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JSL Stainless Ltd. is a name synonymous with unparalleled quality assurance and decades of industry reputation for global quality stainless steel flat products across all grades.

Stainless Steel - an anti-corrosive aesthetics product is produced with unique two stage liquid steel processing technology. It is the most recycled commodity with varied product life cycle depending upon usage. Stainless Steel products offer immense market potential for industrial, infrastructure, transportation, home, architectural and construction applications.

Types of Stainless Steel

Stainless Steel grades are essentially alloys of iron with more than 10.5% chromium. These grades may contain additional elements of nickel, manganese, carbon, nitrogen and silicon. They can further be modified for special purposes by addition of molybdenum, titanium, niobium, silicon, sulphur etc. A wide range of these grades have been developed based on specific requirements. These are classified into following categories based on their micro structure:

Austenitic Stainless Steel
  JSL Designation/Grade UNS Designatoin USA-Canada/ AISI-ASTM-ASME INDIA/ IS LEtter Symbol European Chiness GERMANY/DIN Designation Japan/JIS GOST
Austenitic Cr-Mn J-201 S20100 201 X10Cr17Mn6Ni4N20 - - X12CrMnNiN17-7-5 SUS201 -
J-201L S20103 201L - 1.4371 - X2CrMnNiN17-7-5   -
J-201LN S20153 201LN - - - -   -
J-202 S20200 201 X10Cr18Mn9Ni5 - - X12CrMnNiN18-9-5   -
J-204Cu S20430 - - - -     -
JSLAUS ( J1) - - - - - - - -
J-4 - - - - - - - -
Austenitic Cr-Ni J-301 S30100 301 X10Cr17Ni7 1.4310 1cR17nI7 X12CrNI17-7 SUS301 -
J301L S30103 301L - - - - - -
J301LN S30153 301LN - 1.4318 - X2CrNiN18-7 - -
J-304 S30400 304 X4Cr19NiN9 1.4301 0Cr18Ni9 X5CrNi18-10 SUS304 -
J-304H S30409 304H - - - - -  
J-304L S30403 304L - 1.4307 - X2CrNi18-9 SUS304L  
J-304LN S30453 304LN - 1.4311 - X2CrNi18-10 SUS304LN  
J-309 S30900 309 X15Cr24Ni13 1.4828 - - -  
J-309S S30908 309S - 1.4833 1Cr23Ni13 X7CrNi23-14 SUS309S  
J-310 S31000 310 X20Cr25Ni20 - - X15CrNiSi25-20 SUH310 20Ch25N2052
J-310S S31008 310S - 1.4845 0Cr25Ni20 X12CrNi25-21 SUS310S 2Ch23N18
J-316 S31600 316 X04Cr17Ni12Mo2 1.4401 0Cr17Ni12Mo2 X5CrNiMo17-12-2 SUS316 -
J-316L S31603 316L X02Cr17Ni12Mo2 1.4404 00Cr17Ni14Mo2 X2CrNiMo17-13-2 SUS316L -
J-316LN S31653 316LN - 1.4429 - X2CrNiMoN17-11-2 SUS316LN -
J-316Ti S31635 316Ti X04Cr17Ni12Mo2Ti 1.4571 0Cr18Ni12Mo2Ti X6CrNiMoTi17-12-2 SUS316Ti 10Ch17N13M2T
J-317 S31700 317 - - - - - -
J-317L S31703 317L - 1.4438 00Cr19Ni13Mo3 X2CrNiMo18154 SUS317L -
J-317LN S31753 317LN - - - - - -
J31727 S31727 - - - - - - -
J-321 S32100 321 X04Cr18Ni10Ti 1.4541 0Cr18Ni10Ti X6CrNiTi18-10 SUS321 08Ch18N10T
J-347 S34700 347 X04Cr18Ni10Nb 1.4550 0Cr18Ni11Nb X6CrNiNb18-10 SUS347 08Ch18N12B

Austenitic Stainless Steel grades are characterized by superior corrosion and oxidation resistance, weldability, ductility and toughness compared to ferritic and martensitic Stainless Steel grades for similar levels of chromium. Austenitic Stainless Steel grades exhibit excellent resistance to atmospheric corrosion. They effectively withstand attack of organic acids (e.g. acetic, lactic, citric etc.), exhibit good resistance to oxidizing acids (e.g.nitric acid) and fair resistance to mineral acids (e.g. sulfuric acid).These grades are well suited for severe forming. Some grades work hardens to a high degree while others have been developed to minimize this tendency. Work hardening is advantageous in certain cases where high strength is required. Austenitic Stainless Steel grades are nonmagnetic in annealed condition but depending on composition, they may become mildly magnetic when cold worked. These Stainless Steel grades possess good high temperature properties such as creep strength and resistance to oxidation or scaling. They also exhibit excellent low temperature ductility and impact strength. Austenitic Stainless Steel grades can be readily fabricated by bending, drawing, spinning, punching, drilling, machining and welding and can be readily polished to a high finish. These attributes make them very versatile and popular for diverse applications in a variety of industries. There are two broad categories of Austenitic Stainless Steel — chrome nickel (300 Series) and chrome manganese (200 Series). Currently, chrome-nickel is the largest produced Stainless Steel category globally. Typical applications for this category include food processing, chemical plants, pharmaceutical equipment, hospitals, textile, architectural, building construction, kitchenware, consumer durables etc. Chrome-manganese Stainless Steel is the fastest growing of all Stainless Steel categories on account of its high performance to cost ratio. Its applications include kitchenware, cutlery, sinks, automotive trim, architectural, buildings, furniture, buses, trains and ornamental tubes.

Martensitic Stainless Steel
  JSL Designation/Grade UNS Designatoin USA-Canada/ AISI-ASTM-ASME INDIA/ IS LEtter Symbol European Chiness GERMANY/DIN Designation Japan/JIS GOST
Martensitic J-410 S41000 410 X12Cr12 1.4006 1Cr12 X12Cr13 SUS410 -
J415 S41500 - - 1.4313 - X3CrNiMo13-4 - -
J-420 S42000 420 X20Cr13 1.4021 - X20Cr13 SUS420JI -
J-431 S43100 431 - 1.4057 1Cr17Ni2 X17CrNi15-2 - 20Ch17N2
JBS - - - - - - - -

Martensitic Stainless Steel grades are plain chromium grades containing 11.5 % to 18% of chromium with relatively high carbon content (0.1% – 1.2%). Initially developed for cutlery, these are well suited for applications requiring high hardness and resistance to abrasion and erosion. These grades are magnetic and display fair cold forming characteristics. Although these can be hardened by aircooling, oil quenching is sometimes used to assure uniform hardening. These grades can be welded but require stress relieving after welding. They exhibit their best corrosion resistance in the hardened condition and perform well in mildly corrosive environments. Martensitic Stainless Steel grades are commonly used for knife blades, turbine blades, surgical instruments, fasteners, shafts, spindles, valves and pins.

Ferritic Stainless Steel
  JSL Designation/Grade UNS Designatoin USA-Canada/ AISI-ASTM-ASME INDIA/ IS LEtter Symbol European Chiness GERMANY/DIN Designation Japan/JIS GOST
Ferritic J-405 S40500 405 X04Cr12 1.4002 0Cr13Al X6CrAl13 SUS405 -
J-409 S40900 409 - 1.4512 - X2CrTi12 SUH409 -
J-409RC - - - - - - - -
J-410S S41008 410S - 1.4000 0Cr13 X6Cr-13 SUS403 -
J-430 S43000 430 X07Cr17 1.4016 1Cr17 X6Cr17 SUS430 -
J-430Ti - - - - - X6CrTi17 SUS430LX -
J-436 S43600 436 - - - - - -
J-436L S43932 436L - - - - SUS436L -
J-439 S43035 439 - - 00Cr18Ti X3CrTi17 - -
J-441 S43940 - - 1.4509 - X2CrTiNb18 - -
Ferritic + Martensitic
  J-409M - - - - - - - -

Ferritic Stainless Steel grades are non-hardenable plain chromium grades with chromium content varying from 10.5% to 28% and with low carbon content. These are magnetic and exhibit a better resistance to corrosion than martensitic grades. These grades are employed in applications where the desired formability, weldability and corrosion resistance is between those of martensitic and austenitic types. The ferritics can be polished or buffed to achieve high luster.

Duplex Stainless Steel
  JSL Designation/Grade UNS Designatoin USA-Canada/ AISI-ASTM-ASME INDIA/ IS LEtter Symbol European Chiness GERMANY/DIN Designation Japan/JIS GOST
Duplex (Austenitic + Ferritic)
  J-2205 S32205 2205 - - - - - -
J-31803 S31803 - - 1.4462 - X2CrNiMoN22-5-3 SUS329J3L -
J-2304 S32304 2304 - 1.4362 - XCrN N 23-4 - -

Duplex Stainless Steel grades contain relatively high chromium (between 18% and 28%) and moderate amounts of nickel (1% to 8%). This combination of ferritic and austenitic structures is called duplex. Many of these grades contain molybdenum (1% to 5%) and nitrogen (0.05% to 0.3%). Some duplex Stainless Steel grades also contain manganese (up to 5%), copper (up to 2%) and tungsten (up to 2%). These grades exhibit high resistance to stress, corrosion cracking and chloride ion attack and have higher yield strength than that of austenitic or ferritic steel grades. These properties combined with suitable design lead to material saving. High quality fabrication and welding are possible if the operator is trained well. These grades are used in marine applications, offshore platforms, paper and pulp industry, chemical, petrochemical and desalination plants.

 


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