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Martensitic stainless steels are similar to low alloy or carbon steels. They have a structure similar to the ferritics with a 'body-centred tetragonal' (bct) crystal lattice. Due to the addition of carbon, they can be hardened and strengthened by heat treatment, in a similar way to carbon steels. They are classed as a "hard" ferro-magnetic group.
Composition tables for a wide range of standards and special martensitic and precipitation hardened (PH) stainless steels are given.
Provides tables for martensitic and PH stainless steel grades, intended to relate former BS, En, German and Swedish grade designations to the current EN steel numbers, AISI grades ('grades' in (brackets) are not a true AISI grades) and UNS (Unified Numbering System) numbers.