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ISO 6621-3:2021
Internal combustion engines - Piston rings - Part 3: Material specifications
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.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]