Flat products made of steels for pressure purposes – Part 4: Nickel alloy steels with specified low temperature properties
(Supersedes EN 10028-4:2009)
National foreword
This British Standard is the UK implementation of EN 10028-4:2017. It supersedes BS EN 10028-4:2009, which is withdrawn.
The UK participation in its preparation was entrusted to Technical Committee ISE/107, Steels for Pressure Purposes.
A list of organizations represented on this committee can be obtained on request to its secretary.
This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.
© The British Standards Institution 2017 Published by BSI Standards Limited 2017
ISBN 978 0 580 87852 7
ICS 77.140.50; 77.140.30
Compliance with a British Standard cannot confer immunity from legal obligations.
This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2017.
Amendments/corrigenda issued since publication
Date Text affected
EUROPEAN STANDARD EN 10028-4:2017
ICS 77.140.30; 77.140.50
English Version
Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties
Produits plats en aciers pour appareils à pression - Partie 4 : Aciers alliés au nickel avec caractéristiques spécifiées à basse température
Flacherzeugnisse aus Druckbehälterstählen - Teil 4: Nickellegierte Stähle mit festgelegten Eigenschaften bei tiefen Temperaturen
This European Standard was approved by CEN on 7 May 2017.
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, Serbia, 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
Contents
1 Scope 4 2 Normative references 4 3 Terms and definitions 4 4 Tolerances on dimensions 4 5 Calculation of mass 4 6 Classification and designation 4 6.1 Classification 4 6.2 Designation 4 7 Information to be supplied by the purchaser 4 7.1 Mandatory information 4 7.2 Options 5 7.3 Example for ordering 5 8 Requirements 5 8.1 Steelmaking process 5 8.2 Delivery condition 5 8.3 Chemical composition 5 8.4 Mechanical properties 7 8.5 Surface condition 11 8.6 Internal soundness 11 9 Inspection 11 9.1 Types of inspection and inspection documents 11 9.2 Tests to be carried out 11 9.3 Retests, sorting and reprocessing 11 10 Sampling 11 11 Test methods 11 12 Marking 11 13 Handling 11 Annex A (informative) Guidelines for heat treatment 12 Annex B (informative) Changes to the previous version EN 10028-4:2009 13 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered 14
European foreword
This document (EN 10028-4:2017) has been prepared by Technical Committee ECISS/TC 107 "Steels for pressure purposes", the secretariat of which is held by DIN.
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 January 2018 and conflicting national standards shall be withdrawn at the latest by January 2018.
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 10028-4:2009.
This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of Directive 2014/68/EU.
For relationship with Directive 2014/68/EU, see informative Annex ZA, which is an integral part of this document.
A list of changes between this document and the previous version can be found in Annex B.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This European Standard specifies requirements for flat products for pressure equipment made of nickel alloy steels as specified in Table 1.
The requirements and definitions of EN 10028-1:2017 also apply.
NOTE Once this European Standard is published in the EU Official Journal (OEU) under Directive 2014/68/EU, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 2014/68/EU is limited to technical data of materials in this European Standard (Part 1 and the other relevant part of the series) 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 Directive 2014/68/EU are satisfied, needs to be done.
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 10020:2000, Definition and classification of grades of steel
- EN 10028-1:2017, Flat products made of steels for pressure purposes – Part 1: General requirements
- EN 10204:2004, Metallic products – Types of inspection documents
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10028-1:2017 apply.
4 Tolerances on dimensions
See EN 10028-1:2017.
5 Calculation of mass
See EN 10028-1:2017.
6 Classification and designation
6.1 Classification
In accordance with EN 10020:2000 all steel grades covered by this document are alloy special steels.
6.2 Designation
See EN 10028-1:2017.
7 Information to be supplied by the purchaser
7.1 Mandatory information
See EN 10028-1:2017.
7.2 Options
A number of options are specified in this European Standard and listed below. Additionally the relevant options of EN 10028-1:2017 apply. If the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the products shall be supplied in accordance with the basic specification (see EN 10028-1:2017).
- 1) delivery condition other than that specified in Table 3 (see 8.2.2);
- 2) delivery of products in the untreated condition (see 8.2.3);
- 3) specification of a minimum impact energy of 40 J (see 8.4 and Table 4);
- 4) mid‑thickness test pieces for the impact test (see Clause 10);
- 5) verification of impact energy for longitudinal test pieces (see Clause 11).
7.3 Example for ordering
10 plates with nominal dimensions, thickness = 50 mm, width = 2000 mm, length = 10000 mm made of a steel grade with the name 15NiMn6 and the number 1.6228 as specified in EN 10028-4, to be delivered with inspection certificate 3.1 as specified in EN 10204:
10 plates – 50 x 2000 x 10 000 – EN 10028‑4 – 15NiMn6 – Inspection certificate 3.1
or
10 plates – 50 x 2000 x 10 000 – EN 10028‑4 – 1.6228 – Inspection certificate 3.1
8 Requirements
8.1 Steelmaking process
See EN 10028-1:2017.
8.2 Delivery condition
8.2.1 The delivery condition shall be noted in the inspection document.
8.2.2 Unless otherwise agreed at the time of enquiry and order, the products covered by this document shall be supplied in the usual delivery conditions specified in Table 3.
8.2.3 If so agreed at the time of enquiry and order, the products may be supplied in the untreated condition. In these cases, the specified tests shall be carried out on test pieces in the usual delivery condition as given in Table 3.
Annex A contains heat treatment information for the purchaser.
8.3 Chemical composition
8.3.1 The requirements of Table 1 shall apply for the chemical composition according to the cast analysis.
8.3.2 The product analysis shall not deviate from the specified values for the cast analysis as specified in Table 1 by more than the values given in Table 2.
| Steel grade | % by mass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel name | Steel number | C max. |
Si max. |
Mn | P max. |
S max. |
Altotal min. |
Mo max. |
Nb max. |
Ni | V max. |
| 11MnNi5-3 | 1.6212 | 0,14 | 0,50 | 0,70 to 1,50 | 0,025 | 0,010 | 0,020 | - | 0,05 | 0,30 b to 0,80 | 0,05 |
| 13MnNi6-3 | 1.6217 | 0,16 | 0,50 | 0,85 to 1,70 | 0,025 | 0,010 | 0,020 | - | 0,05 | 0,30 b to 0,85 | 0,05 |
| 15NiMn6 | 1.6228 | 0,18 | 0,35 | 0,80 to 1,50 | 0,025 | 0,010 | - | - | - | 1,30 to 1,70 | 0,05 |
| 12Ni14 | 1.5637 | 0,15 | 0,35 | 0,30 to 0,80 | 0,020 | 0,005 | - | - | - | 3,25 to 3,75 | 0,05 |
| X12Ni5 | 1.5680 | 0,15 | 0,35 | 0,30 to 0,80 | 0,020 | 0,005 | - | - | - | 4,75 to 5,25 | 0,05 |
| X8Ni9 | 1.5662 | 0,10 | 0,35 | 0,30 to 0,80 | 0,020 | 0,005 | - | 0,10 | - | 8,5 to 10,0 | 0,05 |
| X7Ni9 | 1.5663 | 0,10 | 0,35 | 0,30 to 0,80 | 0,015 | 0,005 | - | 0,10 | - | 8,5 to 10,0 | 0,01 |
|
a Elements not listed in this Table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate measures shall be taken to prevent the addition from scrap or other materials used in steelmaking of these elements which may adversely affect the mechanical properties and usability. The content of Cr + Cu + Mo shall not exceed 0,50 %.
b For nominal thicknesses ≤ 40 mm, a minimum nickel content of 0,15 % is permitted. |
|||||||||||
| Element | Specified value in the cast analysis according to Table 1 % by mass |
Permissible deviation a of the product analysis % by mass |
|---|---|---|
| C | ≤ 0,18 | + 0,02 |
| Si | ≤ 0,50 | + 0,05 |
| Mn | ≤ 1,00 | ± 0,05 |
| > 1,00 to ≤ 1,70 | ± 0,10 | |
| P | ≤ 0,015 | + 0,003 |
| > 0,015 to ≤ 0,025 | + 0,005 | |
| S | ≤ 0,010 | + 0,003 |
| Al | ≥ 0,020 | – 0,005 |
| Mo | ≤ 0,10 | + 0,03 |
| Nb | ≤ 0,05 | + 0,01 |
| Ni | ≤ 0,85 | ± 0,05 |
| > 0,85 to ≤ 3,75 | ± 0,07 | |
| > 3,75 to ≤ 10,0 | ± 0,10 | |
| V | ≤ 0,05 | + 0,01 |
| a If several product analyses are carried out on one cast, and the contents of an individual element determined lie outside the permission range of the chemical composition specified for the cast analysis, then it is only allowed to exceed the permissible maximum value or fall short of the permissible minimum value, but not both for one cast. | ||
8.4 Mechanical properties
8.4.1 The values given in Tables 3 and 4 (see also EN 10028-1:2017 and Clauses 10 and 11) shall apply.
Optionally, a minimum impact energy value of 40 J may be specified for temperatures where lower minimum values are specified (see Table 4, footnote a).
| Steel grade | Usual delivery condition a b (Heat treatment symbol) |
Nominal thickness t mm |
Yield strength ReH MPa min. |
Tensile strength Rm MPa |
Elongation after fracture A % min. |
|
|---|---|---|---|---|---|---|
| Steel name | Steel number | |||||
| 11MnNi5-3 | 1.6212 | +N (+NT) | ≤ 30 | 285 | 420 to 530 | 24 |
| 30 < t ≤ 50 | 275 | |||||
| 50 < t ≤ 80 | 265 | |||||
| 13MnNi6-3 | 1.6217 | +N (+NT) | ≤ 30 | 355 | 490 to 610 | 22 |
| 30 < t ≤ 50 | 345 | |||||
| 50 < t ≤ 80 | 335 | |||||
| 15NiMn6 | 1.6228 | +N or +NT or +QT |
≤ 30 | 355 | 490 to 640 | 22 |
| 30 < t ≤ 50 | 345 | |||||
| 50 < t ≤ 80 | 335 | |||||
| 12Ni14 | 1.5637 | +N or +NT or +QT |
≤ 30 | 355 | 490 to 640 | 22 |
| 30 < t ≤ 50 | 345 | |||||
| 50 < t ≤ 80 | 335 | |||||
| X12Ni5 | 1.5680 | +N or +NT or +QT |
≤ 30 | 390 | 530 to 710 | 20 |
| 30 < t ≤ 50 | 380 | |||||
| X8Ni9+NT640 a | 1.5662+NT640 a | +N plus +NT | ≤ 30 | 490 | 640 to 840 | 18 |
| 30 < t ≤ 50 | 480 | |||||
| X8Ni9+QT640 a | 1.5662+QT640 a | +QT | ≤ 30 | 490 | ||
| 30 < t ≤ 125 | 480 | |||||
| X8Ni9+QT680 a | 1.5662+QT680 a | +QT c | ≤ 30 | 585 | 680 to 820 | 18 |
| 30 < t ≤ 125 | 575 | |||||
| X7Ni9 | 1.5663 | +QT c | ≤ 30 | 585 | ||
| 30 < t ≤ 125 | 575 | |||||
|
a +N: normalized; +NT: normalized and tempered; +QT: quenched and tempered; +NT640/+QT640/+QT680: Heat treatment variant with minimum tensile strength of 640 MPa or 680 MPa. b For temperatures and cooling conditions, see Table A.1. c For nominal thickness < 15 mm, delivery conditions +N plus +NT are also applicable. |
||||||
| Steel grade | Heat treatment condition a b | Nominal thickness t mm |
Direction | Minimum impact energy KV2 in J at a temperature in °C of |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel name | Steel number | -196 | -170 | -150 | -120 | -100 | -80 | -60 | -50 | -40 | -20 | 0 | 20 | |||
| 11MnNi5-3 | 1.6212 | +N (+NT) | ≤ 80 | longitudinal | – | – | – | – | – | – | 40 | 45 | 50 | 55 | 60 | 70 |
| transverse | – | – | – | – | – | – | 27 d | 30 d | 35 d | 45 | 50 | 50 | ||||
| 13MnNi6-3 | 1.6217 | +N (+NT) | longitudinal | – | – | – | – | – | – | 40 | 45 | 50 | 55 | 60 | 70 | |
| transverse | – | – | – | – | – | – | 27 d | 30 d | 35 d | 45 | 50 | 50 | ||||
| 15NiMn6 | 1.6228 | +N | longitudinal transverse |
– – |
– – |
– – |
– – |
– – |
40 27 d |
50 35 d |
50 35 d |
60 40 |
65 45 |
65 50 |
65 50 |
|
| or +NT | ||||||||||||||||
| or +QT | ||||||||||||||||
| 12Ni14 | 1.5637 | +N | longitudinal transverse |
– – |
– – |
– – |
– – |
40 27 d |
45 30 d |
50 35 d |
50 35 d |
55 35 d |
55 45 |
60 50 |
65 50 |
|
| or +NT | ||||||||||||||||
| or +QT | ||||||||||||||||
| X12Ni5 | 1.5680 | +N | ≤ 50 | longitudinal transverse |
– – |
– – |
– – |
40 c 27 c d |
50 30 d |
60 40 |
65 45 |
65 45 |
65 45 |
70 55 |
70 60 |
70 60 |
| or +NT | ||||||||||||||||
| or +QT | ||||||||||||||||
| X8Ni9+NT640; X8Ni9+QT640 a |
1.5662+NT640; 1.5662+QT640 a |
+N plus +NT | longitudinal | 50 | 60 | 70 | 80 | 90 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| +QT | ≤ 125 | transverse | 40 | 45 | 50 | 50 | 60 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | ||
| X8Ni9+QT680 a | 1.5662+QT680 a | +QT | longitudinal | 70 | 80 | 90 | 100 | 110 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | |
| transverse | 50 | 60 | 70 | 80 | 90 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | ||||
| X7Ni9 | 1.5663 | +QT | longitudinal | 100 | 110 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | |
| transverse | 80 | 90 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | ||||
|
a +N: normalized; +NT: normalized and tempered; +QT: quenched and tempered; +NT640/+QT640/+QT680: Heat treatment variant with minimum tensile strength of 640 MPa or 680 MPa. b For temperatures and cooling conditions, see Table A.1. c The values are applicable for nominal thicknesses ≤ 25 mm at -110 °C and for nominal thicknesses of 25 mm < t ≤ 30 mm at -115 °C. d A minimum impact energy value of 40 J may be agreed at the time of enquiry and order. |
||||||||||||||||
8.5 Surface condition
See EN 10028-1:2017.
8.6 Internal soundness
See EN 10028-1:2017.
9 Inspection
9.1 Types of inspection and inspection documents
See EN 10028-1:2017.
9.2 Tests to be carried out
See EN 10028-1:2017.
9.3 Retests, sorting and reprocessing
See EN 10028-1:2017.
10 Sampling
See EN 10028-1:2017.
For the impact test, deviating from EN 10028-1:2017, Table 4, footnote g, the preparation of test pieces taken from the mid thickness may be agreed at the time of enquiry and order. In this case, test temperatures and minimum impact energy values shall also be agreed.
11 Test methods
See EN 10028-1:2017.
For the impact test, verification of impact energy for longitudinal test pieces may be agreed at the time of enquiry and order in accordance with EN 10028-1:2017, 10.2.2.3 and 11.4.
12 Marking
See EN 10028-1:2017.
NOTE For the grade X8Ni9, the relevant heat treatment variant (+NT640 or +QT640 or +QT680) belongs to the steel name or steel number.
13 Handling
Steel grades X8Ni9 and X7Ni9 are susceptible to magnetization. Use of magnets in handling after heat treatment should be avoided, if residual magnetism would be detrimental to subsequent applications.
| Steel grade | Heat treatment conditiona | Heat treatment | ||||
|---|---|---|---|---|---|---|
| Steel name | Steel number | Austenitizing °C |
Coolingb | Tempering °C |
Coolingb | |
| 11MnNi5-3 | 1.6212 | +N (+NT) | 880 to 940 | a | 580 to 640 | a |
| 13MnNi6-3 | 1.6217 | +N (+NT) | 880 to 940 | a | 580 to 640 | a |
| 15NiMn6 | 1.6228 | +N | 850 to 900 | a | - | - |
| +NT | 850 to 900 | a | 600 to 660 | a or w | ||
| +QT | 850 to 900 | w or o | 600 to 660 | a or w | ||
| 12Ni14 | 1.5637 | +N | 830 to 880 | a | - | - |
| +NT | 830 to 880 | a | 580 to 640 | a or w | ||
| +QT | 820 to 870 | w or o | 580 to 640 | a or w | ||
| X12Ni5 | 1.5680 | +N | 800 to 850 | a | - | - |
| +NT | 800 to 850 | a | 580 to 660 | a or w | ||
| +QT | 800 to 850 | w or o | 580 to 660 | a or w | ||
| X8Ni9+NT640 | 1.5662 +NT640 | +N plus +NT | 880 to 930 + 770 to 830 |
a | 540 to 600 | a or w |
| X8Ni9+QT640 | 1.5662 +QT640 | +QT | 770 to 830 | w or o | 540 to 600 | a or w |
| X8Ni9+QT680 | 1.5662 +QT680 | +QTc | 770 to 830 | w or o | 540 to 600 | a or w |
| X7Ni9 | 1.5663 | +QTc | 770 to 830 | w or o | 540 to 600 | a or w |
|
a +N: normalized; +NT: normalized and tempered; +QT: quenched and tempered; +NT640/+QT640/+QT680: Heat treatment variant with minimum tensile strength of 640 MPa or 680 MPa. b a: air; o: oil; w: water. c See Table 3, footnote c. |
||||||
Annex B (informative) Changes to the previous version EN 10028-4:2009
- the normative references have been revised;
- EN 10020 has been moved from the bibliography to the normative references;
- the marking of text passages with one or two dots has been deleted;
- the note in chapter 8.2.3 concerning delivery condition has been removed;
- a new Clause 13 concerning handling in correlation with magnetization has been inserted in the standard;
- the thickness of X8Ni9+QT640, X8Ni9+QT680 and X7Ni9 extended to 125 mm;
- the correlation in Annex ZA between the clause of this European Standard and the essential requirements of the Directive 2014/68/EU has been updated;
- clarification on various technical requirements.
Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered
This European Standard has been prepared under a Commission's standardization request M/071 to provide one voluntary means of conforming to Essential Requirements of Directive 2014/68/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive, compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of Directive 2014/68/EU, and associated EFTA regulations.
| Requirements of Directive 2014/68/EU | Clause(s)/subclause(s) of this EN | Remarks/Notes |
|---|---|---|
| 4.1a | 8.4, Tables 3 and 4 | Appropriate material properties |
| 4.1d | 8.2 and 8.5 | Suitable for the processing procedures |
| 4.3 | 9.1 | Inspection documentation |
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European Standard is maintained in the list published in the Official Journal of the European Union. Users of this standard should consult frequently the latest list published in the Official Journal of the European Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of this standard.
