ASD-STAN PREN 4631-2011 Aerospace series Steel X4CrNiMo16-5-1 (1 4418) Air melted Hardened and tempered Bar De less than or equal to 200 mm 900 MPa less than or equal to Rm less th.pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4631 Edition P 2 November 2011 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P

2、1 of August 2006 and will supersede EN 4627:2007Descriptors: ENGLISH VERSION Aerospace series Steel X4CrNiMo16-5-1 (1.4418) Air melted Hardened and tempered Bar De 200 mm 900 MPa Rm 1 050 MPa Srie arospatiale Acier X4CrNiMo16-5-1 (1.4418) labor a lair Tremp et revenu Barres De 200 mm 900 MPa Rm 1 05

3、0 MPa Luft- und Raumfahrt Stahl X4CrNiMo16-5-1 (1.4418) Lufterschmolzen Gehrtet- und angelassen Stangen De 200 mm 900 MPa Rm 1 050 MPa This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardizat

4、ion). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeabilit

5、y is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to

6、 full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1 November 2011 Comments should be sent within

7、 six months after the date of publication to ASD-STAN Metallic Material Domain Copyright 2011 by ASD-STAN prEN 4631:2011 (E) 2 Contents Page Foreword 2 Introduction . 3 1 Scope 4 2 Normative references 4 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Metallic Ma

8、terial Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4631:2011 (E) 3 Introduction This standard is part of the series of EN metallic material standards for

9、aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-005. prEN 4631:2011 (E) 4 1 Scope This standard specifies the requirements relating to: Steel X4CrNiMo16-5-1 (1.4418) Air melted Hardened and tempered B

10、ar De 200 mm 900 MPa Rm 1 050 MPa for aerospace applications. NOTE Other designation: Z 8 CND 17-04. Only the chemical composition of this standard must be considered. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referenc

11、es, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2950, Aerospace series Test method Wrought heat resisting alloys Semi-finished products and parts Conditions for macrographic and micrographic examination

12、Atlas of structures and defects EN 2951, Aerospace series Metallic materials Test method Micrographic determination of content of non-metallic inclusions EN 4050-4, Aerospace series Test method for metallic materials Ultrasonic inspection of bars, plates, forging stock and forgings Part 4: Acceptanc

13、e criteria 1)EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use EN 4500-005, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 005: Specific rules for steels 1)EN 4629

14、, Aerospace series Steel X4CrNiMo16-5-1 (1.4418) Air melted Hardened and tempered Forging stock De 300 mm 1)EN 4700-002, Aerospace series Steel and heat resisting alloys Wrought products Technical specification Part 002: Bar and section 1)EN ISO 643, Steels Micrographic determination of the apparent

15、 grain size (ISO 643:2003) AMS 2315, Determination of delta ferrite content 2)1) Published as ASD-STAN Standard at the date of publication of this standard (www.asd-stan.org). 2) Published as SAE National (US) Society of Automotive Engineers(http:/www.sae.org/). prEN 4631:2011 (E) 5 1 Material desig

16、nation Steel X4CrNiMo16-5-1 (1.4418) 2 Chemical composition % Element C Si MnaP bS bN Cr Mo Ni Fe min. 0,020 15,00 0,80 4,00 Base max. 0,06 0,70 1,50 0,030 0,005 17,00 1,50 6,00 3 Method of melting Air melted 4.1 Form Bar 4.2 Method of production 4.3 Limit dimension(s) mm De 200 5 Technical specific

17、ation EN 4700-002 6.1 Delivery condition Annealed Hardened and tempered Heat treatment 1 010 C 1 060 C / OQ or WQ c 550 C 620 C 6.2 Delivery condition code A U 7 Use condition Hardened and tempered Delivery condition Heat treatment Delivery condition 1 010 C 1 060 C / OQ or WQ c 550 C 620 C Characte

18、ristics 8.1 Test sample(s) See EN 4700-002. 8.2 Test piece(s) See EN 4700-002. 8.3 Heat treatment Annealed Use condition 9 Dimensions concerned mm De 200 De 75 75 De 200 10 Thickness of cladding on each face % 11 Direction of test piece L LT 12 T Temperature C Ambient Ambient Ambient 13 Proof stress

19、 Rp0,2MPa 700 700 14 Strength Rm MPa 900 Rm 1 050 900 Rm 1 050 15 Elongation A % 16 12 16 Reduction of area Z % 17 Hardness HBW 293 269 HBW 331 269 HBW 331 18 Shear strength Rc MPa 19 Bending k 20 Impact strength KV J 120 J at 20 C Notch direction T 70 J at 40 C Notch direction T 60 J at 20 C Notch

20、direction L 35 J at 40 C Notch direction L 21 C Temperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress R MPa 26 Elongation at rupture A % 27 Notes (see line 98) a, b, cprEN 4631:2011 (E) 6 30 Microstructure EN 4700-002 1 See AMS 2315. 7 The ferrite content shall not exceed 5 %.3

21、4 Grain size EN 4700-002 1 See EN ISO 643. 7 G 5 44 External defects EN 4700-002 7 Visual 50 Cleanliness/inclusion content EN 4700-002 (micro cleanness) 1 See EN 2951. 7 Category 2 51 Macrostructure EN 4700-002 (grain flow) 1 See EN 2950. 61 Internal defects EN 4700-002 1 See EN 4050-4. 7 Class 4 95

22、 Marking inspection EN 4700-002 96 Dimensional inspection EN 4700-002 98 Notes a Where a higher impact strength is required, the maximum Mn content may be increased to 2 % subject to agreement between the customer and the supplier.b For specific welding applications (e.g. high power beam), and after agreement between manufacturer and purchaser, S+P should be equal or less than 0,023 %.c Air quenching may be used for De 20 mm. 99 Typical use prEN 4631:2011 (E) 7 100 Product qualification Qualification programme to be agreed between manufacturer and purchaser.