EN 754-7:2008

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

This document 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 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

Dieses Dokument legt die Grenzabmaße und Formtoleranzen für gezogene nahtlose Rohre aus Aluminium
und Aluminiumlegierungen mit einem Außendurchmesser (OD) von 3 mm bis 350 mm (Rundrohre, siehe
Bild 1) oder mit einem Querschnitt, der in einem Umschlingungskreis (CD) von 8 mm bis 300 mm enthalten ist
(andere als Rundrohre, siehe Bild 2) fest. Sie werden in geraden Längen geliefert.
Dieses Dokument 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

Le présent document 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 Figure 1) ou avec une section transversale contenue dans le cercle circonscrit (CD) de 8 mm à 300 mm (autre que tube rond, voir Figure 2), fournis en longueurs droites.
La présente norme 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 produits livrés en couronnes (EN 13958) ;
   aux tubes en couronnes découpés à longueur (EN 13958).
Figure 1 Tube rond
Figure 2  Cercle circonscrit pour produits autres que tube rond

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

General Information

• Status: Withdrawn
• Publication Date: 18-Mar-2008
• Withdrawal Date: 07-Jun-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: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 08-Jun-2016
• Ref Project: SIST EN 754-7:2008 - Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form

Relations

• Replaces: EN 754-7:1998 - Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form
• Effective Date: 22-Dec-2008
• Replaced By: EN 754-7:2016 - 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-maj-2008
1DGRPHãþD
SIST EN 754-7:1999
$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 754-7:2008
ICS:
77.150.10
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 754-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2008
ICS 77.150.10 Supersedes EN 754-7:1998
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 étirés - Aluminium und Aluminiumlegierungen - Gezogene Stangen
Partie 7: Tubes filés sur aiguille, tolérances sur dimensions und Rohre - Teil 7: Nahtlose Rohre, Grenzabmaße und
et forme Formtoleranzen
This European Standard was approved by CEN on 10 February 2008.
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 Ref. No. EN 754-7:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope.5
2 Tolerances on dimensions .6
2.1 General.6
2.2 Diameter - Round tube .6
2.3 Width, depth or width across flats - squares, rectangles, hexagons, octagons.7
2.4 Wall thickness variation (eccentricity) .7
2.5 Length.8
2.6 Squareness of cut ends .9
3 Tolerances on form.9
3.1 General.9
3.2 Straightness.9
3.3 Convexity-Concavity.10
3.4 Twist.11
3.5 Angularity.12
3.6 Corner and fillet radii.13
3.7 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
A.2.1 General.14
A.2.2 Wall thickness variation for tubes specified as OD ×××× t or ID ×××× t.14
A.2.3 Wall thickness variation for tubes specified as OD ×× ID .15
××
Bibliography .16

Foreword
This document (EN 754-7:2008) 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 September 2008, and conflicting national standards shall
be withdrawn at the latest by September 2008.
This document supersedes EN 754-7:1998.
Within its programme of work, Technical committee CEN/TC 132 entrusted CEN/TC 132/WG 5 "Extruded
and drawn products" to revise EN 754-7:1998.
The following technical modifications have been introduced during the revision:
 Clause 1: Scope is clarified with respect to what is not included
 Subclause 2.4 and Table 3: Requirements to wall thickness variation (eccentricity) is introduced
 Annex A: Informative Annex A is added explaining wall thickness variation (eccentricity)
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
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.
CEN/TC 132 affirms it is its policy that in the case when a patentee refuses to grant licenses on
standardized standards products under reasonable and not discriminatory conditions then this product
shall be removed from the corresponding standard.
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, 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 the United Kingdom.
1 Scope
This document 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 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 Tolerances on dimensions
2.1 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.
2.2 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 tolerances on diameter are specified in Table 1.
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
mean diameter from specified
Non-annealed Tempers O,
e
Up to and Heat treated
diameter
Over and non heat H111 and
c
including tube
b
treated tube Tx510
d d d d
8 ± 0,04 ± 0,08 ± 0,12 ± 0,25
≥ 3
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 x tolerance;
- wall thickness over 1,5 % up to and including 2,0 % of outside diameter : 2,0 x tolerance;
- wall thickness over 1,0 % up to and including 1,5 % of outside diameter : 3,0 x tolerance;
- wall thickness over 0,5 % up to and including 1,0 % of outside diameter : 4,0 x 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.

2.3 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
width across flats any point from the specified value
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 x tolerance;
- wall thickness over 1,5 % up to and including 2,0 % of outside parameter : 2,0 x tolerance;
- wall thickness over 1,0 % up to and including 1,5 % of outside parameter : 3,0 x tolerance;
- wall thickness over 0,5 % up to and including 1,0 % of outside parameter : 4,0 x 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.
2.4 Wall thickness variation (eccentricity)
The tolerances on wall thickness variation (eccentricity) are specified in Table 3.
Table 3 — Tolerances on wall thickness variation (eccentricity)
Nominal wall thickness
t
Tolerance on wall
Tolerance on wall
mm
thickness variation for
thickness variation for
round tube
other than round tube
Up to and (eccentricity)
a
Over %
a
including %
0,5 3 ± 10 ± 12
3 5 ± 9 ± 11
5 - ± 8 ± 10
a For OD greater than 150 mm together with and OD/t ratio of more than 10, the tolerance on wall
thickness variation shall be subject to agreement between supplier and purchaser.
NOTE Round tube dimensions can be expressed in three different ways i.e. outside
diameter (OD) × wall thickness (t), inside diameter (ID) × t (where t is the nominal wal
...