1、DEUTSCHE NORM December 1999 Open die steel forgings for general engineering purposes Part 1 : General requirements English version of DIN EN 10250-1 DIN - EN 10250-1 ICs 77.1 40.85 Freiformschmiedestcke aus Stahl fr allgemeine Verwendung - Teil 1 : Allgemeine Anforderungen This standard, together De
2、cember 1999 edition, supersedes DIN 171 00, January 1980 edition (withdrawn in January 1991), and parts of DIN 17440, September 1996 edition. with DIN EN 10250-2, European Standard EN 10250-1 : 1999 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This stand
3、ard has been prepared by ECISS/TC 28. The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Steel and Iron Standards Committee), Technical Committee Schmiedestcke. DIN V 17006-1 O0 is the standard corresponding to CEN Technical Report CR 10260. Amendments D
4、IN EN 10250-2, December 1999 edition, DIN 171 00, January 1980 edition, and parts of DIN 17440, Sep- tember 1996 edition, have been superseded by the specifications of DIN EN 10250-1. Previous editions DIN 171 00: 1957-1 O, 1966-09, 1980-01 DIN 17440: 1967-01, 1972-1 2, 1985-07, 1996-09. National An
5、nex NA Standard referred to (and not included in Normative references) DIN V 17006-1 O0 Designation systems for steels - Additional symbols EN comprises 17 pages. No pari of this standard may be reproduced without the prior permission of V Deutsches Institut fur Normung e. V., Berlin. Beuth Verlag G
6、mbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN EN 10250-1 : 1999-1 English pricegroup 10 Sales No. 1110 06.00 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesCOPYRIGHT DIN DEUTSCHES Institut
7、 Fur Normung E.V.- EnglishLicensed by Information Handling ServicesEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10250-1 August 1999 ICs 77.140.85 English version Open die steel forgings for general engineering purposes Part 1 : General requirements Pices forges en acier pour usage gnral - Pa
8、rtie 1 : Exigences gnrales Allgemeine Anforderungen Freiformschmiedestcke aus Stahl fr allgemeine Verwendung - Teil 1 : This European Standard was approved by CEN on 1999-07-1 6. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this E
9、uropean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (Eng
10、lish, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech
11、 Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretari
12、at: rue de Stassart 36, B-1050 Brussels O 1999. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 10250-1 : 1999 E COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 2 EN 10250-1
13、 : 1999 Contents Page Foreword 1 Scope 2 Normative references 3 Definitions 4 Classification and designation 5 Information to be supplied by the purchaser 6 Manufacture of the steel 7 Manufacture of the product 8 Surface condition and internal soundness 9 Chemical composition 10 Mechanical propertie
14、s 11 Sampling and preparation of test pieces 12 Mechanical test methods 13 Retests and re-heat treatment 14 Inspection 15 Marking Annex A (normative) Options Annex B (informative) Ruling section and equivalent thickness 3 4 4 5 5 6 6 7 7 8 9 9 11 11 12 12 14 16 COPYRIGHT DIN DEUTSCHES Institut Fur N
15、ormung E.V.- EnglishLicensed by Information Handling ServicesPage 3 EN 10250-1 : 1999 Foreword This European Standard has been prepared by Technical Committee ECISSfC 28 “Steel forgings”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard
16、, either by publication of an identical text or by endorsement, at the latest by February 2000, and conflicting national standards shall be withdrawn at the latest by February 2000. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free
17、 Trade Association. This European Standard is considered to be a supporting standard to those application and product standards which in themselves support an essential safety requirement of a New Approach Directive and which make reference to this European Standard. The titles of the other Parts of
18、 this European Standard are: Part 2 : Non-alloy quality and special steels Part 3 : Alloy special steels Part 4 : Stainless steels According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
19、 Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Lreland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 4 EN 102
20、50-1 : 1999 1 Scope This Part of this European Standard specifies the general technical delivery conditions for open die forgings, forged bars, and products pre-forged and finished in ring rolling mills, for general engineering purposes. General information on technical delivery conditions is given
21、in EN 10021, 2 Normative references This Part of EN 10250 incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments
22、to, or revisions of, any of these publications apply to this European Standard, only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 287-1 EN 288-1 EN 288-2 EN 288-3 EN 10002- 1 EN 10003-1 EN 10020 EN 10021 EN 100
23、27- 1 EN 10027-2 EN 10045-1 EN 10052 EN 10079 EN 10204 Approval testing of welders. Fusion welding - Part 1: Steels Specification and qualification of welding procedures for metallic materials - Part 1 : General rules for fusion welding Specification and qualification of welding procedures for metal
24、lic materials - Part 2: Welding procedure specification for arc welding Specification and qualification of welding procedures for metallic materials - Part 3: Welding procedure tests for the arc welding of steels Metallic materials - Tensile testing - Part 1 : Method of test Metallic materials - Bri
25、nell hardness test - Part 1 : Test method Definition and classification of grades of steel General technical delivery requirements for steel and iron products Designation systems for steels - Part 1 : Steel names, principal symbols Designation systems for steels - Part 2 : Numerical system Metallic
26、materials - Charpy impact test - Part 1: Test method Vocabulary of heat treatment terms for ferrous products Definition of steel products. Metallic products - types of inspection documents COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 5 EN 10
27、250-1 : 1999 EN 10228-1 EN 10228-2 EN 10228-3 prEN 10228-4 EN IS0 377 CR 10260 EN IS0 365 1-2 CR 10261 prEN 10168 3 Definitions Non-destructive testing of steel forgings - Part 1 : Magnetic particle inspection Non-destructive testing of steel forgings - Part 2: Penetrant testing Non-destructive test
28、ing of steel forgings - Part 3: Ultrasonic testing of ferritic or martensitic steel forgings Non-destructive testing of steel forgings - Part 4: Ultrasonic testing of austenitic and austenitic-ferritic stainless steel forgings Steel and steel products - Location and preparation of samples and test p
29、ieces for mechanical testing (IS0 377:1997) Designation systems for steels - Additional symbols Determination of resistance to intergranular corrosion of stainless steels - Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing sulfuric ac
30、id (IS0 365 1-2: 1998) ECISS Information Circular 11 - Iron and steel - Review of available methods of chemical analysis Iron and steel documents - Inspection documents - Contents For the purposes of this Part of this European Standard the following definition applies in addition to the definitions
31、in EN 10020, EN 10021, EN 10052, EN 10079 and EN IS0 377. 3.1 batch: Forgings of similar dimensions from the same cast, made by the same forging procedure and from the same heat treatment charge. Similar dimensions are to be taken as forgings having dimensions within k 10 % of the equivalent thickne
32、ss. 4 Classification and designation 4.1 Classification The steels covered by this European Standard are classified as follows: - Part 2: Non-alloy quality and special steels; - Part 3: Alloy special steels; - Part 4: Stainless steels COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicense
33、d by Information Handling ServicesPage 6 EN 10250-1 : 1999 4.2 Designation The steels in Parts 2 to 4 of this European Standard shall be designated in accordance with the requirements of EN 10027-1 and -2 and CEN CR 10260. 5 Information to be supplied by the purchaser 5.1 Mandatory information The p
34、urchaser shall select the steel type, the shape and dimensions of the forgings taking the intended use into account. The purchaser shall provide in the order all the information necessary for describing the forging and its characteristics and details concerning delivery including the following: a) t
35、he quantity of forgings required; b) the forging dimensions, or the drawing number(s) containing the dimensions, tolerances and surface finish, with which the forging shall conform; c) the steel designation (name or number) of the material of which the forgings are made (see 4.2); d) whether the pur
36、chaser has any specific requirements on the hot working process or needs to be informed of the forging procedure (see A.2 and A.3); e) whether production and testing of the forgings is to be witnessed by the purchasers representative, and if so, the particular stages in production and testing at whi
37、ch the purchasers representative may require to be present (see clause 14); f) any required options (see 5.2 and annex A); g) if required, the type of inspection document in accordance with EN 10204. 5.2 Options A number of options are available and these are detailed in annex A. Where any of the op
38、tions given are specified at the time of the order, the forgings shall conform to the requirements of any such option, in addition to the mandatory requirements of this European Standard. If the purchaser does not specify any options at the time of enquiry and order, the manufacturer shall supply in
39、 accordance with the basic specification. 6 Manufacture of the steel 6.1 Steelmaking process The steel shall be produced by an electric process or one of the basic oxygen processes (see A.l). COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 7 EN
40、 10250-1 : 1999 6.2 Deoxidation The steel shall be fully killed. 7 Manufacture of the product 7.1 Hot working The choice of hot working process shail be at the discretion of the manufacturer (see A.2). 7.2 Forging reduction The forging shall receive a sufficient forging reduction to completely conso
41、lidate the forging and remove the cast structure (see A.3). 7.3 Heat treatment The forgings shall be delivered in a heat treated condition as specified in the relevant Part of prEN 10250, unless otherwise agreed at the time of enquiry and order. 7.4 Weldability The steel in this European Standard ar
42、e generally regarded as being weldable. Welding shall be carried out in accordance with EN 287 and EN 288. 8 Surface condition and internai soundness 8.1 General The forgings shail be sound and free from such segregation, cracks, laminations or defects that preclude their intended use (see A.4, A.5
43、and A.6). 8.2 Removal or surface defects 8.2.1 Conformi to 8.1 Before forgings are despatched or presented for acceptance, surface defects shall be removed in order to conform to 8.1. 8.2.2 Chipping andor grinding Surface defects shall be removed by chipping and/or grinding providing the residual th
44、ickness meets the minimum tolerance and that the resulting depression does not undercut the rest of the surface. If the thickness is to be reduced to below the minimum tolerance, the repair shall only be carried out following agreement with the purchaser. COPYRIGHT DIN DEUTSCHES Institut Fur Normung
45、 E.V.- EnglishLicensed by Information Handling ServicesPage 8 EN 10250-1 : 1999 8.2.3 Chipping and/or grinding and resurfacing by welding If resurfacing by welding is agreed by the purchaser, prior to the repair being carried out, surface defects exceeding the acceptance criteria shall be removed by
46、 chipping andor grinding followed by resurfacing by welding and levelling the weld. Any welding operations shall be in accordance with EN 287-1 and EN 288-1, EN 288-2 and EN 288-3. 8.3 Dimensions, shape and tolerances and nominal mass The dimensions and shape of the product shall conform to the tole
47、rances stated in the order. Any calculation of the nominal mass of the product shall be based on the following density values: - non-alloy and alloyed steels in EN 10250-2 and -3 - austenitic stainless CrNi steels in EN 10250-4 - austenitic stainless CrNiMo steels in EN 10250-4 7,85 kg/dm3 7,9 kg/dm
48、3 8 ,O kg/dm3 8.4 Compatibility with non-destructive testing NDT The agreed requirements for surface finish shall be compatible with the requirements of the reference to NDT standards. (EN 10228). 9 Chemical composition 9.1 Cast analysis The chemical composition of the steel, determined by cast anal
49、ysis, shall conform to the requirement specified in the relevant Parts of EN 10250. Elements not listed in the composition tables in the relevant Parts of EN 10250 shall not be intentionally added without the agreement of the purchaser except for finishing the cast (see options A.7 and A.8). 9.2 Product analysis (optional requirement) If required and specified by the purchaser a product analysis shall be carried out and reported instead of a cast analysis, (see A.9). The results of a product analysis on samples taken and prepared in accordance with clause 1 1, shall not
