400 series stainless steel, also known as martensitic or ferritic stainless steel, is an alloy containing chromium but no nickel. These

400 series stainless steel, also known as martensitic or ferritic stainless steel, is an alloy containing chromium but no nickel. These types of stainless steel are magnetic and generally offer good mechanical properties and high thermal conductivity.

1.4401 and 1.4404 are equivalent to 316L stainless steel‌. 1.4404 is the German DIN standard stainless steel, equivalent to the national standard 316L stainless steel.

410 stainless steel is a martensitic stainless steel with high hardness and strength, as well as good corrosion resistance.

1.4028 is a martensitic stainless steel with good machining properties and high corrosion resistance and polishing properties after heat treatment, as well as high strength and wear resistance. This material is particularly suitable for manufacturing plastic molds that bear high loads, high wear resistance, and are subject to corrosive media.

‌SUS420 tool steel (also known as 2Cr13) is a high-hardness, high-wear-resistant martensitic stainless steel known for its excellent cutting performance and good corrosion resistance‌‌.