Retaining rings for shafts DIN 471-stainless steel 1.4122 A 40x1,75

The material 1.4122 is also known as X39CrMo17-1. This is a stainless, martensitic steel. Due to the high chromium content of up to 17%, the resistance to corrosion is higher than chrome steel, which only has a 13% chromium content. But this chrome steel is also not suitable for use in conjunction with seawater. Furthermore, this material has very good wear resistance.

Stainless steel refers to alloyed or unalloyed steels that contain at least 10.5% chromium and less than 1.2% carbon. Colloquially, stainless steel is also referred to as stainless steel (NiRo), although not all stainless steel is the same as "stainless".

A1: This grade of steel is specifically intended for machining. Owing to their high sulphur content, steels of this grade have lower corrosion resistance than equivalent steels with a normal sulphur content.