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ISO 3506-5:2022

Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 5: Special fasteners (also including fasteners from nickel alloys) for high temperature applications

Edition date: 2022-04-29
In Force
Available languages: French, English
Summary:

This document specifies the mechanical and physical properties of bolts, screws, studs and nuts, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels (i.e. martensitic stainless steels and precipitation hardening austenitic stainless steels) and nickel alloys, intended for use at high temperatures up to 800 °C.

Tests in accordance with Clause 9 are performed at the ambient temperature range of 10 °C to 35 °C, and other tests can be performed at higher temperatures, see Clause 10.

NOTE       Fasteners specified in this document are also suitable when used at low temperatures, typically down to -50 °C. For more information, see ISO 3506-6.

The term “fasteners” is used in this document when bolts, screws, studs and nuts are considered all together.

ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and nickel alloys as well as their properties.

This document applies to fasteners:

—    with ISO metric thread in accordance with ISO 68-1,

—    with diameter/pitch combinations in accordance with ISO 261 and ISO 262,

—    with coarse pitch thread M3 to M39, and fine pitch thread M8×1 to M39×3,

—    with thread tolerances in accordance with ISO 965-1 and ISO 965-2, and

—    of any shape but with full loadability.

Stainless steel and nickel alloy fastener symbols can be used for sizes outside the diameter limits of this document (i.e. for bolts, screws and studs with d < 3 mm or d > 39 mm and for nuts with D < 5 mm or D > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met.

Fasteners with reduced loadability (i.e. thin nuts and bolts, screws and studs with head or unthreaded shank weaker than the threaded shank) are not dealt with in this document.

This document does not specify requirements for functional properties such as:

—    torque/clamp force properties,

—    shear strength,

—    fatigue resistance,

—    weldability,

or

—    properties of bolted joints and fasteners in high temperature environment (see test methods at high temperature for fasteners in Clause 10).



Le présent document spécifie les caractéristiques mécaniques et physiques des vis, goujons, tiges filetées et écrous, à filetage à pas gros et à filetage à pas fin, en aciers inoxydables résistant à la corrosion (c'est-à-dire aciers inoxydables martensitiques et aciers inoxydables austénitiques durcis par précipitation) et en alliages de nickel, prévus pour des utilisations à hautes températures jusqu'à 800 °C.

Les essais conformément à l'Article 9 sont réalisés dans la plage de température ambiante de 10 °C à 35 °C, et d’autres essais peuvent être réalisés à des températures plus élevées, voir l'Article 10.

NOTE            Les fixations spécifiées dans le présent document conviennent également pour des utilisations à basses températures, typiquement jusqu'à -50 °C. Pour plus d'informations, voir l'ISO 3506-6.

Le terme «fixations» est utilisé dans le présent document lorsque les vis, goujons, tiges filetées et écrous sont considérés dans leur ensemble.

L'ISO 3506‑6 fournit des règles générales et des informations techniques supplémentaires sur les aciers inoxydables et alliages de nickel appropriés ainsi que leurs propriétés.

Le présent document s'applique aux fixations:

—    à filetage métrique ISO conforme à l'ISO 68-1,

—    de combinaisons diamètre/pas conformes à l'ISO 261 et à l'ISO 262,

—    de M3 à M39 pour les filetages à pas gros, et M8 × 1 à M39 × 3 pour les filetages à pas fin,

—    de tolérances de filetage conformes à l'ISO 965-1 et à l'ISO 965-2, et

—    de toutes formes, mais avec capacité de charge intégrale.

Les symboles de fixation en acier inoxydable ou alliage de nickel peuvent être utilisés pour des dimensions en dehors des limites de diamètres du présent document (c'est-à-dire pour des vis, goujons et tiges filetées de diamètre d < 3 mm ou d > 39 mm et pour des écrous de diamètre D < 5 mm ou D > 39 mm), à condition que toutes les exigences chimiques, mécaniques et physiques applicables soient satisfaites.

Les fixations à capacité de charge réduite (c'est-à-dire les écrous bas, les vis dont la résistance de la tête est plus faible que la partie filetée, et les vis et goujons dont la partie lisse (tige) est plus faible que la partie filetée) ne sont pas traitées dans le présent document.

Le présent document ne spécifie pas d'exigence pour des caractéristiques fonctionnelles telles que:

—    les caractéristiques de couple/tension,

—    la résistance au cisaillement,

—    la résistance à la fatigue,

—    la soudabilité,

ou

—    les caractéristiques des assemblages boulonnés et des fixations dans un environnement à haute température (voir les méthodes d'essai à hautes températures des fixations à l'Article 10).
ICS: 21.060.99-Other fasteners
CTN: ISO/TC 2 - 45446

International Equivalence

Identic UNE-EN ISO 3506-5:2024

Identic DIN EN ISO 3506-5:2023-08

Identic DIN EN ISO 3506-5:2024-02

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