SIST EN 10090:1998
(Main)Valve steels and alloys for internal combustion engines
Valve steels and alloys for internal combustion engines
1.1 This European Standard applies to the grades of wrought high-alloy materials listed in table 1. These valve materials are used for intake and exhaust valves in reciprocating internal combustion engines. It is applicable to bars, wire, rod and forgings and for the surface finishes listed in note 3 of 6.3. 1.2 This European Standard does not apply to alloys resistant to wear and corrosion which are used to protect valve seat surfaces.
Ventilstähle und -legierungen für Verbrennungskraftmaschinen
1.1 Diese Europäische Norm gilt für die in Tabelle 1 aufgeführten hochlegierten Werkstoffe. Diese Ventilwerkstoffe werden für Ein- und Auslaßventile von Hubkolben-Verbrennungsmotoren verwendet. Sie gilt für Stäbe, Draht, Walzdraht und Schmiedestücke in den in Anmerkung 3 zu 6.3 aufgeführten Oberflächenausführungen. 1.2 Diese Europäische Norm gilt nicht für verschleiß- und korrosionsbeständige Legierungen, die zum Schutz von Ventilsitzoberflächen verwendet werden.
Aciers et alliages pour soupapes de moteurs a combustion interne
1.1 La présente norme européenne s'applique aux nuances de matériaux corroyés fortement alliés énumérées dans le tableau 1. Ces matériaux sont utilisés pour la fabrication des soupapes d'admission et d'échappement des moteurs alternatifs à combustion interne. Elle est applicable aux barres, fils, fils machine et pièces forgées ainsi qu'à toutes les finitions de surface indiquées dans la note 3 du 6.3. 1.2 La présente norme européenne ne s'applique pas aux alliages résistant à l'usure et à la corrosion utilisés pour protéger la surface des sièges de soupapes.
Ventilska jekla in zlitine za motorje z notranjim zgorevanjem
General Information
Overview
EN 10090:1998 - Valve steels and alloys for internal combustion engines (CEN) specifies requirements for wrought high‑alloy valve steels and alloys intended for use in intake and exhaust valves of reciprocating internal combustion engines. The standard covers material grades listed in table 1 (wrought grades) and applies to product forms such as bars, wire, rod and forgings, and to the surface finishes referenced in note 3 of clause 6.3. It explicitly excludes alloys whose primary purpose is wear or corrosion resistance for protecting valve seat surfaces.
Key topics and technical requirements
- Scope of materials: Defines the range of wrought high‑alloy valve steels and alloys suitable for valve manufacture (see table 1 for grade listings).
- Product forms: Applies to bars, wire, rod and forgings-formats commonly used in valve production.
- Surface finish requirements: References allowed surface finishes (note 3, clause 6.3) relevant for valve performance and manufacturing.
- Intended use: Focused on intake and exhaust valves for reciprocating internal combustion engines; not for seat‑protective wear/corrosion alloys.
- Classification context: Positioned within heat‑treatable steels and materials categories used in engine component specification.
- Quality and conformity: Covers material selection and specification practices needed for consistent valve performance (mechanical and metallurgical consistency implied by the standard’s scope).
(Note: EN 10090:1998 lists grades and technical details in its tables and clauses-refer to the published standard for exact compositions, mechanical properties, testing and verification methods.)
Applications
- Engine manufacturers specifying material for intake and exhaust valves in automotive, motorcycle, marine and stationary reciprocating internal combustion engines.
- Valve manufacturers and forging houses producing valve blanks, stems and heads from bars, wire, rod or forgings.
- Procurement and quality engineers requiring a harmonized European reference for valve steel selection and supplier conformity.
- Design and materials engineers assessing compatibility of valve alloys with engine operating conditions (temperature, fatigue, corrosion environment).
Who should use this standard
- Automotive OEMs and engine builders
- Valve and component suppliers
- Metallurgists and heat‑treatment specialists
- Suppliers of wrought steel and alloy bars/rods/forgings
- Quality assurance and compliance teams in manufacturing
Related standards
- Other CEN/ISO standards for material testing, heat treatment and engine component specifications are typically used alongside EN 10090:1998 to define mechanical/chemical testing methods, tolerances and performance testing. Consult the official EN 10090 document for direct cross‑references.
Keywords: EN 10090, valve steels, valve alloys, internal combustion engines, intake valves, exhaust valves, wrought high‑alloy, bars, wire, forgings, surface finish, engine manufacturing, CEN.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ventilska jekla in zlitine za motorje z notranjim zgorevanjemVentilstähle und -legierungen für VerbrennungskraftmaschinenAciers et alliages pour soupapes de moteurs a combustion interneValve steels and alloys for internal combustion engines77.140.10Jekla za toplotno obdelavoHeat-treatable steels27.020Motorji z notranjim zgorevanjemInternal combustion enginesICS:Ta slovenski standard je istoveten z:EN 10090:1998SIST EN 10090:1998en01-avgu
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Frequently Asked Questions
SIST EN 10090:1998 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Valve steels and alloys for internal combustion engines". This standard covers: 1.1 This European Standard applies to the grades of wrought high-alloy materials listed in table 1. These valve materials are used for intake and exhaust valves in reciprocating internal combustion engines. It is applicable to bars, wire, rod and forgings and for the surface finishes listed in note 3 of 6.3. 1.2 This European Standard does not apply to alloys resistant to wear and corrosion which are used to protect valve seat surfaces.
1.1 This European Standard applies to the grades of wrought high-alloy materials listed in table 1. These valve materials are used for intake and exhaust valves in reciprocating internal combustion engines. It is applicable to bars, wire, rod and forgings and for the surface finishes listed in note 3 of 6.3. 1.2 This European Standard does not apply to alloys resistant to wear and corrosion which are used to protect valve seat surfaces.
SIST EN 10090:1998 is classified under the following ICS (International Classification for Standards) categories: 27.020 - Internal combustion engines; 77.140.10 - Heat-treatable steels. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 10090:1998 is associated with the following European legislation: EU Directives/Regulations: 97/23/EC; Standardization Mandates: M/005, M/071. 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.
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