EN 3302:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts in heat resisting steel FE-PM1708 (FV535) - Classification: 1 000 MPa/550 °C - Technical specificationSérie aérospatiale - Vis en acier résistant à chaud FE-PM1708 (FV535) - Classification: 1 000 MPa/550 °C - Spécification techniqueLuft- und Raumfahrt - Schrauben aus hochwarmfestem Stahl FE-PM1708 (FV535) - Klasse: 1 000 MPa/550 °C - Technische LieferbedingungenTa slovenski standard je istoveten z:EN 3302:2007SIST EN 3302:2008en49.030.20ICS:SLOVENSKI
STANDARDSIST EN 3302:200801-marec-2008

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3302
December 2007 ICS 49.030.20 English Version
Aerospace series - Bolts in heat resisting steel FE-PM1708 (FV535) - Classification: 1 000 MPa/550 °C - Technical specification
Série aérospatiale - Vis en acier résistant à chaud FE-PM1708 (FV535) - Classification: 1 000 MPa/550 °C - Spécification technique
Luft- und Raumfahrt - Schrauben aus hochwarmfestem Stahl FE-PM1708 (FV535) - Klasse: 1 000 MPa/550 °C - Technische Lieferbedingungen This European Standard was approved by CEN on 5 November 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 © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3302:2007: E

1) Inactive for new designation, see EN 4244 and EN 4245. 2) Published as ASD Standard at the date of publication of this standard. 3) Published as ASD Prestandard at the date of publication of this standard. 4) Published as ASD Technical Report at the date of publication of this standard.

Material Material FE-PM1708 to specification EN 2493 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 definition document. 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 definition document. 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 definition document. 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 1 170 °C. 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
Harden and temper heat treatment The headed blanks shall be pre-heated to 650 °C/700 °C, then heated to (1 170 ± 10) °C, followed by oil or fast gas quench. The headed and hardened blanks shall then be tempered at (610 ± 5) °C for 2 hours to 5 hours and air cooled, followed by 620 °C/ 650 °C for 2 hours to 5 hours and air cooled.
5.3.3
Removal of surface contamination After all heat treatment the headed blanks shall have all the shank and bearing surface of the head 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 hardening, double tempering 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 definition document. Dimensional check (see 5.5.2) and visual examination. A Tables 6 and 7 continued

For parts with compound radii between head and shank, cold work onl
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