Creep resisting steels, nickel and cobalt alloys

1.1   This European Standard covers the grades of wrought steels and alloys listed in Tables 1 and 2 which are usually employed for components and equipment, for which the main requirement is their creep resistance under mechanical long-time stressing at temperatures above 500 °C.
Also heat resisting grades given in EN 10095 may be used for similar applications if so agreed.
1.2   This European Standard specifies the technical delivery conditions for semi-finished products, for hot or cold rolled sheet/plate and strip, hot or cold formed (cold drawn) bars, rods, wire and sections.
1.3   The general technical delivery conditions specified in EN 10021 apply in addition to the specifications of this European Standard, unless otherwise specified in this European Standard.
1.4   This European Standard does not apply to components manufactured by further processing the product forms listed in 1.2 with quality characteristics altered as a result of such further processing.
1.5   This European Standard is not intended for aerospace and pressure purposes.
1.6   For steels and alloys with similar chemical composition, but intended for different applications, see the Bibliography.

Warmfeste Stähle, Nickel- und Cobaltlegierungen

1.1 Diese Europäische Norm gilt für die in den Tabellen 1 und 2 aufgeführten Sorten von Stählen und
Legierungen, die üblicherweise für Erzeugnisse verwendet werden, bei denen die Langzeitwarmfestigkeit
unter mechanischer Beanspruchung bei Temperaturen oberhalb 500 °C die Hauptanforderung darstellt.
ANMERKUNG Falls vereinbart, dürfen auch hitzebeständige Stähle nach EN 10095 [9] für ähnliche Anwendungen
verwendet werden.
1.2 Diese Europäische Norm legt die technischen Lieferbedingungen für Halbzeug, warm- oder kaltgewalztes
Blech und Band, warm- oder kaltgeformte (kaltgezogene) Stäbe, Walzdraht, gezogenen Draht und
Profile fest.
1.3 Zusätzlich zu den Angaben dieser Europäischen Norm gelten, sofern in dieser Norm nichts anderes
festgelegt ist, die in EN 10021 wiedergegebenen allgemeinen technischen Lieferbedingungen.
1.4 Diese Europäische Norm gilt nicht für die durch Weiterverarbeitung der in 1.2 genannten Erzeugnisformen
hergestellten Teile mit fertigungsbedingten abweichenden Gütemerkmalen.
1.5 Diese Europäische Norm darf nicht für Luft- und Raumfahrt- sowie Druckbehälteranwendungen benutzt
werden.
1.6 Für Stähle und Legierungen mit ähnlicher chemischer Zusammensetzung, jedoch anderem Verwendungszweck,
siehe Abschnitt Literaturhinweise.

Aciers et alliage a base de nickel et de cobalt résistant au fluage

1.1   La présente Norme européenne traite des nuances d'aciers et d'alliage corroyés énumérés dans les Tableaux 1 et 2 qui sont généralement employés pour la fabrication de pieces et de matériels, dont l'exigence principale porte sur la résistance au fluage lorsqu'elles subissent une contrainte de longue durée a des températures supérieures a 500 °C.
Les nuances d'aciers réfractaires données par l'EN 10095 peuvent, si cela fait l'objet d'un accord, etre utilisées pour des applications similaires.
1.2   La présente Norme européenne spécifie les conditions techniques de livraison des demi-produits, des tôles/bandes et feuillards laminés a chaud ou a froid, des barres, du fil machine, des fils et des profils transformés a chaud ou a froid (étirés a froid).
1.3   Sauf spécification contraire dans le présent document, les conditions techniques générales de livraison spécifiées dans l'EN 10021 s'appliquent en plus des spécifications de la présente Norme européenne.
1.4   La présente Norme européenne ne s'applique pas aux éléments fabriqués par transformation ultérieure de produits énumérés en 1.2, qui aurait pour effet de modifier les caractéristiques de qualité de ces produits.
1.5   La présente norme européenne n'est pas destinée a etre utilisée dans le cadre d'applications aérospatiales ou sous pression.
1.6   Pour les aciers et alliages ayant une composition chimique analogue mais destinés a d'autres applications, voir la bibliographie.

Jekla ter nikljeve in kobaltove zlitine, odporne proti lezenju

General Information

Status
Published
Publication Date
03-Apr-2008
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
25-Mar-2008
Due Date
30-May-2008
Completion Date
04-Apr-2008

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Jekla ter nikljeve in kobaltove zlitine, odporne proti lezenjuWarmfeste Stähle, Nickel- und CobaltlegierungenAciers et alliage a base de nickel et de cobalt résistant au fluageCreep resisting steels, nickel and cobalt alloys77.120.70Kadmij, kobalt in njune zlitineCadmium, cobalt and their alloys77.120.40Nikelj, krom in njune zlitineNickel, chromium and their alloys77.080.20JeklaSteelsICS:Ta slovenski standard je istoveten z:EN 10302:2008SIST EN 10302:2008en,de01-maj-2008SIST EN 10302:2008SLOVENSKI

STANDARDSIST EN 10302:2003/AC:2005SIST EN 10302:20031DGRPHãþD
SIST EN 10302:2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10302March 2008ICS 77.120.01; 77.140.01; 77.150.01Supersedes EN 10302:2002

English VersionCreep resisting steels, nickel and cobalt alloysAciers et alliage à base de nickel et de cobalt résistant aufluageWarmfeste Stähle, Nickel- und CobaltlegierungenThis European Standard was approved by CEN on 10 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10302:2008: ESIST EN 10302:2008

EN 10302:2008 (E) 2 Contents Page Foreword..............................................................................................................................................................3 1 Scope......................................................................................................................................................4 2 Normative references............................................................................................................................4 3 Terms and definitions...........................................................................................................................5 4 Classification and designation.............................................................................................................5 4.1 Classification..........................................................................................................................................5 4.2 Designation............................................................................................................................................5 5 Information to be supplied by the purchaser.....................................................................................6 5.1 Mandatory information ≤.......................................................................................................................6 5.2 Options ≤≤..............................................................................................................................................6 6 Manufacturing process.........................................................................................................................7 6.1 General ≤≤..............................................................................................................................................7 6.2 Delivery condition ≤...............................................................................................................................7 7 Requirements.........................................................................................................................................7 7.1 Chemical composition..........................................................................................................................7 7.2 Mechanical properties...........................................................................................................................7 7.2.1 Mechanical properties at room temperature.......................................................................................7 7.2.2 Mechanical properties at elevated temperatures...............................................................................7 7.3 Creep properties....................................................................................................................................7 7.4 Surface condition...................................................................................................................................7 7.5 Internal soundness................................................................................................................................8 7.6 Dimensions and tolerances on dimensions ≤....................................................................................8 7.7 Calculation of mass and tolerances on mass.....................................................................................8 8 Inspection and testing...........................................................................................................................8 8.1 General....................................................................................................................................................8 8.2 Types and contents of inspection documents ≤≤..............................................................................8 8.3 Specific inspection and testing............................................................................................................9 8.3.1 Extent of testing.....................................................................................................................................9 8.3.2 Selection and preparation of samples and test pieces......................................................................9 8.4 Test methods..........................................................................................................................................9 8.5 Retests..................................................................................................................................................10 9 Marking.................................................................................................................................................10 Annex A (informative)

Applicable dimensional standards..........................................................................25 Annex B (informative)

Technical information on creep resisting steels, nickel and cobalt alloys.........26 Annex C (informative)

Preliminary reference data for creep strength to 1 % plastic strain and creep rupture strength........................................................................................................................29 Annex D (informative)

Guideline values for the physical properties of creep resisting steels, nickel and cobalt alloys......................................................................................................................42 Bibliography......................................................................................................................................................46

SIST EN 10302:2008

EN 10302:2008 (E) 3 Foreword This document (EN 10302:2008) has been prepared by Technical Committee ECISS/TC 23 “Stainless steels”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10302:2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. NOTE The clauses marked with a point (≤) contain information relating to agreements which are to be made at the time of ordering. The clauses marked with two points (≤≤) contain information relating to agreements which may be made at the time of ordering. SIST EN 10302:2008

EN 10302:2008 (E) 4 1 Scope 1.1 This European Standard covers the grades of wrought steels and alloys listed in Table 1 and Table 2, which are usually employed for components and equipment, for which the main requirement is their creep resistance under mechanical long-time stressing at temperatures above 500 °C. NOTE Heat resisting grades given in EN 10095 [9] may also be used for similar applications if so agreed. 1.2 This European Standard specifies the technical delivery conditions for semi-finished products, for hot or cold rolled sheet/plate and strip, hot or cold formed (cold drawn) bars, rods, wire and sections.

1.3 The general technical delivery conditions specified in EN 10021 apply in addition to the specifications of this European Standard, unless otherwise specified in this European Standard. 1.4 This European Standard does not apply to components manufactured by further processing the product forms listed in 1.2 with quality characteristics altered as a result of such further processing. 1.5 This European Standard shall not be used for aerospace and pressure purposes. 1.6 For steels and alloys with similar chemical composition, but intended for different applications, see the Bibliography. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test (at ambient temperature) EN 10002-5, Metallic materials - Tensile testing - Part 5: Method of testing at elevated temperature EN 10020:2000, Definition and classification of grades of steel EN 10021:2006, General technical delivery conditions for steels products EN 10027-1, Designation systems for steels - Part 1: Steel names EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10079:2007, Definition of steel products EN 10163-2, Delivery requirements for surface condition of hot rolled steel plates, wide flats and sections - Part 2: Plate and wide flats EN 10168:2004, Steel products – Inspection documents – List of information and description EN 10204, Metallic products - Types of inspection documents EN 10221, Surface quality classes for hot-rolled bars and rods - Technical delivery conditions prCEN/TR 10261, Iron and steel - Review of

available methods of chemical analysis EN ISO 377:1997, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) SIST EN 10302:2008

EN 10302:2008 (E) 5 EN ISO 14284:2002, Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10020:2000, EN 10021:2006, EN 10052:1993, EN 10079:2007, EN ISO 377:1997 and EN ISO 14284:2002 and the following apply. 3.1 creep resisting materials

steels, nickel- or cobalt-alloys with a minimum of 8 % chromium, which are characterised by good mechanical behaviour at temperatures above 500 °C under long-range service conditions; i.e. primarily by creep strength to 1 % plastic strain or creep rupture strength during long-time stressing NOTE For supplementary information on creep resisting steels and alloys see Annex B. 4 Classification and designation 4.1 Classification Materials covered in this European Standard are classified according to their structure into:  martensitic steels;  austenitic steels;  nickel alloys; and  cobalt alloys. 4.2 Designation The names and numbers of the steels (see Table 1) were formed in accordance with EN 10027-1 and

EN 10027-2 respectively. NOTE Explanation on the designation of nickel and cobalt alloys (see Table 2).  name: The preceding chemical symbols indicate the main alloy elements and the figure immediately following indicates the average content of these alloys which is subsequently followed by the symbol for the other important alloying elements added.  material number: The structure is set out according to EN 10027-2 with the number 2 for the material group number. This material group comprises chemically resistant and high temperature or heat resistant nickel and cobalt alloys. SIST EN 10302:2008

EN 10302:2008 (E) 6

5 Information to be supplied by the purchaser 5.1 Mandatory information ≤ The following information shall be supplied by the purchaser at the time of enquiry and order: a) quantity to be delivered; b) designation of the product form (e.g. bar or rod, strip or plate); c) where an appropriate dimensional standard is available (see Annex A) the number of the standard and the indications required by this, also the nominal dimensions and tolerances; d) type of material (steel, cobalt or nickel alloy); e) number of this European Standard (EN 10302:2008); f) name or number of the steel grade, nickel or cobalt alloy (see 4.2); g) if for the relevant material in the table more than one treatment condition for the mechanical properties is covered, the symbol for the desired heat treatment condition or work hardened condition; h) desired process route (see symbols in Table 5 and Table 6). 5.2 Options ≤≤ A number of options are specified in this European Standard and listed below. If the purchaser does not indicate his wish to implement any of these options, the supplier shall supply in accordance with the basic specification of this European Standard (see 5.1). a) any requirement concerning a special melting or forming process (see 6.1); b) any requirement relating to surface condition (see 7.4); c) any requirement concerning tolerances on mass not specified in the dimensional standard (see 7.7.2); d) any requirement to determine the product analysis (see Table 11, footnote b); e) any requirement concerning the method of product analysis (see 8.4.1); f) any requirement concerning elevated temperature tensile testing (see 8.4.3); g) any requirement concerning special marking of the products (see 9.2, 9.3 and Table 12); h) any requirement concerning the issue of an inspection document (see 8.2). EXAMPLE 10 t rounds of a steel grade with the name X6NiCrTiMoVB25-15-2 and the number 1.4980 as specified in EN 10302 of 50 mm diameter, dimensional tolerances as specified in EN 10060, in process route 1D (see Table 6). 10 t rounds EN 10060–50 steel EN 10302 - X6NiCrTiMoVB25-15-2+1D or 10 t rounds EN 10060–50 steel EN 10302-1.4980+1D SIST EN 10302:2008

EN 10302:2008 (E) 7 6 Manufacturing process 6.1 General ≤≤ Unless a special melting or forming process is agreed when ordering, the production process for steels and alloys conforming to this European Standard shall be at the discretion of the manufacturer. 6.2 Delivery condition ≤ The products shall be supplied in the delivery condition agreed in the order by reference to the process route given in Table 5 and Table 6 and to the treatment conditions given in Table B.1 and Table B.2. 7 Requirements 7.1 Chemical composition 7.1.1 The chemical composition requirements given in Table 1 and Table 2 apply in respect to the cast analysis. 7.1.2 The product analysis may deviate from the limiting values for the cast analysis given in Table 1 and Table 2 by the values listed in Table 3 and Table 4. 7.2 Mechanical properties 7.2.1 Mechanical properties at room temperature The mechanical properties at room temperature as specified in Table 7 and Table 8 apply for each specified heat treatment condition. This does not apply to the process route 1U (hot rolled, not heat treated, not descaled) and to semi-finished products. ≤ If by agreement at the time of ordering the products are to be supplied in a non-heat-treated condition, the mechanical properties specified in Table 7 and Table 8 shall be obtainable from reference test pieces which have received the appropriate heat treatment (simulated heat treatment). 7.2.2 Mechanical properties at elevated temperatures The mechanical properties at elevated temperature as specified in Table 9 and Table 10 apply for each specified heat treatment condition. This does not apply to the process route 1U (hot rolled, not heat treated, not descaled) and to semi-finished products. ≤ If by agreement at the time of ordering the products are to be supplied in a non-heat-treated condition, the mechanical properties specified in Table 9 and Table 10 shall be obtainable from reference test pieces which have received the appropriate heat treatment (simulated heat treatment). 7.3 Creep properties The creep strength to 1 % plastic strain or creep rupture strength values as specified in Annex C apply for each specified heat treatment condition. This does not apply to the process route 1U (hot rolled, not heat treated, not descaled) and to semi-finished products. 7.4 Surface condition Slight surface imperfections, inherent in the production process, are permitted. ≤≤ If more exact requirements for the surface quality are necessary, this shall be agreed at the time of enquiry and order. SIST EN 10302:2008

EN 10302:2008 (E) 8 When products are delivered in coil form, the degree and extent of such imperfections may be expected to be greater, due to the impractibility of removing short lengths of coil. For hot-rolled quarto-plates, the specification in EN 10163-2, class A3, applies unless otherwise agreed. For long products, where appropriate, the requirements shall be on the basis of EN 10221. 7.5 Internal soundness The products shall be sound and free from defects that preclude their intended use. ≤≤ Where appropriate, requirements together with the conditions for their verification may be agreed at the time of enquiry and order. 7.6 Dimensions and tolerances on dimensions ≤ The dimensions and the tolerances on dimensions are to be agreed at the time of enquiry and order, as far as possible with reference to the dimensional standards listed in Annex A. 7.7 Calculation of mass and tolerances on mass 7.7.1 When calculating the nominal mass from the nominal dimensions, the values given in Tables D.1 and D.2 shall be used as a basis for the density of the grade concerned. 7.7.2 ≤≤ If the tolerances on mass are not specified in the dimensional standard listed in Annex A, they may be agreed at the time of enquiry and order. 8 Inspection and testing 8.1 General The manufacturer shall carry out appropriate process control, inspection and testing to assure himself that the delivery complies with the requirements of the order. This includes the following:  suitable frequency of verification of the dimensions of the products,  adequate intensity of visual examination of the surface quality of the products,  appropriate frequency and type of test to ensure that the correct grade is used. The nature and frequency of these verifications, examinations and tests is determined by the manufacturer, in the light of the degree of consistency that has been determined by the evidence of the quality system. In view of this, verifications by specific tests for these requirements are not necessary unless otherwise agreed. 8.2 Types and contents of inspection documents ≤≤ 8.2.1 At the time of ordering, the issue of one of the inspection documents in accordance with EN 10204 may be agreed for each delivery. 8.2.2 If it is agreed to issue a test report 2.2 in accordance with EN 10204 it shall indicate the following information: a) information groups A, B and Z of EN 10168:2004; b) results of the cast analysis in accordance with the code numbers C71 to C92 in EN 10168:2004. SIST EN 10302:2008

EN 10302:2008 (E) 9 8.2.3 If the issuing of an inspection certificate 3.1 or 3.2 according to EN 10204 has been agreed, specific inspections according to 8.3 are to be carried out and the following information shall be given in the inspection document with the code numbers and details required by EN 10168:2004: a) as under 8.2.2 a); b) as under 8.2.2 b); c) results of the mandatory tests marked in Table 11, second column, by an 'm'; d) result of the optional tensile test at elevated temperature marked in Table 11, second column, by an “o” and of any other optional test or inspection agreed when ordering. 8.3 Specific inspection and testing 8.3.1 Extent of testing The tests to be carried out, either as mandatory (m) or by agreement (o) and the composition and size of the test units, and the number of sample products, samples and test pieces to be taken are given in Table 11. 8.3.2 Selection and preparation of samples and test pieces 8.3.2.1 The specifications of EN ISO 377 and EN ISO 14284 respectively shall be observed in sampling and sample preparation. The stipulations in 8.3.2.2 apply additionally for the mechanical tests. 8.3.2.2 The test samples for the tensile test shall be taken in accordance with Figure 1 and Figure 2 in such a way that for flat products, they are located half-way between the centre and a longitudinal edge. The samples shall be taken from products in the delivery condition. If agreed, the samples may be taken before flattening for flat products or before straightening for bars. For samples to be given a simulated heat treatment the conditions for annealing, hardening and tempering shall be agreed. 8.4 Test methods 8.4.1 ≤≤ The chemical analysis shall be carried out using the appropriate European Standard for the element being analysed. In the absence of an appropriate European Standard, the choice of a suitable physical or chemical analytical method for the analysis shall be at the discretion of the manufacturer. The manufacturer shall declare the test method used, if required. The list of available European Standards on chemical analysis is given in prCEN/TR 10261. 8.4.2 The tensile test at room temperature shall be carried out in accordance with EN 10002-1. Generally, this means using proportional test pieces having a gauge length L0 = 5,65 0S. (S0 = cross-section of the test piece). In cases of doubt and in referee testing, this type of test piece shall be used. The 0,2 % proof strength, the tensile strength and elongation after fracture shall be determined. 8.4.3 If agreed when ordering, the tensile test at elevated temperature shall be carried out in accordance with EN 10002-5, this generally being with proportional test pieces having a gauge length L0 = 5,65 0S. (S0 = cross-section of the test piece). In cases of doubt and in referee testing these test pieces shall be used. The temperature of testing is to be agreed. The 0,2 % proof strength shall be determined. 8.4.4 Dimensions and dimensional tolerances of the products shall be tested in accordance with the requirements of the relevant dimensional standards, where available. SIST EN 10302:2008

EN 10302:2008 (E) 10 8.5 Retests See EN 10021:2006. 9 Marking 9.1 Marking shall be durable. 9.2 ≤≤ Unless otherwise agreed, the requirements listed in Table 12 apply. 9.3 ≤≤ The method and the extent of marking and the material of marking shall, unless otherwise agreed, be at the option of the manufacturer. 9.4 As an alternative for items that are wrapped, bundled or boxed, the marking may be applied to the packaging, or to a tag securely attached to it.

Dimensions in millimetres Type of test Round cross-section products Rectangular cross-section products Tensile

a Samples of product may alternatively be tested unmachined, in accordance with EN ISO 377.

Figure 1 — Position of test pieces for steel bars and rods ≤ 160 mm diameter or thickness (longitudinal test pieces) SIST EN 10302:2008

EN 10302:2008 (E) 11 Product thickness t Direction of the longitudinal axis of the test piece in relation to the principal direction of rolling at a rolled width of Distance of test piece from the rolled surface Type of test piece mm < 300 mm ≥ 300 mm Dimensions in millimetres

≤ 30
Tensile a
> 30
longitudinal
transverse

a In cases of doubt or dispute the gauge length shall be Lo = 5,65 0S for test pieces from products t ≥ 3 mm. For products with a thickness t < 3 mm, non-proportional test pieces with a gauge length of 80 mm and a width of 20 mm shall be used, but test pieces with a gauge length of 50 mm and a width of 12,5 mm may also be applied. For products with a thickness 3 mm ≤ t ≤ 10 mm (or t ≤ 8 mm in case of alloys) flat proportional test pieces with two rolled surfaces and a maximum width of 30 mm shall be used. For products with a thickness t > 10 mm (or t > 8 mm in case of alloys), one of the following proportional test pieces may be used: - either a flat test piece with a maximum thickness of 30 mm; the thickness may be reduced to 10 mm by machining, but one rolled surface shall be preserved. - or a round test piece with a diameter of d ≥ 5 mm the axis of which shall be located as near as possible to a plane in the outer third of half the product thickness. Key 1 Rolling surface 2 Alternatives Figure 2 — Position of the tensile test pieces in flat products

SIST EN 10302:2008

EN 10302:2008 (E) 12 Table 1 — Chemical composition (cast analysis) a of creep resisting steels Steel grade % by mass Name Num- ber C Si Mn P max. S max. N Al Cr Mo Nb Ni Ti V W Others Martensitic steels X10CrMoVNb9-1 1.4903 0,08 to 0,12 ≤ 0,50 0,30 to 0,60 0,025 0,015 0,030 to 0,070 ≤ 0,030 8,0 to 9,5 0,85 to 1,05 0,060 to 0,10 ≤ 0,40 - 0,18 to 0,25 - - X11CrMoWVNb9-1-1 1.4905 0,09 to 0,13 0,10 to 0,50 0,30 to 0,60 0,020 0,010 0,050 to 0,090 ≤ 0,040 8,5 to 9,5 0,90 to 1,10 0,060 to 0,10 0,10 to 0,40 - 0,18 to 0,25 0,90 to 1,10 B: 0,0005 to 0,0050 X8CrCoNiMo10-6 1.4911 0,05 to 0,12 0,10 to 0,80 0,30 to 1,30 0,025 0,015 ≤ 0,035 - 9,8 to 11,2 0,50 to 1,00 0,20 to 0,50 0,20 to 1,20 - 0,10 to 0,40 ≤ 0,70 B: 0,005 to 0,015 Co: 5,0 to 7,0 X19CrMoNbVN11-1 1.4913 0,17 to 0,23 ≤ 0,50 0,40 to 0,90 0,025 0,015 0,050 to 0,10 ≤ 0,020 10,0 to 11,5 0,50 to 0,80 0,25 to 0,55 0,20 to 0,60 - 0,10 to 0,30 - B: ≤ 0,0015 X20CrMoV11-1 1.4922 0,17 to 0,23 ≤ 0,50 ≤ 1,00 0,025 0,015 - - 10,0 to 12,5 0,80 to 1,20 - 0,30 to 0,80 - 0,25 to 0,35 - - X22CrMoV12-1 1.4923 0,18 to 0,24 ≤ 0,50 0,40 to 0,90 0,025 0,015 - - 11,0 to 12,5 0,80 to 1,20 - 0,30 to 0,80 - 0,25 to 0,35 - - X20CrMoWV12-1 1.4935 0,17 to 0,24 0,10 to 0,50 0,30 to 0,80 0,025 0,015 - - 11,0 to 12,5 0,80 to 1,20 - 0,30 to 0,80 - 0,20 to 0,35 0,40 to 0,60 - X12CrNiMoV12-3 1.4938 0,08 to 0,15 ≤ 0,50 0,40 to 0,90 0,025 0,015 0,020 to 0,040 - 11,0 to 12,5 1,50 to 2,00 - 2,00 to 3,00 - 0,25 to 0,40 - - Austenitic steels X3CrNiMoBN17-13-3 1.4910 ≤ 0,04 ≤ 0,75 ≤ 2,00 0,035 0,015 0,10 to 0,18 - 16,0 to 18,0 2,00 to 3,00 - 12,0 to 14,0 - - - B: 0,0015 to 0,0050 X6CrNiMoB17-12-2 1.4919 0,04 to 0,08 ≤ 1,00 ≤ 2,00 0,035 0,015 ≤ 0,10 - 16,5 to 18,5 2,00 to 2,50 - 10,0 to 13,0 - - - B:0,0015 to 0,0050 X6CrNiTiB18-10 1.4941 0,04 to 0,08 ≤ 1,00 ≤ 2,00 0,035 0,015 - - 17,0 to 19,0 - - 9,0 to 12,0 5xC to 0,80 - - B: 0,0015 to 0,0050 X6CrNiWNbN16-16 1.4945 0,04 to 0,10 0,30 to 0,60 ≤ 1,50 0,035 0,015 0,060 to 0,14 - 15,5 to 17,5 - 10xC to 1,20 15,5 to 17,5 - - 2,50 to 3,5 - X6CrNi25-20 1.4951 0,04 to 0,08 ≤ 0,70 ≤ 2,00 0,035 0,015 ≤ 0,10 - 24,0 to 26,0 - - 19,0 to 22,0 - - - - X5NiCrAlTi31-20 1.4958 0,030 to 0,08 ≤ 0,70 ≤ 1,50 0,015 0,010 - 0,20 to 0,50 19,0 to 22,0 - ≤ 0,10 30,0 to 32,5 0,20 to 0,50 - - Cu: ≤ 0,50

SIST EN 10302:2008

EN 10302:2008 (E) 13 Table 1 (continued) Steel grade % by mass Name Num- ber C Si Mn P max. S max. N Al Cr Mo Nb Ni Ti V W Others Austenitic steels (continued) X8NiCrAlTi32-21 1.4959 0,05 to 0,10 ≤ 0,70 ≤ 1,50 0,015 0,010 - 0,25 to 0,65 19,0 to 22,0 - - 30,0 to 34,0 0,25 to 0,65 - - Cu: ≤ 0,50 X8CrNiNb16-13 1.4961 0,04 to 0,10 0,30 to 0,60 ≤ 1,50 0,035 0,015 - - 15,0 to 17,0 - 10xC to 1,20 12,0 to 14,0 - - - - X12CrNiWTiB16-13 1.4962 0,07 to 0,15 ≤ 0,50 ≤ 1,50 0,035 0,015 - - 15,5 to 17,5 - - 12,5 to 14,5 0,40 to 0,70 - 2,50 to 3,00 B: 0,0015 to 0,0060 X12CrCoNi21-20 1.4971 0,08 to 0,16 ≤ 1,00 ≤ 2,00 0,035 0,015 0,10 to 0,20 - 20,0 to 22,5 2,50 to 3,5 0,75 to 1,25 19,0 to 21,0 - - 2,00 to 3,00 Co: 18,5 to 21,0 X6NiCrTiMoVB25-15-2 1.4980 0,030 to 0,08 ≤ 1,00 1,00 to 2,00 0,025 0,015 - ≤ 0,35 13,5 to 16,0 1,00 to 1,50 - 24,0 to 27,0 1,90 to 2,30 0,10 to 0,50 - B: 0,0030 to 0,010 X8CrNiMoNb16-16 1.4981 0,04 to 0,10 0,30 to 0,60 ≤ 1,50 0,035 0,015 - - 15,5 to 17,5 1,60 to 2,00 10xC to 1,20 15,5 to 17,5 - - - - X6CrNiMoTiB17-13 1.4983 0,04 to 0,08 ≤ 0,75 ≤ 2,00 0,035 0,015 - - 16,0 to 18,0 2,00 to 2,50 - 12,0 to 14,0 5xC to 0,80 - - B: 0,0015 to 0,0060 X8Cr

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