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Martensitic & Precipitation Hardening (PH) Stainless Steels

Martensitic Stainless Steels

Martensitic stainless steels are similar to low alloy or carbon steels. In the hardened condition they have a structure somewhat similar to the ferritics with a 'body-centred tetragonal' (bct) crystal lattice. (One can view the bct structure as being a distorted body centred cubic, bcc, structure.) 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.

Chemical compositions of AISI (ASTM/ASME) and UNS martensitic and precipitation hardening stainless steel grades

Composition tables for a wide range of standards and special martensitic and precipitation hardened (PH) stainless steels are given.

Related martensitic and precipitation hardening stainless steel grades

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.

Precipitation Hardening Stainless Steels

A description is given of the main precipitation hardening steels and which sub-type of PH steel they belong to, as well as some typical heat treatment cycles and compositions.

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