Stainless Steel

Publish Date 10/20/2017 6:22:52 PM.


By adding 12% Chromium content to carbon steel, stainless steel would be produced. Chromium protects the base of steel by forming a sticky oxide layer which is highly resistance to corrosion. Since production of this type of steel face some difficulties and limits in Iran and according to high demands, Caspian Steel Co. intends to provide this product from the best producer in the world.

This product is available in different grades and types.


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Ferritic stainless steel (Grades: 410L, 410S, 405, 409L, 430, 436L, 439, 444)

The standard ferritic grades are alloyed with chromium (11.2–19%), but with no, or very small addition of nickel. As nickel is one of the most expensive alloying elements and has demonstrated high price volatility, the low nickel content of the ferritic grades make them more price stable compared to grades with high nickel content.

The ferritic grades, also referred to as Cr-steels, are magnetic due to the ferritic microstructure.

Martensitic and precipitation hardening stainless steel (Grades: 420J1, 420J2, 410)

The martensitic grades are the smallest group of stainless steel. To improve the strength and harden ability of the martensitic grades they have higher carbon content compared to other grades, and nitrogen is sometimes added to further improve the strength.

Duplex stainless steel (Grades: S32101, S32304, S31803, S32205, S32750)

Duplex grades have a ferritic-austenitic microstructure, with a phase balance of approximately 50% ferrite and 50% austenite. Duplex grades combine many of the beneficial properties of ferritic and austenitic stainless steels. The duplex microstructure also contributes to the high strength and high resistance to stress corrosion cracking. Characteristic for the duplex stainless steels is high chromium content (20.1–25.4%), but rather low nickel content (1.4–7%) compared to the austenitic grades. The low nickel content of the duplex grades makes them more price stable.

Recently a new group of duplex grades with better formability has been introduced, the so called FDX-grades.

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Austenitic stainless steel (Grades: 301L,301, 304, 304L, 304N, 304N2, 347, 321, 305, 370)

 The austenitic grades are the largest group of stainless steels, and can be divided into five sub-groups, Cr-Mn grades, Cr-Ni grades, Cr-Ni-Mo grades, high performance austenitic grades and high temperature austenitic grades. The austenitic grades have good to excellent corrosion resistance, good formability and weld ability.


Flat products, Hot Rolling, Cold Rolling, Slab, Tube.

Surface Quality:

Depending on the type of application, finishes are available in a variety of types.



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