EN 3685:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts in heat resisting steel FE-PA2601 (A286) - Classification: 1 100 MPa/650 °C - Technical specificationSérie aérospatiale - Vis en acier résistant à chaud FE-PA26HT (A286) - Classification: 1 100 MPa/650 °C - Spécification techniqueLuft- und Raumfahrt - Schrauben aus hochwarmfestem Stahl FE-PA2601 (A286) - Klasse: 1 100 MPa/650 °C - Technische Lieferbedingungen49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:SIST EN 3685:2008enTa slovenski standard je istoveten z:EN 3685:200801-julij-2008SIST EN 3685:2008SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3685
April 2008 ICS 49.030.20 English Version
Aerospace series - Bolts in heat resisting steel FE-PA2601 (A286) - Classification: 1 100 MPa/650 °C - Technical specification
Série aérospatiale - Vis en acier résistant à chaud FE-PA26HT (A286) - Classification: 1 100 MPa/650 °C - Spécification technique
Luft- und Raumfahrt - Schrauben aus hochwarmfestem Stahl FE-PA2601 (A286) - Klasse: 1 100 MPa/650 °C - Technische Lieferbedingungen This European Standard was approved by CEN on 21 December 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3685:2008: E

1) Published as ASD Prestandard at the date of publication of this standard. 2) In preparation at the date of publication this standard. 3) Published as ASD Technical Report at the date of publication of this standard. 4) Published by: American Society for Testing and Materials (ASTM), 1916 Race street, Philadelphia, PA 19103-1187, USA.

Material Material FE-2601 to specification EN 3761 supplied by an approved source: shall be used for the manufacture of bolts to this standard. As stated in the material specification.
Q 25 5.2
Dimensions, tolerances of form and position, threads and quality
A Tables 6 and 7 5.2.1
Dimensions The dimensions of the finished bolts shall conform to the product standard or drawing. All dimensions shall be controlled by an approved system of gauging.
5.2.2
Tolerances of form and position Tolerances of form and position shall conform to the product standard or drawing. Tolerances of form and position shall be controlled by an approved system of gauging.
5.2.3
Threads Threads shall conform to the product standard or drawing. Threads shall be gauged by an approved system of gauging.
5.3
Manufacturing
5.3.1
Forging The heads of the bolts shall be formed by hot or cold forging. If hot forged the forging temperature shall not exceed 1 150 °C and shall be air cooled or faster. The method of forging shall be approved.
The heating equipment for forging shall be of a type which ensures a consistent temperature throughout the batch.
continued
Heat treatment The heat treatment medium or atmosphere shall not cause any surface contamination except as permitted by 5.5.6. The heat treatment equipment shall be approved.
Any scale which will not be removed by subsequent machining shall be removed by abrasive blasting. The equipment for abrasive blasting shall be approved.
5.3.2.1
Solution and precipitation heat treatment The headed blanks shall be precipitation treated at a temperature 710 °C - 730 °C holding the selected temperature within ± 8 °C for not less than 16 hours and cooling in air.
5.3.3
Removal of surface contamination After precipitation treatment the headed blanks shall have all the shank and bearing surfaces ground: a) For the removal of all surface contamination and oxide penetration; b) To obtain a clean smooth surface.
The amount of material removed from the shank diameter and underneath the head shall be as little as practicable but shall not exceed the limits of Table 2.
5.3.4
Q 25
Head to shank fillet After completion of precipitation treatment and machining the underhead radius shall be cold rolled sufficiently to remove all evidence of machining. Cold rolling the head to shank fillet radius may cause distortion of the fillet area. Any such distortion shall be in accordance with the requirements of Figure 2 unless otherwise specified on the bolt standard or drawing. Dimensional check (see 5.5.2) and visual examination. A Tables 6 and 7
For parts with compound radii between head and shank, cold work only the radius that blends with the head, however it is acceptable for cold work to extend over the compound radius.
The fillet shall not show evidence of seams or inclusions. See 5.5.7.1.
continued
Threads Threads shall be formed on the precipitation treated and machined blanks by a single rolling operation.
Q 3 5.3.6
Surface roughness The surface roughness shall be as specified on the bolt standard or drawing prior to protective treatment. The surface roughness of the thread shall be determined by visual comparator method, see ISO 4288. A Tables 6 and 7
Q 3 5.3.7
Surface coating Where applicable, all surfaces shall be coated as specified on the bolt standard or drawing. See applicable coating specification.
Tables 6 and 7 5.4
Mechanical properties A test sample shall be selected from each diameter of bar/coil drawn from each cast, and shall be heat treated together with a production batch of bolts. The sample selected shall be sufficient to provide t
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