BS ISO 6621-3:2021

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 <span data-contrast="none" dat...