J Series Austenitic Stainless Steel-00-1327

Jindal Stainless is the largest producer of chrome- manganese Stainless Steel in the world. It supplies grades J201, J202, JSL AUS (J1), J204Cu and J4. All these grades have austenitic structure in annealed condition at ambient temperature similar to 18/8 (304) Stainless Steel with higher strength, excellent formability, weldability and good corrosion resistance. These grades are non-magnetic in annealed condition and like 18/8 (304) become mildly magnetic after cold working. J201 and J202 fully conform to AISI 201 and AISI 202 and have even lower levels of carbon for superior corrosion resistance.

J202 from Jindal Stainless comes with minimum 17.5% chromium. Thus, J202 has almost similar chromium and carbon levels as European and Indian standards for 18/8 (304) grades. This results in corrosion resistance similar to 18/8 (304) in various media such as general atmosphereic corrosion, mild acids, organic compunds etc. Presence of moderate amount of nitrogen improves pitting resistance of this Stainless Steel and reduces its susceptibility to sensitization on welding. This grade is suitable for replacing 18/8 (304) Stainless Steel for numerous applications in welded as well as un-welded condition.

JSL AUS(J1) has lower nitrogen content than AISI 201 and 202 and contains copper to obtain a softer product with reduced work hardening rate to facilitate forming operation. The chemistry is so optimized as to achieve drawability similar to that of 18/8 (304). JSL AUS (J1) can be used for extra deep drawn products and has been used for many applications involving press-forming/ fabrication where 18/8 (304) was previously chosen.

Grades J204Cu and J4 have moderate amount of nitrogen along with copper. J204Cu is an improved lower carbon version of international specification UNS S20430, the properties of which have been extensively evaluated in USA and Europe. The properties of J204Cu and J4 such as strength, ductility, and their ability to be fabricated by bending, forming and welding resemble Type 301 Stainless Steel. J204Cu and J4 can be used for moderately drawn items and are replacing 301 and 18/8 (304) in applications requiring moderate corrosion resistance. They also have an advantage over 18/8 (304) in applications involving wear, abrasion and erosion as well as for certain structural uses.

These grades have been subjected to extensive mechanical and corrosion testing in India and abroad and it has been established that they constitute appropriate engineering materials for substituting 18/8 (304) grade in a variety of applications. However JSL AUS (J1), J204Cu and J4 should not be used for external applications in coastal areas with medium to heavy rainfall. These grades are not recommended for handling/storage of acids and other highly corrosive industrial chemicals. On the other hand, J202 with minimum 17.5% chromium exhibits corrosion behaviour resembling 18/8 (304) in such media.

Thus, Jindal 200 series provides cost effective and appropriate solutions for wide range of applications.

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