SIST EN ISO 21028-2:2018
(Main)Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 2: Temperatures between -80 degrees C and -20 degrees C (ISO 21028-2:2018)
Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 2: Temperatures between -80 degrees C and -20 degrees C (ISO 21028-2:2018)
ISO 21028-2:2018 specifies the toughness requirements of metallic materials for use at temperatures between −20 °C and −80 °C to ensure their suitability for cryogenic vessels. This document is applicable to fine-grain and low-alloyed steels with specified yield strength ≤460 N/mm2, aluminium and aluminium alloys, copper and copper alloys and austenitic stainless steels.
NOTE For steel materials listed in EN 13445‑2 or EN 13480‑2 or for steel materials and weldings complying with the same fundamental safety requirements, the requirements for prevention of brittle fracture at low temperatures according to EN 13445‑2:2014, Annex B, method 2, or EN 13480‑2:2012, Annex B, method 2 can be applied.
Kryo-Behälter - Zähigkeitsanforderungen an Werkstoffe bei kryogenen Temperaturen - Teil 2: Temperaturen zwischen -80 °C und -20 °C (ISO 21028-2.2:2018)
Dieser Teil der ISO 21028 legt die Anforderungen an die Zähigkeit von metallischen Werkstoffen für die Verwendung bei Temperaturen zwischen − 20 °C und − 80 °C fest, um deren Eignung für den Einsatz für Kryo-Behälter sicherzustellen. Diese Norm gilt für Feinkornstähle und niedrig legierte Stähle mit einer festgelegten Streckgrenze ≤ 460 N/mm2, Aluminium und Aluminiumlegierungen, Kupfer und Kupferlegierungen sowie austenitische nichtrostende Stähle.
Récipients cryogéniques - Exigences de ténacité pour les matériaux à température cryogénique - Partie 2: Températures comprises entre -80 degrés C et -20 degrés C (ISO 21028-2:2018)
L'ISO 21028-2:2018 spécifie les exigences de ténacité des matériaux métalliques utilisables à une température comprise entre −20 °C et −80 °C pour assurer leur aptitude à l'emploi pour les récipients cryogéniques. Il est applicable aux aciers à grains fins et aux aciers faiblement alliés avec une limite d'élasticité spécifiée ≤ 460 N/mm2, à l'aluminium et aux alliages d'aluminium, au cuivre et aux alliages de cuivre et aux aciers austénitiques inoxydables.
NOTE Pour les matériaux en acier répertoriés dans l'EN 13445‑2 ou l'EN 13480‑2 ou pour les matériaux en acier et les soudures conformes aux mêmes exigences fondamentales de sécurité, les exigences relatives à la prévention de la rupture fragile à basse température, conformément à l'EN 13445‑2:2014, Annexe B, méthode 2, ou à l'EN 13480‑2:2012, Annexe B, méthode 2 peuvent être appliquées.
Kriogene posode - Zahteve za žilavost materialov pri kriogenih temperaturah - 2. del: Temperature med –80 °C in –20 °C (ISO 21028-2:2018)
Ta evropski standard določa zahteve za žilavost kovinskih materialov, ki se uporabljajo pri temperaturah od –80 do –20 °C za zagotovitev njihove ustreznosti pri uporabi za kriogene posode. Ta standard zajema drobnozrnata in nizko legirana jekla s specifično natezno trdnostjo <= 460 N/mm², aluminij in aluminijeve zlitine, baker in bakrove zlitine ter avstenitna nerjavna jekla.
General Information
Relations
Overview
EN ISO 21028-2:2018 - "Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 2: Temperatures between −80 °C and −20 °C" - defines toughness requirements for metallic materials intended for cryogenic vessels and related pressure equipment operating in the −20 °C to −80 °C range. The standard ensures materials and welds have adequate fracture toughness at low temperatures and supports conformity with the EU Pressure Equipment Directive (2014/68/EU).
Key topics and technical requirements
- Scope and materials: Applies to fine-grain and low-alloy steels (specified yield strength ≤ 460 N/mm²), aluminium and aluminium alloys, copper and copper alloys, and austenitic stainless steels.
- Design reference temperature (TR): TR is calculated as the minimum metal temperature (TM) plus a temperature adjustment term (TS) to account for pressure-induced stresses (TR = TM + TS). TR determines the required impact test temperature.
- Impact testing: Specifies use of Charpy V-notch impact tests (referenced ISO 148) and guidance on test specimen selection, including sub-sized specimens and cases where full-size specimens cannot be extracted.
- Welds: Contains provisions for toughness assessment of welds and related testing requirements.
- Normative references: Includes ISO 148 (Charpy tests) and ISO 9016 (weld impact test specimen location and notch orientation).
- Annexes: Informative Annex A gives technical justification for the temperature adjustment term; Annex B provides an example calculation of the lowest authorized operating temperature.
- Updates: This edition supersedes EN 1252-2:2001 and is the second ISO edition (revising the 2004 edition).
Practical applications and users
EN ISO 21028-2:2018 is used to:
- Select and qualify base materials and weld procedures for cryogenic vessels, storage tanks, and piping operating between −20 °C and −80 °C.
- Define acceptance criteria for Charpy V-notch impact testing for manufacturers, material suppliers, and testing laboratories.
- Provide design input for pressure-vessel and cryogenic equipment engineers, inspectors, welding engineers, and certification bodies seeking compliance with the Pressure Equipment Directive (PED).
- Support risk assessment for brittle fracture and inform material specification in industries such as LNG, cryogenic storage, industrial gas production, and hydrogen technologies.
Related standards
- EN ISO 21028 series (other parts for different temperature ranges)
- ISO 148 (Charpy pendulum impact test)
- ISO 9016 (weld impact testing)
- EN 13445-2 and EN 13480-2 (alternative brittle fracture prevention methods applicable for certain steels)
EN ISO 21028-2:2018 is essential for ensuring material toughness and safe operation of cryogenic pressure equipment in the −80 °C to −20 °C range.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2018
1DGRPHãþD
SIST EN 1252-2:2002
Kriogene posode - Zahteve za žilavost materialov pri kriogenih temperaturah - 2.
del: Temperature med –80 °C in –20 °C (ISO 21028-2:2018)
Cryogenic vessels - Toughness requirements for materials at cryogenic temperature -
Part 2: Temperatures between -80 degrees C and -20 degrees C (ISO 21028-2:2018)
Kryo-Behälter - Zähigkeitsanforderungen an Werkstoffe bei kryogenen Temperaturen -
Teil 2: Temperaturen zwischen -80 °C und -20 °C (ISO 21028-2.2:2018)
Récipients cryogéniques - Exigences de ténacité pour les matériaux à température
cryogénique - Partie 2: Températures comprises entre -80 degrés C et -20 degrés C
(ISO 21028-2:2018)
Ta slovenski standard je istoveten z: EN ISO 21028-2:2018
ICS:
23.020.40 Proti mrazu odporne posode Cryogenic vessels
(kriogenske posode)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21028-2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2018
EUROPÄISCHE NORM
ICS 23.020.40 Supersedes EN 1252-2:2001
English Version
Cryogenic vessels - Toughness requirements for materials
at cryogenic temperature - Part 2: Temperatures between
-80 degrees C and -20 degrees C (ISO 21028-2:2018)
Récipients cryogéniques - Exigences de ténacité pour Kryo-Behälter - Zähigkeitsanforderungen an
les matériaux à température cryogénique - Partie 2: Werkstoffe bei kryogenen Temperaturen - Teil 2:
Températures comprises entre -80 degrés C et -20 Temperaturen zwischen -80 °C und -20 °C (ISO 21028-
degrés C (ISO 21028-2:2018) 2.2:2018)
This European Standard was approved by CEN on 12 January 2018.
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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21028-2:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of Directive 2014/68/EU of the European Parliament and of the
Council of 15 May 2014 on the harmonization of the laws of the Member States
relating to the making available on the market of pressure equipment . 4
European foreword
This document (EN ISO 21028-2:2018) has been prepared by Technical Committee ISO/TC 220
"Cryogenic vessels" in collaboration with Technical Committee CEN/TC 268 “Cryogenic vessels and
specific hydrogen technologies applications”, 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 October 2018, and conflicting national standards shall
be withdrawn at the latest by October 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1252-2:2001.
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 EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
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.
Endorsement notice
The text of ISO 21028-2:2018 has been approved by CEN as EN ISO 21028-2:2018 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of Directive 2014/68/EU of the European Parliament and of
the Council of 15 May 2014 on the harmonization of the laws of the Member
States relating to the making available on the market of pressure
equipment
This European Standard has been prepared under a Commission’s standardization request, M/071
Pressure Equipment, to provide one voluntary means of conforming to Essential Requirements of the
New Approach Directive 2014/68/EU “Pressure Equipment Directive” of the European Parliament and
of the Council of 15 May 2014.
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 that
Directive, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Directive 2014/68/EU of
the European Parliament and of the Council of 15 May 2014
Essential Requirements of Clause(s)/sub-clause(s) of this
Remarks/Notes
Directive 2014/68/EU EN
Annex I § 2.2.3 b) All clauses Impact strength
Annex I § 7.5 All clauses Material characteristics
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.
INTERNATIONAL ISO
STANDARD 21028-2
Second edition
2018-03
Cryogenic vessels — Toughness
requirements for materials at
cryogenic temperature —
Part 2:
Temperatures between -80 degrees C
and -20 degrees C
Récipients cryogéniques — Exigences de ténacité pour les matériaux
à température cryogénique —
Partie 2: Températures comprises entre -80 degrés C et -20 degrés C
Reference number
ISO 21028-2:2018(E)
©
ISO 2018
ISO 21028-2:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 21028-2:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Requirements for steels with specified yield strength ≤460 N/mm .3
5.1 General . 3
5.2 Temperature adjustments . 4
5.3 Procedure for base material <10 mm thick . . 4
6 General test requirements . 5
6.1 General . 5
6.2 Sub-sized specimens . 5
6.3 Sub-sized specimens for components from which it is impossible to extract
specimens of section size equal to reference thickness . 5
7 Welds .6
8 Requirements for aluminium and aluminium alloys, copper and copper alloys and
austenitic stainless steels .6
Annex A (informative) Case proposal — Technical justification for temperature
adjustment term .19
Annex B (informative) Example of calculation of the lowest temperature authorized
during operation .22
Bibliography .23
ISO 21028-2:2018(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/ iso/ foreword.
This document was prepared by Technical Committee ISO/TC 220, Cryogenic vessels.
This second edition cancels and replaces the first edition (ISO 21028-2:2004), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— tables and figures on impact test temperatures and design reference have been modified;
— Annex B has been added to present an example of calculation of the lowest temperature authorized
during operation.
A list of all parts in the ISO 21028 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
ISO 21028-2:2018(E)
Introduction
The use of materials at low temperatures entails special problems which should be addressed.
Consideration should be given, in particular, to changes in mechanical characteristics, expansion and
contraction phenomena and the thermal conduction of the various materials. The most important
property to be considered is the material toughness at low temperature.
INTERNATIONAL STANDARD ISO 21028-2:2018(E)
Cryogenic vessels — Toughness requirements for materials
at cryogenic temperature —
Part 2:
Temperatures between -80 degrees C and -20 degrees C
1 Scope
This document specifies the toughness requirements of metallic materials for use at temperatures
between −20 °C and −80 °C to ensure their suitability for cryogenic vessels. This document is applicable
to fine-grain and low-alloyed steels with specified yield strength ≤460 N/mm , aluminium and
aluminium alloys, copper and copper alloys and austenitic stainless steels.
NOTE For steel materials listed in EN 13445-2 or EN 13480-2 or for steel materials and weldings complying
with the same fundamental safety requirements, the requirements for prevention of brittle fracture at low
temperatures according to EN 13445-2:2014, Annex B, method 2, or EN 13480-2:2012, Annex B, method 2 can be
applied.
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.
ISO 148 (all parts), Metallic materials — Charpy pendulum impact test
ISO 9016, Destructive tests on welds in metallic materials — Impact tests — Test specimen location, notch
orientation and examination
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1
minimum metal temperature
T
M
lowest temperature defined for each of the conditions:
— temperature during normal operation;
— temperature during start-up and shut down procedures;
— temperature which may occur during possible process upsets;
— temperature which may occur during pressure or leak testing;
— ambient conditions.
ISO 21028-2:2018(E)
Note 1 to entry: See also temperature adjustment term (3.2) and design reference temperature (3.3).
3.2
temperature adjustment term
T
S
term relevant to the calculation of the design reference temperature, T (3.3) and dependent on the
R
pressure-induced principal membrane stress at the appropriate minimum metal temperature
3.3
design reference temperature
T
R
temperature used for determining the impact energy requirements themselves, determined by adding
the temperature adjustment term, T (3.2) to the minimum metal temperature, T (3.1):
S M
TT=+T
RM S
Note 1 to entry: All applicable combinations of the temperatures T and T are to be considered and the lowest
M S
possible T value used for the determination of the required material impact test temperature (3.4).
R
3.4
impact test temperature
T
KV
temperature at which the required impact energy has to be achieved
Note 1 to entry: See Clause 5.
3.5
impact energy
KV
energy determined from Charpy V-notch tests
Note 1 to entry: These tests are performed in accordance with ISO 148 (all parts).
3.6
reference thickness
e
B
thickness of a component used to relate the design reference temperature, T (3.3) of the component
R
with its required impact test temperature, T (3.4)
KV
Note 1 to entry: The reference thickness is based on the nominal thickness (including corrosion allowance) and
can be as defined in Table 6. For butt-welded components, it is the nominal wall thickness of the component at the
edge of the weld preparation.
Note 2 to entry: See Figures 1 to 5.
4 Symbols
Symbol Definition Unit
A-W as-welded
a depth of the defect mm
e wall thickness mm
e reference thickness mm
B
KV impact energy J
2 © ISO 2018 – All rights reserved
ISO 21028-2:2018(E)
K stress intensity factor J
C
K critical stress intensity J
IC
K constant 25 MPa√m
PWHT post-welded heat-treatment
R yield point N/mm or J
el
R proof stress N/mm or J
p
SMYS specified minimum yield strength N/mm
t component thickness mm
T impact test temperature °C
KV
T minimum metal temperature °C
M
T design reference temperature °C
R
T temperature adjustment term °C
S
β constant 1/60
σ stress coefficient
π coefficient
ΔT correction term °C
e
5 Requirements for steels with specified yield strength ≤460 N/mm
5.1 General
This method, based on fracture mechanics, may be used to determine the requirements to avoid brittle
fracture in C, CMn, fine-grain and low-alloy steels with a SMYS ≤460 N/mm .
In this procedure, the impact test temperature, T , is not equal to the design reference temperature, T .
KV R
Parent material, welds and heat-affected zones shall meet the impact energy (KV) and impact test
temperature, T , requirements given in Table 1 for design refe
...
Frequently Asked Questions
SIST EN ISO 21028-2:2018 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 2: Temperatures between -80 degrees C and -20 degrees C (ISO 21028-2:2018)". This standard covers: ISO 21028-2:2018 specifies the toughness requirements of metallic materials for use at temperatures between −20 °C and −80 °C to ensure their suitability for cryogenic vessels. This document is applicable to fine-grain and low-alloyed steels with specified yield strength ≤460 N/mm2, aluminium and aluminium alloys, copper and copper alloys and austenitic stainless steels. NOTE For steel materials listed in EN 13445‑2 or EN 13480‑2 or for steel materials and weldings complying with the same fundamental safety requirements, the requirements for prevention of brittle fracture at low temperatures according to EN 13445‑2:2014, Annex B, method 2, or EN 13480‑2:2012, Annex B, method 2 can be applied.
ISO 21028-2:2018 specifies the toughness requirements of metallic materials for use at temperatures between −20 °C and −80 °C to ensure their suitability for cryogenic vessels. This document is applicable to fine-grain and low-alloyed steels with specified yield strength ≤460 N/mm2, aluminium and aluminium alloys, copper and copper alloys and austenitic stainless steels. NOTE For steel materials listed in EN 13445‑2 or EN 13480‑2 or for steel materials and weldings complying with the same fundamental safety requirements, the requirements for prevention of brittle fracture at low temperatures according to EN 13445‑2:2014, Annex B, method 2, or EN 13480‑2:2012, Annex B, method 2 can be applied.
SIST EN ISO 21028-2:2018 is classified under the following ICS (International Classification for Standards) categories: 23.020.40 - Cryogenic vessels. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 21028-2:2018 has the following relationships with other standards: It is inter standard links to SIST EN 1252-2:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 21028-2:2018 is associated with the following European legislation: EU Directives/Regulations: 2008/68/EC, 2014/68/EU, 96/86/EC; Standardization Mandates: M/071, M/086. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN ISO 21028-2:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
記事タイトル: SIST EN ISO 21028-2:2018 - 低温容器 - 低温下での材料の耐久性要件 - 第2部: -80℃から-20℃の温度範囲（ISO 21028-2:2018） 記事内容: このヨーロッパ標準は、-80℃から-20℃の温度範囲で使用される低温容器のための金属材料の耐久性要件を規定しています。この規格は、指定引張強度が460 N/mm²以下の微細粒子と低合金鋼、アルミニウムおよびアルミニウム合金、銅および銅合金、オーステナイト系ステンレス鋼に適用されます。
記事のタイトル：SIST EN ISO 21028-2:2018 - 低温容器 - 低温下での材料の耐久性要件 - 第2部：-80℃から-20℃までの温度（ISO 21028-2:2018） 記事内容：このヨーロッパ標準では、-80℃から-20℃の温度で使用される金属材料の耐久性要件を規定し、低温容器の使用に適していることを保証します。この標準は、指定された降伏強度が460 N/mm²以下の細粒および低合金鋼、アルミニウムおよびアルミニウム合金、銅および銅合金、オーステナイト系ステンレス鋼を対象としています。
기사 제목: SIST EN ISO 21028-2:2018 - 저온 용기 - 저온 온도에서의 재료 강도 요구 사항 - 제 2 부: -80°C에서 -20°C 사이의 온도 (ISO 21028-2:2018) 기사 내용: 이 유럽 표준은 -80°C에서 -20°C 사이의 온도에서 사용되는 금속 재료의 강도 요구 사항을 규정하며, 저온 용기에 사용하기에 적합성을 보장합니다. 이 표준은 지정된 항복강도가 460 N/mm² 이하인 미립자와 저합금강, 알루미늄 및 알루미늄 합금, 구리 및 구리 합금, 오스테나이트계 스테인레스강을 다룹니다.
The article discusses the European Standard SIST EN ISO 21028-2:2018, which specifies the toughness requirements for metallic materials used in cryogenic vessels. Specifically, it focuses on materials used at temperatures between -80°C and -20°C. The standard covers fine grain and low alloyed steels with a specified yield strength of up to 460 N/mm², as well as aluminium and aluminium alloys, copper and copper alloys, and austenitic stainless steels. Its purpose is to ensure that these materials are suitable for use in cryogenic vessels.
제목: SIST EN ISO 21028-2:2018 - 저온 용기 - 저온 온도에서의 재료 강성 요구 사항 - 제2부: -80도 C에서 -20도 C 사이의 온도 (ISO 21028-2:2018) 내용: 이 유럽 표준은 -80도 C와 -20도 C 사이의 온도에서 저온 용기에 사용하기 위한 금속 재료의 강성 요구 사항을 명시한다. 이 표준은 지정된 항복강도가 <= 460 N/mm²인 미립자 및 저합금 강철, 알루미늄 및 알루미늄 합금, 구리 및 구리 합금, 오스테나이트 스테인레스 스틸에 적용된다.
The article discusses a European standard, SIST EN ISO 21028-2:2018, which specifies the toughness requirements for metallic materials used in cryogenic vessels at temperatures between -80 °C and -20 °C. This standard applies to fine grain and low alloyed steels with specified yield strength less than or equal to 460 N/mm², aluminium and aluminium alloys, copper and copper alloys, and austenitic stainless steels.
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