Information about Stainless Steel metal products

 

 

Stainless Steel Metal

Stainless Steel was discovered and being introduced in world by Sheffield, England born Harry Brearly in 1913. In an experiment, he found that steel’s corrosion resistance increased when the chromium content is raised to more than 10 percent of the total value. He is seen as the person who laid the foundation for the development of various stainless steel grades.

The development of stainless steel all most came to a complete standstill during the First World War. By the late 1920’s it was found that two grades of stainless steel namely martensitic stainless steel and austenitic stainless steel were the most versatile and useful. Martensic stainless steel has a chromium content of between 13 and 18 percent while austenitic stainless steel contains 18 percent chromium and 8 percent nickel.

In today's terms stainless steel is used as a generic term to describe corrosion resistant steel that has a minimum chromium capacity of 10.5 percent. The chromium creates a passive and self renewing chromium oxide film around the steel at atomic level and this prevents the iron from rusting.

Stainless Steel 301

 

An austenitic stainless steel because of its ability to attain high strength and ductility through moderate and sever e cold working can be used for automobile trims, conveyor belts, transportation cars such as railway coaches, metal fixtures for construction purposes, roof drainage products, storms door farms, tableware etc .Stainless Steel 304
It is most widely used austenitic stainless steel. It has excellent corrosion resistance and forming characteristics. Used in chemical, petrochemical and fertilizer industries and as equipment in dairy, food processing, pharmaceutical industries, in hospitals, household as kitchenware, sinks cutlery, cryogenic vessels and as heat exchangers in air conditioning / refrigeration, for machinery in paper pulp, textile, beverage sectors etc.

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Stainless Steel 304L

 

Is used in place of ss 304 for improved resistance to intergranular corrosion. It is used for parts and structures which cannot be heat treated for stress relieving after welding. It has less tendency to work harden.

Stainless Steel 310S

 

These are austenitic types with higher chromium and nickel content because of their relatively high creep strength and chemical properties at higher temperature these steels find applications of higher temperatures and severe service conditions. Used for air heaters, annealing boxes, ovens, carburizing boxes, fire box sheets, furnace lining, furnace stacks and dampers, gas turbine parts, heat exchangers, kiln lining, nozzle diaphragm assemblies for turbo jet engines, oil burner parts, paper mill equipments, oil refinery equipments recuperators etc.

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Stainless Steel 316

As austenitic stainless steel with 2.0 to 3% Mo. which improves corrosion resistance against halogens and imparts hot strength characteristics. Used for application requiring resistance to pitting corrosion and in halogen atmospheres. Typical applications; architectural trims, marine exteriors, chemical processing equipments, food processing equipments, petroleum refining equipment, pharmaceutical equipment, photographic equipment, pulp and paper processing equipment, pollution control etc.

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Stainless Steel 316L

Recommended in place of 316 when weldability has to improved. 316L stainless steel metal have low carbon that is 0.03 percent of total weight of metal which makes it more sensible while comparing with stainless steel 316 grade metal and metal components or products. This grade have a unique feature of anti corrosive characteristic and that too with a reasonable higher then what it cost 316 grade metal. This grade is widely used in marine industries, shipbuilding industries and offshore industries because of it.

 

Stainless Steel 321

As austenitic stainless steel similar to SS 304 but established with titanium to avoid intergranular corrosion. Type SS 321 resists scaling and vibration fatigue. It is used for aircraft exhaust stacks and manifolds, pressure vessels, large mufflers for stationery diesel engines, carburetors, expansion bellows, stack liners fire walls, super heaters etc.

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Stainless Steel 409/409M

It is the lowest alloyed straight chromium ferritic stainless steel. It replaces carbon steels and low alloy steels where some amount of heat or corrosion resistance and higher strength is required and where appearance is secondary. It is used for fins in heater tubes, transformer and capacitor cases, dry fertilizer spreaders, automotive exhaust systems including mufflers, resonators, silencers, pipes and emission control units, high pressure agricultural spray tanks, culverts, shipping containers, farm equipment etc.

Stainless Steel 409 M Is modification of SS 409 which is used in ears, chutes, launders, luntons, conveyor equipment and systems, tanks general handling equipment, structural application in corrosive industries, transport, walkways, cableracks etc

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Stainless Steel 410 S

SS410 S is the most commonly used 12% chromium stainless steel. Excellent combination of toughness and strength can be developed. It is good choice when good formability and high strength are required and the end use demands resistance to mildly corrosive environment. It is used for furnace parts and burners operating below 650 C, Micrometer parts, tray supports, caps and vaporizers in petroleum fractionating towers, lining for reaction chambers, coalscreens, fishing tackles, keys, lamp Brackets, rules and types, walls screen, steam turbine buckets blades, buckets covers, pump parts, petrochemical equipments, press plates etc.

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Stainless Steel 420

This contains min 0.15% and 12% Cr. T can be thermally hardened to develop very high strength. Extremely useful for cutlery. Other applications include vegetables, choppers, scissors, shears, tweezers, hand tools, dental and surgical instruments etc.

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Stainless Steel 430

SS430 with 17% Cr is inferior to SS 304 as regards deep drawability. That is why this particular grade is first choice of stainless steel utensil manufacturers and furniture makers. This grade is not only having this deep drawing feature or characteristic but also if maintained properly it don't gets rusted easily.

Stainless Steel Plates | Stainless Steel Pipes | Stainless Steel Flanges | Stainless Butt weld fittings | Stainless Bolts | stainless needle valves | Stainless Steel Circles | stainless manifold valves | | Stainless Ball Valves | Stainless Threaded Rods | Stainless Stud Bolts |


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