Internal combustion engines. Piston rings - Material specifications
Internal combustion engines. Piston rings - Material specifications
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What is ISO 6621 ‑ 3 about?
ISO 6621 ‑ 3 is part three of the multi-series standard that classifies materials intended for the manufacture of piston rings, based on their mechanical properties and the stresses the materials are capable of withstanding. ISO 6621 ‑ 3 is applicable to piston rings for reciprocating internal combustion engines up to and including those of 200 mm in diameter. ISO 6621 ‑ 3
Mentioned in the description and other BS standards
