kSIST-TS FprCEN/TS 18173:2025
(Main)Hydrogen applications - Material compatibility evaluation and qualification - Equipment used in commercial, industrial installations including gas burners, gas burning appliances and fuel gas infrastructures
Hydrogen applications - Material compatibility evaluation and qualification - Equipment used in commercial, industrial installations including gas burners, gas burning appliances and fuel gas infrastructures
This document provides guidance to relevant product standards, for compatibility assessment and qualification of materials for equipment used in commercial, industrial installations including gas burners, gas burning appliances and fuel gas infrastructures1 that are:
- fed by admixture of natural gas and hydrogen (blending) or pure hydrogen;
- operated at pressure greater than 10 bar (1 MPa) and up to 100 bar (10 MPa);
- operated within a temperature range of −20° C to +60 °C;
NOTE 1 Temperature range outside of −20° to +60°C can be considered after risk assessment by the manufacturer, in compliance with relevant product standard and the requirements specified in this document.
Except for critical equipment, where hydrogen requirements and material compatibility are defined by relevant specific, national and international product standard, according to CEN/TR 17924 and CEN/TR 17797, no specific requirements are necessary, as detailed in this document (see also Figure 1), under the following conditions:
- for a homogeneous mixture of natural gas and hydrogen with a hydrogen content not exceeding 10 % by volume, at operating pressures up to 100 bar (10 MPa); or
- for operating pressures up to 10 bar (1 MPa) with a hydrogen content up to 100 % by volume.
- Equipment is classified as critical when it’s subjected to fatigue or specific mechanical stress due to specific operating conditions and applications (i.e. compression and pumping station, specific industrial installations, fuel tanks for vehicles, ...).
H2-Readiness von Gas-Infrastrukturen– Anforderungen und Prüfverfahren für die Materialeignung von Ausrüstung
Dieses Dokument enthält eine Anleitung zu relevanten Produktnormen, für die Beurteilung der Kompatibilität und der Qualifikation von Materialien für Ausrüstung zur Anwendung in gewerblichen und industriellen Anlagen einschließlich Gasbrennern, Gasverbrennungsanlagen und Brenngasinfrastrukturen, die:
- mit einer Mischung aus Erdgas und Wasserstoff (Mischung) oder reinem Wasserstoff gespeist werden;
- mit einem Druck von mehr als 10bar (1MPa) und bis zu 100bar (10Mpa) betrieben werden;
- innerhalb eines Temperaturbereichs von −20°C bis +60°C betrieben werden;
ANMERKUNG Temperaturbereiche außerhalb von −20°C bis +60°C können nach einer Risikobeurteilung durch den Hersteller entsprechend der relevanten Produktnorm und den in diesem Dokument festgelegten Anforderungen berücksichtigt werden.
Mit Ausnahme von kritischer Ausrüstung, wo Anforderungen an Wasserstoff und die Material-Kompatibilität durch relevante nationale und internationale Produktnormen nach CEN/TR17924 und CEN/TR17797 definiert sind, sind keine besonderen Anforderungen erforderlich, wie in diesem Dokument beschrieben (siehe auch Bild1) unter den folgenden Bedingungen:
- für eine homogene Mischung aus Erdgas und Wasserstoff mit einem Wasserstoffgehalt von nicht mehr als 10% nach Volumen, ein Betriebsdruck von bis zu 100bar (10Mpa) oder
- für Betriebsdrücke bis zu 10bar (1Mpa) mit einem Wasserstoffgehalt von bis zu 100% nach Volumen.
- Ausrüstung wird als kritisch klassifiziert, wenn sie Ermüdung oder spezifischer mechanischer Beanspru
chung durch bestimmte Betriebsbedingungen und Anwendungen ausgesetzt ist (d.h. Druck- und Pumpstationen, spezifische industrielle Anlagen, Kraftstofftanks für Fahrzeuge usw.).
Uporaba vodika - Vrednotenje in kvalifikacija združljivosti materialov - Oprema, ki se uporablja v komercialnih in industrijskih napeljavah, vključno s plinskimi gorilniki, plinskimi napravami in infrastrukturo za plin kot gorivo
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2025
Uporaba vodika - Vrednotenje in kvalifikacija združljivosti materialov - Oprema, ki
se uporablja v komercialnih in industrijskih napeljavah, vključno s plinskimi
gorilniki, plinskimi napravami in infrastrukturo za plin kot gorivo
Hydrogen applications - Material compatibility evaluation and qualification - Equipment
used in commercial, industrial installations including gas burners, gas burning appliances
and fuel gas infrastructures
H2-Readiness von Gas-Infrastrukturen– Anforderungen und Prüfverfahren für die
Materialeignung von Ausrüstung
Ta slovenski standard je istoveten z: FprCEN/TS 18173
ICS:
27.075 Tehnologija vodika Hydrogen technologies
75.180.01 Oprema za industrijo nafte in Equipment for petroleum and
zemeljskega plina na splošno natural gas industries in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
FINAL DRAFT
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
April 2025
ICS 27.075; 75.180.01
English Version
Hydrogen applications - Material compatibility evaluation
and qualification - Equipment used in commercial,
industrial installations including gas burners, gas burning
appliances and fuel gas infrastructures
This draft Technical Specification is submitted to CEN members for Vote. It has been drawn up by the Technical Committee
CEN/TC 235.
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 Technical Specification. It is distributed for review and comments. It is subject to change
without notice and shall not be referred to as a Technical Specification.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN/TS 18173:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 8
3 Terms and definitions . 8
4 General Requirements . 8
5 Metallic materials . 9
5.1 General consideration . 9
5.2 Metalworking critical processes . 9
5.2.1 General. 9
5.2.2 Hot working . 9
5.2.3 Cold working . 10
5.3 Types . 10
5.3.1 Carbon steels . 10
5.3.2 Stainless steels . 10
5.3.3 Aluminium alloys . 11
5.3.4 Copper alloys . 11
5.3.5 Zinc alloys . 11
5.3.6 Nickel alloys . 11
5.3.7 Spheroidal graphite cast iron . 11
5.4 Specific applications . 11
5.4.1 Springs . 11
5.4.2 Nut and bolting . 12
6 Non-metallic materials . 12
6.1 General. 12
6.2 Elastomeric materials . 12
6.2.1 General requirements . 12
6.2.2 Specific requirements for diaphragm . 12
6.3 Non-metallic materials other than elastomers . 12
6.2.1 General. 12
6.2.2 Lubricants and adhesives . 13
7 Tests . 13
7.1 Metallic materials qualification . 13
7.1.1 Specimen . 13
7.1.2 Tests . 13
7.1.3 Testing Conditions (medium, pressure and temperature) . 14
7.1.4 Test tolerances . 15
7.1.5 Test Procedure . 15
7.1.6 Acceptance criteria and Material Qualification . 16
7.1.7 Test Report . 17
7.2 Elastomeric materials qualification . 17
7.2.1 General. 17
7.2.2 Specimens . 17
7.2.3 Test medium . 17
7.2.4 Test temperatures . 17
7.2.5 Test procedure . 18
7.2.6 Acceptance criteria . 18
Annex A (normative) Fatigue validation test method . 19
Bibliography . 22
European foreword
This document (FprCEN/TS 18173:2025) has been prepared by Technical Committee CEN/TC 235 “Gas
pressure regulators and associated safety devices for use in gas transmission and distribution”, the
secretariat of which is held by UNI.
This document is currently submitted to the Vote on TS.
Introduction
This document is the first edition and reflects the current situation. This can be taken into account in
further development of the document.
The criteria provided in this document for the qualification of materials represent the best knowledge
and judgment available at the time of this release, drawing from technical literature and standards related
to materials for hydrogen applications.
1 Scope
This document provides guidance to relevant product standards, for compatibility assessment and
qualification of materials for equipment used in commercial, industrial installations including gas
burners, gas burning appliances and fuel gas infrastructures that are:
— fed by admixture of natural gas and hydrogen (blending) or pure hydrogen;
— operated at pressure greater than 10 bar (1 MPa) and up to 100 bar (10 MPa);
—operated within a temperature range of −20° C to +60 °C;
NOTE 1 Temperature range outside of −20° to +60°C can be considered after risk assessment by the
manufacturer, in compliance with relevant product standard and the requirements specified in this document.
Except for critical equipment, where hydrogen requirements and material compatibility are defined by
relevant specific, national and international product standard, according to CEN/TR 17924 and CEN/TR
17797, no specific requirements are necessary, as detailed in this document (see also Figure 1), under
the following conditions:
— for a homogeneous mixture of natural gas and hydrogen with a hydrogen content not exceeding 10 %
by volume, at operating pressures up to 100 bar (10 MPa); or
— for operating pressures up to 10 bar (1 MPa) with a hydrogen content up to 100 % by volume.
— Equipment is classified as critical when it’s subjected to fatigue or specific mechanical stress due to
specific operating conditions and applications (i.e. compression and pumping station, specific
industrial installations, fuel tanks for vehicles, …).
For information regarding the compatibility of materials used in Gas Appliances, refer to CEN/TR 17924. For gas
infrastructure, see CEN/TR 17797.
Key
H2 hydrogen content, expressed in percentage by volume (vol %)
P operating pressure, expressed in bar (bar)
specific requirements are needed
no specific requirements are needed
Figure 1 — Operating conditions
This document represents minimum requirements and does not restrict the use of better procedures or
materials.
The following items are detailed in this document:
— metallic materials;
— non-metallic materials;
— validation tests.
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 ISO 6892-1, Metallic materials. Tensile testing - Method of test at room temperature(ISO 6892-1)
EN ISO 23936-2:2011, Petroleum, petrochemical and natural gas industries - Non-metallic materials in
contact with media related to oil and gas production - Part 2: Elastomers(ISO 23936-2:2011)
ISO 2782-1, Rubber, vulcanized or thermoplastic – Determination of permeability to gases – Part 1:
Differential-pressure method
ISO 16573-1, Steel - Measurement method for the eva
...
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