oSIST prEN 10216-2:2023
(Main)Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
This document specifies the technical delivery conditions in two test categories for seamless tubes of circular cross section, with specified elevated temperature properties, made of non-alloy and alloy steel.
This Part of EN 10216 may also be applied for tubes of non-circular cross section; necessary modification should be agreed at the time of enquiry and order.
NOTE Once the reference of this document is published in the Official Journal of the European Union (OJEU) under Directive 2014/68/EU, pressure equipment Directive, presumption of conformity to the Essential Safety Requirements (ESR) of Directive 2014/68/EU is limited to technical data of materials in this document and does not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer of the pressure equipment, taking also into account the subsequent manufacturing processes which could affect properties of the base materials.
Nahtlose Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 2: Rohre aus unlegierten und legierten Stählen mit festgelegten Eigenschaften bei erhöhten Temperaturen
Dieses Dokument enthält die technischen Lieferbedingungen für nahtlose Rohre mit kreisförmigem Querschnitt aus unlegiertem und legiertem Stahl mit festgelegten Eigenschaften bei erhöhten Temperaturen und legt dafür zwei Prüfkategorien fest.
Dieser Teil der EN 10216 kann auch für Rohre mit nichtkreisförmigem Querschnitt angewendet werden; notwendige Anpassungen sollten bei der Anfrage und Bestellung vereinbart werden.
ANMERKUNG Nach Veröffentlichung dieses Dokumentes im EU Amtsblatt (OJEU) unter der Richtlinie 2014/68/EU, Druckgeräterichtlinie, ist die Annahme ihrer Konformität mit den grundlegenden Anforderungen (ESR) der Richtlinie 2014/68/EU auf die technischen Daten von Werkstoffen in diesem Dokument beschränkt, und es darf nicht angenommen werden, dass damit die Eignung des Werkstoffs für ein bestimmtes Ausrüstungsteil festgestellt ist. Folglich müssen die in dieser Werkstoffnorm angegebenen technischen Parameter im Hinblick auf die konstruktiven Anforderungen dieses bestimmten Ausrüstungsteils ermittelt werden, um damit zu verifizieren, dass den ESR der Druckgeräterichtlinie entsprochen wird. Dies muss durch den Ausleger der Druckgeräte geschehen, der auch den nachfolgenden Herstellungsprozess berücksichtigen muss, der die Eigenschaften des Grundmaterials verändern könnte.
Tubes sans soudure en acier pour service sous pression - Conditions techniques de livraison - Partie 2: Tubes en acier non allié et allié avec caractéristiques spécifiées à température élevée
Le présent document spécifie les conditions techniques de livraison, selon deux catégories d'essai, pour
les tubes sans soudure à section circulaire en acier non allié et allié, avec caractéristiques spécifiées à
température élevée.
La présente partie de l'EN 10216 peut aussi être appliquée aux tubes de section non circulaire ; les
modifications nécessaires feront l'objet d'un accord lors de l'appel d'offres et de la commande.
NOTE Dès lors que le présent document est publié dans le Journal officiel de l'Union européenne (JOUE) en lien
avec la Directive 2014/68/UE, Directive relative aux équipements sous pression, la présomption de conformité avec
les exigences essentielles de sécurité de la Directive 2014/68/UE se limite aux données techniques des matériaux
spécifiées dans le présent document et ne suppose pas l'adéquation des matériaux avec un appareil en particulier.
Par conséquent, l'évaluation des données techniques spécifiées dans la présente norme de matériaux par rapport
aux prescriptions de conception de cet équipement spécifique, afin de vérifier que les exigences essentielles de
sécurité de la Directive sont satisfaites, a besoin d'être effectuée par le concepteur de l'équipement sous pression,
en tenant compte également des procédés ultérieurs de fabrication qui pourraient affecter les caractéristiques des
matériaux de base.
Nevarjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 2. del: Nelegirane in legirane jeklene cevi s specificiranimi lastnostmi za delo pri povišanih temperaturah
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 10216-2:2023
01-junij-2023
Nevarjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 2. del:
Nelegirane in legirane jeklene cevi s specificiranimi lastnostmi za delo pri
povišanih temperaturah
Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2:
Non-alloy and alloy steel tubes with specified elevated temperature properties
Nahtlose Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 2:
Rohre aus unlegierten und legierten Stählen mit festgelegten Eigenschaften bei erhöhten
Temperaturen
Tubes sans soudure en acier pour service sous pression - Conditions techniques de
livraison - Partie 2: Tubes en acier non allié et allié avec caractéristiques spécifiées à
température élevée
Ta slovenski standard je istoveten z: prEN 10216-2
ICS:
23.020.32 Tlačne posode Pressure vessels
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
oSIST prEN 10216-2:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 10216-2:2023
---------------------- Page: 2 ----------------------
oSIST prEN 10216-2:2023
DRAFT
EUROPEAN STANDARD
prEN 10216-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2023
ICS 23.040.10; 77.140.75 Will supersede EN 10216-2:2013+A1:2019
English Version
Seamless steel tubes for pressure purposes - Technical
delivery conditions - Part 2: Non-alloy and alloy steel tubes
with specified elevated temperature properties
Tubes sans soudure en acier pour service sous Nahtlose Stahlrohre für Druckbeanspruchungen -
pression - Conditions techniques de livraison - Partie 2: Technische Lieferbedingungen - Teil 2: Rohre aus
Tubes en acier non allié et allié avec caractéristiques unlegierten und legierten Stählen mit festgelegten
spécifiées à température élevée Eigenschaften bei erhöhten Temperaturen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 10.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10216-2:2023 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols . 7
5 Classification and designation . 7
5.1 Classification . 7
5.2 Designation. 7
6 Information to be supplied by the purchaser . 8
6.1 Mandatory information . 8
6.2 Options . 8
6.3 Examples of an order . 9
7 Manufacturing process . 9
7.1 Steel making process . 9
7.2 Tube manufacture and delivery conditions . 9
8 Requirements . 11
8.1 General . 11
8.2 Chemical composition . 11
8.3 Mechanical properties . 16
8.4 Appearance and internal soundness. 21
8.5 Straightness . 21
8.6 Preparation of ends . 21
8.7 Dimensions, masses and tolerances . 22
9 Inspection . 29
9.1 Types of inspection . 29
9.2 Inspection documents . 29
9.3 Summary of inspection and verification testing . 29
10 Sampling . 31
10.1 Frequency of tests . 31
10.2 Preparation of samples and test pieces . 32
11 Verification test methods . 33
11.1 Chemical analysis . 33
11.2 Tensile test . 33
11.3 Flattening test . 33
11.4 Ring tensile test . 35
11.5 Drift expanding test . 35
11.6 Ring expanding test . 37
11.7 Impact test . 37
11.8 Leak tightness test . 38
11.9 Dimensional inspection . 38
11.10 Visual examination . 38
2
---------------------- Page: 4 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
11.11 Non-destructive testing .38
11.12 Material identification .39
11.13 Retests, sorting and reprocessing .39
12 Marking .39
12.1 Marking to be applied .39
12.2 Additional marking .40
13 Protection .40
Annex A (informative) Creep rupture strength values .41
Annex B (informative) Technical changes from the previous edition .51
B.1 Introduction .51
B.2 Technical changes .51
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of Directive 2014/68/EU aimed to be covered .52
Bibliography .53
3
---------------------- Page: 5 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
European foreword
This document (prEN 10216-2:2023) has been prepared by Technical Committee CEN/TC 459 “ECISS –
1
European Committee for Iron and Steel Standardization” , the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10216-2:2013+A1:2020.
For the list of the most significant technical changes that were made in prEN 10216-2:2023, see Annex B.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
EN 10216 consists of the following parts, under the general title "Seamless steel tubes for pressure
purposes – Technical delivery conditions":
— Part 1: Non-alloy steel tubes with specified room temperature properties
— Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties (the present
document)
— Part 3: Alloy fine grain steel tubes
— Part 4: Non-alloy and alloy steel tubes with specified low temperature properties
— Part 5: Stainless steel tubes
Another European Standard series covering tubes for pressure purposes is:
EN 10217 series, Welded steel tubes for pressure purposes – Technical delivery conditions
1
Through its sub-committee SC 10 “Steel tubes, and iron and steel fittings” (secretariat: UNI).
4
---------------------- Page: 6 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
1 Scope
This document specifies the technical delivery conditions in two test categories for seamless tubes of
circular cross section, with specified elevated temperature properties, made of non-alloy and alloy
steel.
This Part of EN 10216 can also be applied for tubes of non-circular cross section; necessary modification
will be agreed at the time of enquiry and order.
NOTE Once the reference of this document is published in the Official Journal of the European Union (OJEU)
under Directive 2014/68/EU, pressure equipment Directive, presumption of conformity to the Essential Safety
Requirements (ESR) of Directive 2014/68/EU is limited to technical data of materials in this document and does
not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical
data stated in this material standard against the design requirements of this specific item of equipment to verify
that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer of the pressure
equipment, taking also into account the subsequent manufacturing processes which could affect properties of the
base materials.
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 10020:2000, Definition and classification of grades of steel
EN 10021:2006, General technical delivery conditions for steel products
EN 10027-1:2016, Designation systems for steels - Part 1: Steel names
EN 10027-2:2015, Designation systems for steels - Part 2: Numerical system
EN 10168:2004, Steel products - Inspection documents - List of information and description
EN 10204:2004, Metallic products - Types of inspection documents
EN 10220:2002, Seamless and welded steel tubes - Dimensions and masses per unit length
EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms
for use in product standards
CEN/TR 10261:2018, Iron and steel - European standards for the determination of chemical composition
EN ISO 148-1:2016, Metallic materials - Charpy pendulum impact test - Part 1: Test method (ISO 148-1:
2016)
EN ISO 377:2017, Steel and steel products - Location and preparation of samples and test pieces for
mechanical testing (ISO 377:2017)
EN ISO 2566-1:2021, Steel - Conversion of elongation values - Part 1: Carbon and low-alloy steels (ISO
2566-1:2021)
EN ISO 4885:2018, Ferrous materials –Heat treatments – Vocabulary (ISO 4885:2018)
EN ISO 6892-1:2019, Metallic materials - Tensile testing - Part 1: Method of test at room temperature
(ISO 6892-1:2019)
5
---------------------- Page: 7 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
EN ISO 6892-2:2018, Metallic materials - Tensile testing - Part 2: Method of test at elevated temperature
(ISO 6892-2:2018)
EN ISO 8492:2013, Metallic materials - Tube - Flattening test (ISO 8492:2013)
EN ISO 8493:2004, Metallic materials - Tube - Drift expanding test (ISO 8493:1998)
EN ISO 8495:2013, Metallic materials - Tube - Ring expanding test (ISO 8495:2013)
EN ISO 8496:2013, Metallic materials - Tube - Ring tensile test (ISO 8496:2013)
2
EN ISO 10893-1:2011, Non-destructive testing of steel tubes - Part 1: Automated electromagnetic testing
of seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic leak-
tightness (ISO 10893-1)
3
Non-destructive testing of steel tubes - Part 3: Automated full peripheral flux
EN ISO 10893-3:2011,
leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the
detection of longitudinal and/or transverse imperfections (ISO 10893-3)
4
EN ISO 10893-8:2011, Non-destructive testing of steel tubes - Part 8: Automated ultrasonic testing of
seamless and welded steel tubes for the detection of laminar imperfections (ISO 10893-8)
5
EN ISO 10893-10:2011, Non-destructive testing of steel tubes - Part 10: Automated full peripheral
ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of
longitudinal and/or transverse imperfections (ISO 10893-10)
EN ISO 14284:2022, Steel and iron - Sampling and preparation of samples for the determination of chemical
composition (ISO 14284:2022)
ISO 11484:2019, Steel products - Employer’s qualification system for non-destructive testing (NDT)
personnel
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10021:2006,
EN ISO 4885:2018 and EN 10266:2003 and the following apply.
3.1
test category
classification that indicates the extent and level of inspection and testing
3.2
employer
organization for which a person works on a regular basis
Note 1 to entry: The employer may be either the tube manufacturer or supplier or a third party organization
providing Non-Destructive Testing (NDT) services.
2
As impacted by EN ISO 10893-1:2011/A1:2020.
3
As impacted by EN ISO 10893-3:2011/A1:2019 and EN ISO 10893-3:2011/A2:2020.
4
As impacted by EN ISO 10893-8:2011/A1:2020.
5
As impacted by EN ISO 10893-10:2011/A1:2020.
6
---------------------- Page: 8 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
4 Symbols
For the purposes of this document, the symbols given in EN 10266:2003 and the following apply:
d specified inside diameter
d specified minimum inside diameter
min
T specified minimum wall thickness
min
D calculated outside diameter
c
d calculated inside diameter
c
T calculated wall thickness
c
TC test category
5 Classification and designation
5.1 Classification
In accordance with the classification system in EN 10020:2000, the steel grades P195GH, P235GH and
P265GH are classified as non-alloy quality steels and the other steel grades are classified as alloy special
steels.
5.2 Designation
5.2.1 For the tubes covered by this Part of EN 10216, the steel designation consists of:
— the number of this Part of EN 10216;
plus either:
— the steel name in accordance with EN 10027-1:2016;
or:
— the steel number allocated in accordance with EN 10027-2:2015.
5.2.2 The steel name of non-alloy steel grades is designated by:
— the capital letter P for pressure purposes;
— the indication of the specified minimum yield strength at room temperature for wall thickness less
than or equal to 16 mm, expressed in MPa (see Table 4);
— the symbols GH for elevated temperature.
5.2.3 The steel name of alloy steel grades is designated by the chemical composition (see Table 2) and
the symbols for the heat treatment, where specified in column 3 and footnote c of Table 1.
7
---------------------- Page: 9 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
6 Information to be supplied by the purchaser
6.1 Mandatory information
The following information shall be supplied by the purchaser at the time of enquiry and order:
a) the quantity (mass or total length or number);
b) the term "tube";
c) the dimensions (outside diameter D and wall thickness T or a set of dimensions covered by Option
11) (see Table 6);
d) the designation of the steel grade in accordance with this Part of EN 10216 (see 5.2);
e) the test category (TC) for non-alloy steel (see 9.3).
6.2 Options
A number of options are specified in this Part of EN 10216 and these are listed below. In the event that
the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order,
the tubes shall be supplied in accordance with the basic specification (see 6.1).
1) Cold finishing (see 7.2.2);
2) restriction on copper and tin content (see Table 2);
3) product analysis (see 8.2.2);
4) verification of impact energy (see Table 4);
5) verification of longitudinal impact energy at -10° C for non-alloy steel grades (see Table 4);
6) verification of elevated temperature properties (see 8.3.2);
7) selection test method for verification of leak-tightness (see 8.4.2.1);
8) Non-Destructive Testing for test category 2 tubes for detection of transverse imperfections (see
8.4.2.2);
9) Non-Destructive Testing for test category 2 tubes for detection of laminar imperfections (see 8.4.2.2);
10) special ends preparation (see 8.6);
11) set of dimensions other than D and T (see 8.7.1);
12) exact lengths (see 8.7.3);
13) the type of inspection certificate 3.2 other than the standard document (see 9.2.1);
14) test pressure for hydrostatic leak-tightness test (see 11.8.1);
15) wall thickness measurement away from the ends (see 11.9);
16) Non-Destructive Testing method (see 11.11.1);
17) additional marking (see 12.2);
18) protection (see Clause 13).
8
---------------------- Page: 10 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
6.3 Examples of an order
6.3.1 Example 1
100 t of seamless tube with an outside diameter of 168,3 mm, a wall thickness of 4,5 mm, in accordance
with EN 10216-2, made of steel grade P265GH, to test category 1 with a 3.2 inspection certificate in
accordance with EN 10204:2004:
EXAMPLE 100 t - Tube - 168,3 x 4,5 - EN 10216-2 - P265GH - TC1 - Option 13: 3.2
6.3.2 Example 2
100 m of seamless tube with a minimum inside diameter of 240 mm, a minimum wall thickness of 40 mm
in accordance with EN 10216-2, made of steel grade 10CrMo9-10, with a 3.2 inspection certificate in
accordance with EN 10204:2004:
EXAMPLE 100 m - Tube - dmin 240 x Tmin 40 - EN 10216-2 - 10CrMo9-10 - Option 13: 3.2
7 Manufacturing process
7.1 Steel making process
The steelmaking process is at the discretion of the manufacturer with the exception that the open hearth
(Siemens-Martin) process shall not be employed unless in combination with a secondary steelmaking or
ladle refining process.
Steels shall be fully killed.
NOTE This excludes the use of rimming, balanced or semi-killed steel.
7.2 Tube manufacture and delivery conditions
7.2.1 All NDT activities shall be carried out by qualified and competent level 1,2 and/or 3 personnel
authorized to operate by the employer.
The qualification shall be in accordance with ISO 11484:2019 or, at least, an equivalent to it.
It is recommended that the level 3 personnel be certified in accordance with EN ISO 9712 or, at least, an
equivalent to it.
The operating authorization issued by the employer shall be in accordance with a written procedure.
NDT operations shall be authorized by level 3 NDT individual approved by the employer.
NOTE The definition of level 1, 2 and 3 can be found in appropriate standards, e.g. EN ISO 9712 and
ISO 11484:2019.
7.2.2 The tubes shall be manufactured by a seamless process.
Unless option 1 is specified, the tubes may be either hot or cold finished at the discretion of the
manufacturer. The terms “hot finished” and “cold finished” apply to the condition of the tube before it is
heat treated in accordance with 7.2.3.
Option 1: The tubes shall be cold finished before heat treatment.
7.2.3 The tubes shall be supplied in the relevant heat treatment conditions as specified in Table 1.
9
---------------------- Page: 11 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
Table 1 — Heat treatment conditions
Steel grade Austenitizing Tempering
Heat
Temperature Temperature
Cooling Cooling
a
treatment
Steel name Steel number
Medium medium
°C °C
b
P195GH 1.0348 +N 880 to 940 air - -
b
P235GH 1.0345 +N 880 to 940 air - -
b
P265GH 1.0425 +N 880 to 940 air - -
b
20MnNb6 1.0471 +N 900 to 960 air - -
b
16Mo3 1.5415 +N 890 to 950 air - -
b
8MoB5-4 1.5450 +N 920 to 960 air - -
b c
14MoV6-3 1.7715 +NT 930 to 990 air 680 to730 air
b c
10CrMo5-5 1.7338 +NT 900 to 960 air 650 to 750 air
b c
13CrMo4-5 1.7335 +NT 900 to 960 air 660 to 730 air
b c
10CrMo9-10 1.7380 +NT 900 to 960 air 680 to 750 air
11CrMo9-10 1.7383 +QT 900 to 960 air or liquid 680 to 750 air
25CrMo4 1.7218 +QT 860 to 900 air or liquid 620 to 680 air
20CrMoV13-5-5 1.7779 +QT 980 to 1030 air or liquid 680 to 730 air
c
15NiCuMoNb5-6-4 1.6368 +NT 880 to 980 air 580 to 680 air
d
7CrWVMoNb9-6 1.8201 +NT 1 040 to 1 080 air 730 to 780 air
d
7CrMoVTiB10-10 1.7378 +NT 980 to 1 020 air 730 to 770 air
furnace
X11CrMo5+I 1.7362+I +I 890 to 950 - -
atmosphere
X11CrMo5+NT1 1.7362+NT1 +NT1 930 to 980 air 730 to 770 air
c
X11CrMo5+NT2 1.7362+NT2 +NT2 930 to 980 air 710 to 750 air
furnace
X11CrMo9-1+I 1.7386+I +I 950 to 980 - -
atmosphere
c
X11CrMo9-1+NT 1.7386+NT +NT 890 to 950 air 720 to 800 air
c
X10CrMoVNb9-1 1.4903 +NT 1 040 to 1 090 air 730 to 780 air
c
X10CrWMoVNb9-2 1.4901 +NT 1 040 to 1 090 air 730 to 780 air
c
X11CrMoWVNb9-1-1 1.4905 +NT 1 040 to 1 080 air 740 to 780 air
c
X20CrMoV11-1 1.4922 +NT 1 020 to 1 080 air 730 to 780 air
c
X10CrSiCuMoNi9-2-1 1.7392 +NT 910 to 950 air 730 to 770 air
c
X12CrCoWVNb12-2-2 1.4915 +NT 1 040 to 1 080 air 760 to 800 air
c
X13CrCoWMoVNbBN11-2-2 1.4965 +NT 1 070 to 1 170 air 760 to 800 air
c
X10CrMoVNb11 1.4927 +NT 1 060 to 1 100 air 750 to 790 air
a
+N = Normalizing, +NT = Normalizing + Tempering, +QT = Quenching + Tempering (air or liquid), +I = Isothermal Annealing.
b
Normalizing includes Normalizing Forming. Normalized Forming shall be carried out in a temperature range from 880 °C to
1 000 °C.
c
For these steel grades it may be necessary in the case of wall thickness T above 10 mm or T/D > 0,15 to apply quenching and
tempering in order to achieve the intended structure and material properties. The decision shall be left to the discretion of the
manufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated in such a way shall be
designated by the steel name supplemented by the symbol “+QT “.
d
For these steel grades it may be necessary in case of wall thickness T above 16 mm or T/D > 0,15 to apply quenching and
tempering in order to achieve the intended structure and material properties. The decision shall be left to the discretion of the
manufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated in such a way shall be
designated by the steel name supplemented by the symbol “+QT”.
10
---------------------- Page: 12 ----------------------
oSIST prEN 10216-2:2023
prEN 10216-2:2023 (E)
8 Requirements
8.1 General
When supplied in a delivery condition indicated in 7.2 and inspected in accordance with Clauses 9, 10
and 11, the tubes shall conform to the requirements of this Part of EN 10216.
In addition, the general technical delivery requirements specified in EN 10021:2006 shall apply.
Tubes shall be suitable for hot and cold bending provided the bending is carried out in an appropriate
manner.
When tubes are specified in the order by d, d or T the following formulae, with all terms in mm, shall
min min
apply for the calculation of outside diameter D , inside diameter d and wall thickness T , instead of D, d
c c c
and T for the relevant requirements in 8.4.1.4, 10.2.2.2, 11.3, 11.8
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.