cracking test (Annex D) and a step-cooling embrittlement test for Cr–Mo steels (Annex E, clause 8.8) may be specified at enquiry and order. They are not assumed on every plate.
What should an enquiry for EN 10028-2 10CrMo9-10 include?
Provide the contractual standard edition (EN 10028-2:2017 unless a different edition is agreed), the complete grade (EN 10028-2 10CrMo9-10 or steel number 1.7380), thickness × width × length, quantity, delivery condition (+NT (t ≤ 60 mm); +NT or +QT (60 < t ≤ 100 mm); +QT (100 < t ≤ 250 mm), or a agreed deviation), impact and any elevated-temperature test requirements, inspection document to EN 10204 as specified, and any processing drawings. Availability, price and delivery are confirmed against that enquiry. No standing stock list is claimed on this page.
For production, processing and export enquiries for EN 10028-2 10CrMo9-10 steel plate, please contact Gangsteel. Visit Gangsteel for the full plate-supply range.