MONEL K-500 alloy has the same corrosion resistance as 400, but has higher mechanical strength and hardness. It has good heat corrosion resistance and long-term structural stability. It is mainly used to manufacture turbine blades and gas turbine blades with working temperatures below 750℃ on aircraft engines; used to manufacture fasteners and springs on ships; pumps and valve parts on chemical equipment; scraper blades on papermaking equipment, etc.
The rim has numerous holes drilled into it that enables the flanged to be attached to a bolted flange. This design is far better because of the structural valve.