BS EN 3278:2019 pdf download

BS EN 3278:2019 pdf download.Aerospace series – Sleeves, tubular, protruding head, in corrosion resisting steel, passivated (0,25 mm wall thickness)
This document (EN 3278:2019) has been prepared by the Aerospace and Defence Industries Association of Europe – Standardization (ASD-STAN]. After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2020, and conflicting national standards shall be withdrawn at the latest by April 2020. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 3278:2012. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This European standard specifies the characteristics and technical requirements for protruding head tubular sleeves, in corrosion resisting steel, which may be plain or provided with a series of annular grooves.
Passivated sleeves are for use in aerospace assemblies whose maximum operating temperature does not exceed 650 °C. The operating temperatures for aluminium pigmented sleeves should not exceed 230 °C.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2175, Heat resisting alloy FE-PA2602 (X4NiCrTiMoV26-15)- Solution treated and precipitation treated一Sheet, strip and plate- 0,5 mm≤a≤10 mm- Rm 2 850 MPa1
EN 2424, Aerospace series一Marking of aerospace products
EN 2516, Aerospace series一Passivation of corrosion resisting steels and decontamination of nickel base alloys
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
一ISO Online browsing platform: available at http:/ /www.iso.org/obp
一IEC Electropedia: available at http://www.electropedia.org/
3.1 crack
rupture in the material which may extend in any direction and which may be intercrystalline or transcrystalline in character
3.2 seam
open surface defect which is the result of the extrusion of the material
3.3 lap
surface defect caused by folding over metal fins or sharp corners and then rolling or forging them into the surface
4 Required characteristics
4.1 Configuration一Dimensions 一Tolerances
The configuration shall be in accordance with Figure 1; the dimensions and tolerances shall conform to the values shown in Figure 1, in Table 1, and Table 2 after surface treatment.