Question

What are the 4 types of stainless steel?

Answer 1

Explanation:

There are five main families, which are primarily classified by their crystalline structure: austenitic, ferritic, martensitic, duplex, and precipitation hardening.

Austenitic stainless steel. ...

Ferritic stainless steels. ...

Martensitic stainless steels. ...

Duplex stainless steel. ...

Precipitation hardening stainless steels. ...

Grades.

Answer 2

Answer:

Stainless steel is generally divided into four distinct groups:

Austenitic. The austenitic group comprises the most common types of stainless steel. Austenitic stainless steels, in comparison with other types, contain elevated levels of chromium, molybdenum and nickel. They are particularly versatile and are renowned for displaying excellent strength and malle­ability.

Ferritic. Containing anywhere between 10.5% and 30% chromium, ferritic stainless steels usually have low carbon consis­ten­cies of not more than 0.1%. Ferritic stainless steels are magnetic and are primarily chosen for their resistance to temperature oxidation and stress corrosion cracking.

Duplex. Duplex stainless steel combines the austenitic with the ferritic, resulting in a metal that is stronger than both: this higher strength can lead to considerable weight reductions. Its excellent resistance to corrosion, even in demanding envi­ron­ments, make it perfect for use in marine appli­cations.

Martensitic. Structurally similar to ferritic stainless steel but with an elevated carbon content (up to 1.2%), martensitic stainless steel can be hardened to a large degree. They are especially useful for creating medical tools and surgical instruments.­