EN 754-7:2016

Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form

This European Standard specifies the tolerances on dimensions and form for aluminium and aluminium alloys cold drawn seamless tubes with an outside diameter (OD) from 3 mm to 350 mm (round tube, see Figure 1) or with a cross section contained within a circumscribing circle (CD) from 8 mm to 300 mm (other than round tube, see Figure 2) supplied in straight lengths.
This European Standard only applies to tube produced by the seamless die/mandrel method of extrusion (and then cold drawn to the final dimensions required).
The temper designations used in this part are according to EN 515.
This document applies to cold drawn, seamless tube for general engineering applications.
This document does not apply to:
-   cold drawn tube produced by the porthole/bridge method (EN 754-8),
-   tubes delivered in coils (EN 13958),
-   coiled tubes cut to length (EN 13958).
(...)

Aluminium und Aluminiumlegierungen - Gezogene Stangen und Rohre - Teil 7: Nahtlose Rohre, Grenzabmaße und Formtoleranzen

Diese Europäische Norm legt die Grenzabmaße und Formtoleranzen für gezogene nahtlose Rohre aus Aluminium und Aluminiumlegierungen mit einem Außendurchmesser (OD) (en: outer diameter) von 3 mm bis 350 mm (Rundrohre, siehe Bild 1) oder mit einem Querschnitt, der in einem Umschlingungskreis (CD) (en: circumscribing circle) von 8 mm bis 300 mm enthalten ist (andere als Rundrohre, siehe Bild 2) fest. Sie werden in geraden Längen geliefert.
Diese Europäische Norm gilt nur für Rohre, die nach dem nahtlosen Strangpressverfahren hergestellt (und dann auf die geforderten Endmaße gezogen) werden.
Die in diesem Dokument verwendeten Bezeichnungen der Werkstoffzustände entsprechen EN 515.
Dieses Dokument gilt für gezogene nahtlose Rohre für allgemeine Anwendungen.
Dieses Dokument gilt nicht für:
   Rohre, die nach dem Strangpressverfahren mit Kammer /Brückenwerkzeug hergestellt werden
(EN 754-8);
   Rohre, die in Ringen geliefert werden (EN 13958);
   Rohre in Ringen, die auf Länge geschnitten werden (EN 13958).

Aluminium et alliages d'aluminium - Barres et tubes étirés - Partie 7 : Tubes filés sur aiguille, tolérances sur dimensions et forme

La présente Norme européenne spécifie les tolérances sur dimensions et forme des tubes filés sur aiguille en aluminium et alliages d’aluminium avec un diamètre extérieur (OD) de 3 mm à 350 mm (tube rond, voir la Figure 1) ou avec une section transversale contenue dans le cercle circonscrit (CD) de 8 mm à 300 mm (autre que tube rond, voir la Figure 2) fournis en longueurs droites.
La présente Norme européenne ne s’applique qu’aux tubes produits à l’aide d’une méthode de filage sans soudure/sur aiguille (puis étirés à froid aux dimensions finales requises).
La désignation des états métallurgiques utilisés dans cette partie est conforme à l’EN 515.
Le présent document s’applique aux produits étirés, filés sur aiguille pour applications générales.
Il ne s’applique pas :
-   aux tubes filés produits à l’aide d’une méthode de filage à pont (EN 754-8) ;
-   aux tubes livrés en couronnes (EN 13958) ;
-   aux tubes en couronnes découpés à longueur (EN 13958).
(...)

Aluminij in aluminijeve zlitine - Hladno vlečene palice/drogovi in cevi - 7. del: Nevarjene (narejene iz celega) cevi, tolerance mer in oblike

Ta evropski standard določa tolerance mer in oblike za hladno vlečene nevarjene cevi iz aluminija in aluminijeve zlitine z zunanjim premerom (OD) od 3 mm do 350 mm (okrogla cev, glej sliko 1) ali s presekom v odprtini (CD) velikosti od 8 mm do 300 mm (neokrogla cev, glej sliko 2), dobavljene v ravnih presekih.
Ta evropski standard se uporablja samo za cevi, izdelane z metodo iztiskovanja s celim utopom/trnom (ki so nato hladno vlečene do zahtevane končne mere).
Oznake za popuščanje, uporabljene v tem delu, so skladne s standardom EN 515.
Ta dokument se uporablja za hladno vlečene nevarjene cevi za splošno tehnično uporabo.
Ta dokument se ne uporablja za:
– hladno vlečene cevi, izdelane z metodo iztiskovanja z večdelnimi matricami/mostičkom (EN 754-8),
– cevi, dobavljene v navojih (EN 13958),
– navojne cevi, razrezane po dolžini (EN 13958).

General Information

• Status: Published
• Publication Date: 07-Jun-2016
• Withdrawal Date: 30-Dec-2016
• ICS: 77.150.10 - Aluminium products
• Technical Committee: CEN/TC 132 - Aluminium and aluminium alloys
• Drafting Committee: CEN/TC 132/WG 5 - Extruded and drawn products
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 15-Jun-2022
• Ref Project: SIST EN 754-7:2016 - Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form

Relations

• Replaces: EN 754-7:2008 - Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form
• Effective Date: 18-Jun-2014

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2016
1DGRPHãþD
SIST EN 754-7:2008
$OXPLQLMLQDOXPLQLMHYH]OLWLQH+ODGQRYOHþHQHSDOLFHGURJRYLLQFHYLGHO
1HYDUMHQHQDUHMHQHL]FHOHJDFHYLWROHUDQFHPHULQREOLNH
Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes,
tolerances on dimensions and form
Aluminium und Aluminiumlegierungen - Gezogene Stangen und Rohre - Teil 7: Nahtlose
Rohre, Grenzabmaße und Formtoleranzen
Aluminium et alliages d'aluminium - Barres et tubes étirés - Partie 7 : Tubes filés sur
aiguille, tolérances sur dimensions et forme
Ta slovenski standard je istoveten z: EN 754-7:2016
ICS:
77.150.10 Aluminijski izdelki Aluminium products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 754-7
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2016
EUROPÄISCHE NORM
ICS 77.150.10 Supersedes EN 754-7:2008
English Version
Aluminium and aluminium alloys - Cold drawn rod/bar
and tube - Part 7: Seamless tubes, tolerances on
dimensions and form
Aluminium et alliages d'aluminium - Barres et tubes Aluminium und Aluminiumlegierungen - Gezogene
étirés - Partie 7 : Tubes filés sur aiguille, tolérances sur Stangen und Rohre - Teil 7: Nahtlose Rohre,
dimensions et forme Grenzabmaße und Formtoleranzen
This European Standard was approved by CEN on 11 April 2016.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 754-7:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 5
3 Tolerances on dimensions . 5
3.1 General . 5
3.2 Diameter - Round tube . 5
3.3 Width, depth or width across flats - squares, rectangles, hexagons, octagons . 6
3.4 Wall thickness variation (eccentricity) . 7
3.5 Length . 8
3.6 Squareness of cut ends . 9
4 Tolerances on form . 9
4.1 General . 9
4.2 Straightness . 9
4.3 Convexity-Concavity . 10
4.4 Twist . 11
4.5 Angularity . 12
4.6 Corner and fillet radii . 13
4.7 Depth of dents for round tube . 13
Annex A (informative) Wall thickness variation (eccentricity) . 14
A.1 General . 14
A.2 Specifying round tube sizes and tolerances . 14
Bibliography . 16

European foreword
This document (EN 754-7:2016) has been prepared by Technical Committee CEN/TC 132 “Aluminium
and aluminium alloys”, the secretariat of which is held by AFNOR.
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 December 2016, and conflicting national standards
shall be withdrawn at the latest by December 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 754-7:2008.
The following technical modifications have been introduced during the revision:
— correction of Subclause 3.2, Diameter - Round tube.
EN 754 comprises the following parts under the general title Aluminium and aluminium alloys — Cold
drawn rod/bar and tube:
— Part 1: Technical conditions for inspection and delivery;
— Part 2: Mechanical properties;
— Part 3: Round bars, tolerances on dimensions and form;
— Part 4: Square bars, tolerances on dimensions and form;
— Part 5: Rectangular bars, tolerances on dimensions and form;
— Part 6: Hexagonal bars, tolerances on dimensions and form;
— Part 7: Seamless tubes, tolerances on dimensions and form;
— Part 8: Porthole tubes, tolerances on dimensions and form.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
1 Scope
This European Standard specifies the tolerances on dimensions and form for aluminium and aluminium
alloys cold drawn seamless tubes with an outside diameter (OD) from 3 mm to 350 mm (round tube,
see Figure 1) or with a cross section contained within a circumscribing circle (CD) from 8 mm to
300 mm (other than round tube, see Figure 2) supplied in straight lengths.
This European Standard only applies to tube produced by the seamless die/mandrel method of
extrusion (and then cold drawn to the final dimensions required).
The temper designations used in this part are according to EN 515.
This document applies to cold drawn, seamless tube for general engineering applications.
This document does not apply to:
— cold drawn tube produced by the porthole/bridge method (EN 754-8),
— tubes delivered in coils (EN 13958),
— coiled tubes cut to length (EN 13958).

Figure 1 — Round tube
Figure 2 — Circumscribing circle for other than round tube
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 754-1:2016, Aluminium and aluminium alloys — Cold drawn rod/bar and tube — Part 1: Technical
conditions for inspection and delivery
3 Tolerances on dimensions
3.1 General
When outside diameter (OD), inside diameter (ID), and wall thickness (t) (or their equivalent
dimensions in other than round tube), are all specified, standard tolerances shall apply to any two of
these dimensions, but not to all three. As a result, the purchaser shall only state two nominal
dimensions on any given order.
3.2 Diameter - Round tube
Mean diameter is defined as the average of two diameter measurements taken at right angles to each
other at any position along the length.
The maximum allowable deviation of diameter at any point from the specified diameter is the maximum
difference measured at any point along the length of the tube, i.e. it is inclusive of any ovality in the
cross section.
The tolerances on diameter are specified in Table 1.
As detailed in EN 754-1:2016, Clause 4, if the original order does not make clear the nature of the
diameter tolerances required, the supplier shall interpret them as inclusive of any ovality (i.e. maximum
allowable deviation at any point from the specified diameter in Table 1). However, the diameter
tolerances may be expressed as both mean and inclusive of ovality if this is specifically requested by the
purchaser.
Table 1 — Tolerances on diameter for round tube
Dimensions in millimetres
Tolerance on diameter
Diameter
Maximum allowable deviation of diameter at
(OD or ID)
a
any point from specified diameter
Maximum allowable deviation of
Non-annealed
mean diameter from specified
Tempers O,
Up to and Heat treated
e
Over and non heat H111 and
diameter
c
including tube
Tx510
b
treated tube
d d d d
≥ 3 8 ±0,04 ±0,08 ±0,12 ±0,25
8 18 ±0,05 ±0,09 ±0,15 ±0,30
18 30 ±0,06 ±0,10 ±0,20 ±0,40
30 50 ±0,07 ±0,12 ±0,25 ±0,50
50 80 ±0,09 ±0,15 ±0,36 ±0,70
80 120 ±0,14 ±0,20 ±0,60 ±1,2
120 200 ±0,25 ±0,40 ±1,2 ±2,4
200 350 ±0,38 ±0,60 ±1,7 ±3,4
a
Not applicable to tubes having a wall thickness less than 2,5 % of the specified outside diameter. The tolerance for
tubes with wall thickness less than 2,5 % of the specified outside diameter shall be determined by multiplying the
applicable tolerance as follows:
— wall thickness over 2,0 % up to and including 2,5 % of outside diameter: 1,5 × tolerance;
— wall thickness over 1,5 % up to and including 2,0 % of outside diameter: 2,0 × tolerance;
— wall thickness over 1,0 % up to and including 1,5 % of outside diameter: 3,0 × tolerance;
— wall thickness over 0,5 % up to and including 1,0 % of outside diameter: 4,0 × tolerance.
b
Applies to all alloys in H1x, H2x, H3x tempers, and to alloy EN AW-6063 in the T832 temper.
c
Applies to all alloys in T3, T4, T6, T66, T73, T8, T9 and Tx511 tempers.
d
This tolerance applies for outside diameter only, i.e. tube in this size range can only be specified as “Outside
Diameter x Wall Thickness”.
e
Shall not apply to Tx510 or Tx511 tempers.

3.3 Width, depth or width across flats - squares, rectangles, hexagons, octagons
The tolerances on width, depth or width across flats are specified in Table 2.
Table 2 — Tolerances on width, depth or width across flats
Dimensions in millimetres
Width, depth or
Maximum allowable deviation of width, depth or width across flats at
a
any point from the specified value
width across flats
Up to and Non-annealed and non Annealed
c
Over Heat treated tube
b d
including heat treated tube tube
≥ 8 18 ±0,20 ±0,30 ±0,60
18 30 ±0,25 ±0,40 ±0,80
30 50 ±0,35 ±0,50 ±1,0
50 80 ±0,50 ±0,70 ±1,4
80 120 ±0,70 ±1,0 ±2,0
120 200 ±1,0 ±1,5 ±3,0
a
Not applicable to tubes having a wall thickness less than 2,5 % of the specified outside width, depth or
width across flats. The tolerance for tubes with wall thickness less than 2,5 % of the specified width, depth
or width across flats shall be determined by multiplying the applicable tolerance as follows:
— wall thickness over 2,0 % up to and including 2,5 % of outside parameter: 1,5 × tolerance;
— wall thickness over 1,5 % up to and including 2,0 % of outside parameter: 2,0 × tolerance;
— wall thickness over 1,0 % up to and including 1,5 % of outside parameter: 3,0 × tolerance;
— wall thickness over 0,5 % up to and including 1,0 % of outside parameter: 4,0 × tolerance.
b
Applies to all alloys in F, H1x, H2x, H3x tempers.
c
Applies to all alloys in T3, T4, T6, T66, T73, T8, T9 and Tx511 tempers.
d
Applies to all alloys in O, H111 and Tx510 tempers.

3.4 Wall thickness variation
...