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ISO 6621-3:2021

Internal combustion engines — Piston rings — Part 3: Material specifications ISO 6621-3:2021

Publication date:   Jun 16, 2021

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 22/SC 34 Propulsion, powertrain and powertrain fluids

International Standard

43.060.10   Engine block and internal components

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Scope

This document classifies materials intended for the manufacture of piston rings, based on their mechanical properties and the stresses the materials are capable of withstanding.
This document is applicable to piston rings for reciprocating internal combustion engines up to and including those of 200 mm in diameter. It is also applicable to piston rings of compressors working under similar conditions.

Life cycle

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WITHDRAWN
ISO 6621-3:2000

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PUBLISHED
ISO 6621-3:2021
90.60 Close of review
Sep 3, 2026




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