Technical Specifications

Mechanical Properties

What is Stainless Steel

Classification of Stainless Steels

Size Range, Surface Finish & Edge Condition

 

 

 

 

What is Stainless Steel?
Stainless steels are iron-based alloys containing a minimum of 10.5% Chromium with or without other alloying elements. The term "STAINLESS" implies a resistance to staining, rusting, and pitting in the general normal environment. Stainless Steels are technically known as "heat and corrosion resisting steels". That means they have in general a higher resistance to corrosion in some definite environment, as well have a higher resistance to scaling at high temperature. With specific restrictions in certain types, the stainless steels can be shaped and fabricated in conventional ways. They can be produced and used in the as-cast condition, shapes can be produced by powder-metallurgy techniques, cast ingots can be rolled or forged. The rolled product can be drawn, bent, extruded, or spun. Stainless Steel can be further shaped by machining, and it can be joined by soldering brazing, and welding. It can be used as an integral cladding on plain carbon or low-alloy steels.

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Classification of Stainless Steel
Stainless Steels vary in their composition from a fairly simple alloy of, esentially, iron with 11% chromium, to complex alloys that include 30% chromium substantial quantities of nickel, and half a dozen other effective elements.
Based on the alloy content and the internal structure, on rapid cooling, stainless steels are classified into three major categories viz. Austenitic, Ferritic and Martensitic.

Austenitic : The Austenitic Stainless Steel contains 16 to 26% Chromium and 6 to 22% Nickel. They are non-magnetic and have excellent corrosion resistance. They are not hardenable by heat treatment. However,they can develop high strength even on light cold working. They have excellent weldability, formability, hygiene factor and cryogenic properties. They are identified in the AISI 300 series.

Ferritic : The Ferritic Stainless Steel contains 12 to 30% Chromium without any Nickel. They are ferro-magnetic in nature and generally not hardenable by heat treatment. These steels possess good resistance to corrosion and fair weldability. They are identified in the AISI 400 series.

Martensitic : The Martensitic Stainless Steel contains 11 to 14% Chromium without any Nickel, but with a slightly higher carbon content compared to the Austenitic and Ferritic stainless steels. They are ferro-magnetic in nature and hardenable by heat treatment. They possess moderate corrosion resistance, poor weldability and are identified in the AISI 400 series.

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Product

Thickness (mm)

Width (mm)

Lenth (mm)

Surface Finish

Edge Condition

Cold Rolled Coil

0.20-4.50
0.15-0.20

460 max
320 max

Coil Form
Coil Form

2B/2D
2B/2D

Trimmed/ Mill Edge

Hot Rolled Coil

12.0-2.5

400 max.

Coil Form

Hot Rolled(Black)
/No1(HR Annealed & Pickled)

Trimmed/ Mill Edge

Hot Rolled Plate

5.0-50.0
2.50 - 12.0

400

6000*

Hot Rolled No1(HR Annealed & Pickled)

Sheared/ Mill Edge

Slab

100-200

100-400

2500*

As Cast & Ground

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Bloom

160x160/200x200

--

2500*

As Cast & Ground

--

Round Bar

Dia: 80 mm per order

--

5000*

As Rolled

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