SIST EN 3818:2005
(Main)Aerospace series - Bolts, MJ threads, in titanium alloy TI-P64001 - Strength class: 1 100 MPa (at ambient temperature) - Technical specification
Aerospace series - Bolts, MJ threads, in titanium alloy TI-P64001 - Strength class: 1 100 MPa (at ambient temperature) - Technical specification
This standard specifies the characteristics, qualification and acceptance requirements for bolts with MJ threads in TI-P64001.
Strength class: 1 100 MPa
It is applicable whenever referenced.
Luft- und Raumfahrt - Schrauben, MJ-Gewinde, aus Titanlegierung TI-P64001 - Festigkeitsklasse: 1 100 MPa (bei Raumtemperatur) - Technische Lieferbedingungen
Série aérospatiale - Vis a filetage MJ, en alliage de titane TI-P64001 - Classe de résistance : 1 100 MPa (a température ambiante) - Spécification technique
Aerospace series - Bolts, MJ threads, in titanium alloy TI-P64001 - Strength class: 1 100 MPa (at ambient temperature) - Technical specification
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 3818:2005
01-junij-2005
1DGRPHãþD
SIST EN 3818:2004
Aerospace series - Bolts, MJ threads, in titanium alloy TI-P64001 - Strength class:
1 100 MPa (at ambient temperature) - Technical specification
Aerospace series - Bolts, MJ threads, in titanium alloy TI-P64001 - Strength class: 1 100
MPa (at ambient temperature) - Technical specification
Luft- und Raumfahrt - Schrauben, MJ-Gewinde, aus Titanlegierung TI-P64001 -
Festigkeitsklasse: 1 100 MPa (bei Raumtemperatur) - Technische Lieferbedingungen
Série aérospatiale - Vis a filetage MJ, en alliage de titane TI-P64001 - Classe de
résistance : 1 100 MPa (a température ambiante) - Spécification technique
Ta slovenski standard je istoveten z: EN 3818:2004
ICS:
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
SIST EN 3818:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 3818:2005
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SIST EN 3818:2005
EUROPEAN STANDARD
EN 3818
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.030.20 Supersedes EN 3818:2003
English version
Aerospace series - Bolts, MJ threads, in titanium alloy TI-
P64001 - Strength class: 1 100 MPa (at ambient temperature) -
Technical specification
Série aérospatiale - Vis à filetage MJ, en alliage de titane Luft- und Raumfahrt - Schrauben, MJ-Gewinde, aus
TI-P64001 - Classe de résistance : 1 100 MPa (à Titanlegierung TI-P64001 - Festigkeitsklasse: 1 100 MPa
température ambiante) - Spécification technique (bei Raumtemperatur) - Technische Lieferbedingungen
This European Standard was approved by CEN on 11 September 2003.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3818:2004: E
worldwide for CEN national Members.
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SIST EN 3818:2005
EN 3818:2004 (E)
Contents Page
Foreword.3
1 Scope.4
2 Normative references.4
3 Terms and definitions .4
4 Quality assurance.6
4.1 Qualification.6
4.2 Acceptance.6
5 Requirements.6
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SIST EN 3818:2005
EN 3818:2004 (E)
Foreword
This document (EN 3818:2004) has been prepared by the European Association of Aerospace
Manufacturers - Standardization (AECMA-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
AECMA, 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 May 2005, and conflicting national standards shall be withdrawn at
the latest by May 2005.
This document supersedes EN 3818:2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and the United Kingdom.
3
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SIST EN 3818:2005
EN 3818:2004 (E)
1 Scope
This standard specifies the characteristics, qualification and acceptance requirements for bolts with
MJ threads in TI-P64001, for aerospace applications.
1)
Strength class: 1 100 MPa
It is applicable whenever referenced.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3452, Non-destructive testing — Penetrant inspection — General principles
ISO 4288, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Rules and
procedures for the assessment of surface texture
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts
ISO 6892, Metallic materials — Tensile testing at ambient temperature
ISO 7961, Aerospace — Bolts — Test methods
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace
2)
standard parts
3 Terms and definitions
For the purposes of this standard the following terms and definitions apply.
3.1
batch
quantity of finished bolts, of the same type and same diameter, produced from a material obtained from the
same melt, manufactured in the course of the same production cycle, following the same manufacturing
route and having undergone all the relevant heat treatments and surface treatments
3.2
inspection lot
quantity of bolts from a single production batch with the same part number which completely defines the bolt
3.3 Surface discontinuities
3.3.1
crack
rupture in the material which may extend in any direction and which may be intercrystalline or transcrystalline
in character
1) Minimum tensile strength of the material at ambient temperature
2) Published as AECMA Prestandard at the date of publication of this standard
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SIST EN 3818:2005
EN 3818:2004 (E)
3.3.2
seam
open surface defect
3.3.3
lap
surface defect caused by folding over metal fins or sharp corners and then compressing them into the
surface
3.3.4
inclusions
non-metallic particles originating from the material manufacturing process. These particles may be isolated
or arranged in strings
3.4
simple random sampling
the taking of n items from a population of N items in such a way that all possible combinations of n items
have the same probability of being chosen
3.5
major defect
a defect, other than critical, that is likely to result in a failure or to reduce materially the usability of the
considered product for its intended purpose
3.6
minor defect
a defect that is not likely to reduce materially the usability of the considered product for its intended purpose,
or that is a departure from established specification having little bearing on the effective use or operation of
this product
3.7
sampling plan
a plan according to which one or more samples are taken in order to obtain information and possibly to reach
a decision
3.8
limiting quality (LQ )
10
in a sampling plan, the quality level which corresponds to the specified 10 % probability of acceptance
3.9
acceptance quality limit (AQL)
a quality limit which in a sampling plan corresponds to a specified but relatively high probability of acceptance
It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for
purposes of sampling inspection can be considered satisfactory as a process average.
3.10
finished bolt
a bolt ready for use, inclusive of any possible treatments and/or surface coatings, as specified in the product
standard or definition document
3.11
definition document
document specifying all the requirements for finished bolts
5
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SIST EN 3818:2005
EN 3818:2004 (E)
4 Quality assurance
4.1 Qualification
EN 9133
Qualification inspections and tests (requirements, methods, numbers of bolts) are specified in Table 1. They
shall be carried out on:
each type and diameter of bolt;
20 bolts selected from a single batch by simple random sampling.
The test programme may possibly be reduced, or the qualification be granted without inspection or testing
Any such decision shall be based on the results obtained on similar types and diameters of bolts provided
that the design and manufacturing conditions are identical.
Table 2 indicates the allocation of bolt samples for the inspections and tests.
4.2 Acceptance
4.2.1 Purpose
The purpose of acceptance inspections and tests is to check, as simply as possible, by a method
representative of actual use conditions, with the uncertainty inherent to statistical sampling, that the bolts
constituting the batch satisfy the requirements of this standard.
4.2.2 Conditions
Acceptance inspections and tests (requirements, methods, numbers of bolts) are specified in Table 1. They
shall be carried out on each batch. Bolts from the batch to be tested shall be selected by simple random
sampling.
Each bolt may be submitted to several inspections or tests.
If a more stringent inspection is deemed necessary, all or part of the qualification inspections and tests may
be performed during the acceptance inspection and testing. In this case, the number of bolts submitted to
these inspections and tests is the same as that submitted for qualification inspection and tests.
4.2.3 Responsability
Acceptance inspections and tests shall be carried out by the manufacturer, or under his responsibility.
4.2.4 Inspection and test report
A test report showing actual numerical values shall be provided if specified in the purchase order.
5 Requirements
See Table 1.
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SIST EN 3818:2005
EN 3818:2004 (E)
Table 1 — Technical requirements and test methods
a
Clause Characteristic Requirement Inspection and test method Q/A Sample
size
5.1 Material
In accordance with the Chemical analysis or Q
product standard or certificate of conformity
A
definition document issued by the manufacturer
of the semi-finished product
5.2 Dimensions, In accordance with the Standard gauging Q 15
tolerances and
product standard or
A Tables
tolerances of definition document
3 and 4
form and
position
5.3 Manufacturing
5.3.1 Forging The head of the bolts shall be According to the route of Q
forged by a hot forging manufacture
process before heat
treatment.
The equipment shall be
The equipment shall ensure a approved.
uniform temperature
throughout the batch.
5.3.2 Heat treatment The forged blanks shall be According to process control Q
heat treated to produce the
properties required by the
definition document.
Blanks shall not be heat The equipment shall be
treated more than twice. approved.
5.3.3 Removal of No sign of surface Visual examination
surface
contamination or oxidation
contamination
If machining is required the
(bearing face
requirements of 5.5.1 shall be
and shank)
respected.
5.3.4 Heat to shank The fillet radius shall be cold Visual examination at a Q 5
fillet rolled after heat treatment and suitable magnification of × 10
A Tables
machining so as to remove all
to × 20 and dimensional
3 and 4
visual signs of machining and
check
to create superficial cold
working. The deformation
shall not exceed the values in
Figure 1.
The requirements apply on
bolts except on the following:
a) threaded to head bolts;
b) bolts with a nominal
diameter < 5 mm.
5.3.5 Threads Formed by a single rolling According to the route of Q
process after full heat manufacture
treatment
5.3.6 Surface
In accordance with the ISO 4288 Q 5
roughness product standard or definition
Visual examination A Tables
document
3 and 4
continued
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SIST EN 3818:2005
EN 3818:2004 (E)
Table 1 (continued)
a
Clause Characteristic Requirement Inspection and test method Q/A Sample
size
5.3.7 Surface coating
In accordance with the See applicable coating Q 5
product standard or definition standard.
A Tables
document
3 and 4
5.4 Mechanical A test sample selected from
properties
each diameter of bar or wire
from each cast shall be heat
treated together with a
production batch of bolts.
The sample selected shall be
sufficient to provide tensile
test pieces. The test
specimens shall meet the
mechanical properties
required by the material
standard.
5.4.1 Tensile strength If stress durability is ISO 7961 for bolts Q 5
necessary, see 5.5.6, then
ISO 6892 for test specimens A Table 6
tensile test is not carried out.
or
The applicable tensile loads
Table 7
are specified in Table 5.
This test applies on bolt,
except on the following cases,
but failure in the bearing face
and shank zone is not
permissible:
a) protruding head bolts of
grip length < twice the
nominal shank diameter;
b) countersunk head bolts of
grip length < × 2,5 the nominal
shank diameter;
c) threaded to head bolts of
overall length < × 3 the
nominal shank diameter or
bolts having an overall length
< 18 mm;
d) bolts with a thread length
< 1,5 times the thread nominal
diameter;
e) bolts of diameters of
< 4 mm.
continued
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SIST EN 3818:2005
EN 3818:2004 (E)
Table 1 (continued)
a
Clause Characteristic Requirement Inspection and test method Q/A Sample
size
5.4.2 Tension fatigue Life: ISO 7961 Q 5
strength
– mean value:
min. 65 000 cycles
– individual value:
min. 45 000 cycles
max. 130 000 cycles
Frequency: 140 Hz max.
Loads: see Table 5.
This test applies on bolts
except on the following:
a) protruding head bolts of
grip length < twice the
nominal shank diameter;
b) countersunk head bolts of
grip length < × 2,5 the nominal
shank diameter;
c) bolts with a nominal
diameter < 5 mm;
d) threaded to head bolts.
For individual fatigue life values
exceeding 65 000 cycles,
breaking may occur in any
place.
For individual fatigu
...
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