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Stainless Steel What is it?
Stainless steels, the composition of a family of at least 11%, a steel containing chromium. This is the main element that provides high corrosion resistance of steels, strongly attached to the surface, dense, ductile, very thin and the presence of a transparent oxide layer. Thanks very thin amorphous layer of stainless steels, corrosion resistance, chemical reactions by acting passive gain. The oxide layer consists of oxygen in the environment and external influences (cut, abrasion, machining, etc.). Regains corrupted again, even self-repairing old property.

In general, stainless steels, five main groups:
- Ferritic,
- Martensitic,
- Austenitic,
- Ferritic-Austenitic (Duplex),
- Precipitation hardening alloys can be applied.

These groups undoubtedly the most widely used austenitic and ferritic stainless steels. Contain 12-18% chromium ferritic stainless steels are low carbon austenitic stainless steels contain nickel as the basis of 18% chromium and 8%. Ferritic stainless steels contain nickel alloy magnetized. Composition of total production of stainless steel, austenitic stainless steels with 70% of the most widely used in production of stainless steel were found.

Austenitic;
(201 - 301 - 304 - 304L-304L-309 - 309S-310 - 310S-316-316-316L-316Ti-321)
Austenitic stainless steels are the initial austenitic phase. (Surface-centered cubic crystals), these alloys contain chromium and nickel, (sometimes contains manganese and nitrogen), 302 type of iron compound, about 18% chromium and 8% nickel stainless steel with a yapılandırılmıştır.Östenitik are hardened by heat. The most well-known stainless steel type 304'tür.
Formation of 304 stainless steel containing 18-20% chromium and 8-10% nickel austenitic stainless steels.

Ferritic;
(409 to 430 - 430Tİ-434-439)
Ferritic stainless steel, the basic phase (cubic crystal-based) contains iron and chromium. In general, high-chromium containing not contain nickel (between 10.5% and 30%), molybdenum, titanium, vanadium carbide, such as constructive and ferritic stainless steel containing a group of alloying elements that make the structure stable.

Martensitic;
(410 to 420 - 440A-440C)
Martensitic stainless steel type 410, 12% chromium and 0.12% carbon composition occurs. This hardened stainless steels. Martensitic steel provides great strength, but strength is reduced and kırlgan. Few steel becomes completely rigid, they are in different degrees, for example, precipitation hardening stainless steels, duplex stainless steels, cast steels. Stainless steel surfaces and a wide variety of textures and colors can be produced on a wide spectrum of color.