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1 ScopeThis part of this European Standard specifies the technical delivery conditions for forgings for pressurepurposes, made of ferritic and martensitic steels with specified elevated temperature properties.Chemical composition and mechanical properties are specified.NOTE Once this standard is published in the EU Official Journal (OJEU) under Directive 2014/68/EU,presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 2014/68/EU is limited totechnical data of materials in this standard and does not presume adequacy of the material to a specific item ofequipment. Consequently, the assessment of the technical data stated in this material standard against the designrequirements of this specific item of equipment to verify that the ESRs of Directive 2014/68/EU are satisfied,needs to be done. The series EN 10222–1 to EN 10222–5 is structured so that the data related to differentmaterials is in the part allocated for that material. The presumption of conformity to the Essential SafetyRequirements of Directive 2014/68/EU depends on both the text in part 1 and the data in part 2, 3, 4 or 5.General information on technical delivery condition is given in EN 10021.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and areindispensable for its application. For dated references, only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including any amendments) applies.EN 10222-1:2017, Steel forgings for pressure purposes — Part 1: General requirements3 Terms and definitionsFor the purpose of this document, the terms and definitions given in EN 10222-1:2017 apply.4 Classification and designation4.1 ClassificationIn accordance with EN 10020, the grades P235GH, P245GH, P250GH, P265GH, P280GH, P295GH andP305GH are non-alloy quality steels. All others are alloy special steels.4.2 DesignationSee EN 10222-1:2017.5 Information to be supplied by the purchaser5.1 Mandatory informations

5.2 OptionsA number of options are specified in this European Standard and listed below. Additionally the relevantoptions of EN 10222-1:2017 apply. If the purchaser does not give any information to implement any ofthese options at the time of enquiry and order, the products shall be supplied in accordance with thebasic specification (see also EN 10222-1:2017).1) test temperature for the tensile test at elevated temperature, if applicable (see 6.4);2) normalized forming instead normalizing (see Table 1, footnote c);3) carbon equivalent for non-alloy steels (see Table 2);4) increased minimum chromium content (see Table 2, footnote b);5) minimum impact energy values (see Table 4, footnote d);6) test to evaluate the resistance to hydrogen induced cracking (see 6.7);7) different test temperature for the impact energy and appropriate values (see Table 4, footnote e);8) higher sulphur content for alloy steels (see Table 2, footnote e).

6 Requirements6.1 Steelmaking process and manufacture of the productShall be in accordance with EN 10222-1:2017.6.2 Delivery conditionThe products shall be delivered in the heat treatment condition specified of Table 1.6.3 Chemical composition and chemical composition properties6.3.1 Cast analysisThe chemical composition (cast analysis), determined in accordance with EN 10222-1:2017 shallconform the requirements of Table 2.6.3.2 Product analysisThe product analysis shall not be deviate from the specified cast analysis (see 6.3.1) by more than thevalues specified in Table 3.6.4 Mechanical propertiesWhen heat treated in accordance with Table 1, the mechanical properties at room temperaturedetermined in accordance with EN 10222-1:2017, shall conform to the requirements of Table 4.Elevated temperature proof strength (Rp0,2) properties shall conform to the requirements of Table 5.If verification of specified proof strength at elevated temperature is requested (see option inEN 10222-1:2017), the testing temperature should be agreed at the time of enquiry and order.Otherwise, the test shall be carried out at 300 °C.