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AISI Type |
Characteristics |
Typical Applications |
| 302 |
General purpose stainless steels. |
Widely used for severely formed parts. For welded construction and heavy wall vessels formed in a number of draws for welded construction. |
| 304 |
General purpose stainless steel especially for welded construction. |
Due to its good resistance to corrosion, good cold workability and good weld ability, this steel is widely used for household goods, dish washers, cutlery, in the consumer good industry, in architecture, in the automobile industry, etc, in addition it is used for the construction of apparatus and containers in the dairy, beer, wine and food industries as well as in the production of nitrogen compounds 304 is approved for use as well as wall ties in the building industry. |
| 304L |
Low carbon modification of typo 304, restricts carbide precipitation during welding. |
Ensuring superior results in overcoming the problem of carbide precipitation in the weld zone without post annealing. Can be used in range of 420-8200C for up to 4 Hrs, without becoming susceptible to intergranular corrosion. |
| 321 |
Stabilized 18/8 type with titanium: - not sensitive to intergranular corrosion within the carbide precipitation range of 420 to 8700C, corrosion resistance comparable to 304. |
Due to addition to titanium to form carbide, 321 is i.e. resistant in continuous operation up to 4000C even in the welded state. 321 is used in all branches of food and chemical industries, especially in the manufacture of nitrate fertilizers and the construction of vehicles for the transport of aggressive chemicals. In addition, 321 are used for silencers and emission control equipment. 321 is approved for use as wall ties in the building industry. Due to its great toughness, 321 also has a wide range of application in low-temperature technology. |
| 347 |
Stabilized 18/8 type with columbium, corrosion resistance comparable to type 304. |
Used within 420-8700C for welded construction. No annealing required after welding. |
| 316 |
High creep strength, superior corrosion resisting properties in reducing atmosphere. |
316 is i.e. resistance under continuous operating condition up to 3000C. Due to the molybdenum additive, this steel possesses higher resistance to non-oxidizing acids and to pitting corrosion. Architects make use of it for external cladding in aggressive atmospheres. 316 are approved for use as wall ties in the building industry. This steel has a wide field of application in the construction of apparatus for textile finishing, in the chemical industry, for household goods, and for storage and transport container holding aggressive materials, pharmaceutical industry, synthetic fiber industry etc. |
| 316L |
Low carbon modification of 316 |
316L possesses a very low carbon content and is therefore i.e. resistant under continuous operating conditions up to 4000C. 316L is used in the chemical and pharmaceutical industries, in the manufacture of synthetic fibers, in carbon by-product recovery and in textile finishing. Due to the addition of molybdenum. 316L possesses high resistance to non-oxidizing acid and to pitting corrosion. Also this steel is widely used in chemical industry, in the production of urea, in the manufacture of synthetic fibers, in the cellulose industry and in textile finishing. The molybdenum content of over 2% to 3% increases resistance to non-oxidizing acids and to pitting. |
| 310 |
Excellent high temperature properties with good ductility & weld ability. |
Used up to 11500C for continuous service & 1050 for intermittent service in oxidizing atmosphere. |
| 430 |
Good combination of corrosion resistance, useful mechanical properties & good formability. Not harden able by heat treatment. |
Due to its great durability and to the fact that it is easily cold rolled. 430 is widely used in the house-hold for cutlery, sinks, washing machines and kitchen appliances, in interior decorating, in the automobile industry for bumpers, wheel caps and trim and for non welded parts in industrial canteens and the food industry, fasteners appliance, furnace parts, nitric acid processing equipment etc. |
| 410 |
General purpose corrosion & heat resisting steel gives maximum corrosion resistance after heat treatment. |
Cutlery, shafts, cracking tower, bubbler caps & trays for oil & gas industry, beater bars for paper & pulp industries etc. |
| 420 |
Good ductility in annealed condition, hard enable to highest hardness of all 12% cr. types, gives best corrosion resistance properties in hardened, ground or polished condition. |
Cutlery, surgical instrument, valves cutting blades, die sheet, brake discs, kitchen knives, vernier callipers etc. | |
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Contact : Great Steel & Metals
Post Box No. 3717, 10/12 New Hira Building, 1st Floor Room No. 15, 1st Parsiwada,
Mumbai 400 004
Tel : 2385 4314 / 23868818 Fax: 2387 8403
E:mail : mehta@greatmetal.com
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