Monel400 2.4360 N04400 plate flanges
Monel 400 flanges are also available for higher temperatures in reduction environments. While Monel 400 flanges are typically used at elevated temperatures, they retain their mechanical properties at sub-zero temperatures. The increased hardness at freezing temperatures has been shown to only slightly impair the ductility or impact resistance of Monel 400 flanges.
Monel 400 has excellent corrosion resistance to many reducing media such as sulfuric acid and hydrochloric acid. In general, Monel 400 is more resistant to corrosion by oxidizing media than higher grade copper alloys. Even when cooled to the temperature of liquid hydrogen, Monel 400 will not undergo the ductile to brittle transition that can lead to fracture. This is especially unique compared to most ferrous materials, which are generally stronger but very brittle at extreme low temperatures.