Address :		27th, Second Bhoiwada, Mumbai - 400 002, (India)
Contact No.:		Mr. K. B. Jain 0-9819 328 077
E-Mail-Id :		vsh_trades@hotmail.com info@vijaysteelhouse.com

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Stainless Steel

Stainless Steel

Our company is amidst renowned Stainless Steel and stainless steel product Stockists and Suppliers of Maharashtra. The wide assortment of Stainless Steel and stainless steel products which we are offering to the clients is sourced from the most trusted names of the Indian market. These Stainless Steel and its products are in compliance with the industrial quality standards. The entire gamut of Stainless Steel Products is available with us in different grades, sizes, and other forms, to cater to the client’s exact demands. These Stainless Steel and Stainless Steel Products possess dimensional accuracy, rugged design, and corrosion resistance.

 

Stainless Steels Are Used In :

• Heat exchangers
• Gas plants
• Power plants
• Refrigeration
• Chemicals and fertilizers
• Pharmaceuticals
• Automobiles

 

 

 

Grades Available :

• 409, 410, 430, 202, 303, 304, 304L, 316, 316L, 316TI, 317, 309, 309S, 310, 310S, 321, 347 etc

 

Stainless Steel :

Stainless steel’s most notable attribute is its ability to resist corrosive attack. Like aluminium it is a relatively new material but it has found many applications. It is a basic alloy of steel that contains chromium but other alloying elements are added to provide specific attributes. Stainless steel finds many applications where a hard material is required that will resist corrosive attack.

 

The basics

It is the addition of a minimum of 11% of chromium that gives stainless steel its ability to withstand corrosive attack. Chromium has the effect of creating a naturally protective oxide film on the surface of the metal – a film that ‘self-heals’ almost directly after removal of the metal surface. This is very similar to the action found in aluminium, which makes it such an atmospheric resistant metal.

There are four main alloy groups, known as “Austenitic”, “Ferritic”, “Martensitic” and “Duplex/Super Duplex”. All are produced in a variety of shapes and sizes.

Of course, no metal is totally “corrosion resistant”. In the right circumstances all metals will corrode including stainless steel, but as long as the passive surface layer is maintained, “rusting”, and other forms of corrosion such as pitting, crevice, galvanic, intergranular, stress etc. are avoided.

Alloy groups

Ferritic stainless steels contain a minimum of 11% chromium. They are relatively inexpensive as they contain no nickel. Ferritic stainless steels are magnetic.

Austenitic stainless steels contain a minimum of 18% chromium, along with a minimum of 8% nickel. They are non-magnetic, which is a great advantage in many applications, especially marine applications where unwarranted magnetic influence can affect compasses and other direction finding equipment.

They also possess improved formability (e.g. deep drawing or stretching) compared to ferritic stainless steels and are tougher, maintaining their strength better at high temperatures. Weldability is improved as is corrosion resistance, and, with the addition of less that 2% molybdenum, corrosion resistance is significantly improved.

Martensitic stainless steels contain a minimum of 11.5% chromium, generally with no nickel content but an addition of 0.15% - 0.4% carbon. These steels give very high strength in the hardened condition. Tempering at 150°C to 170°C increases corrosion resistance, and the abrasion and wear resistance of these alloys is well known. Some variants containing high carbon content are not, however, recommended for welding.

Duplex and Super Duplex stainless steels typically contain approx. 22% chromium, 5% nickel and around 0.1% minimum of nitrogen.

Effectively, they are of a mixed ferritic/austenitic structure, and have high strength combined with good corrosion resistance, good weldability, formability and resistance to crevice and pitting corrosion in chloride solutions.

Alloy selection