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Jindal Stainless - Gual Steel

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10<br />

t y p e s o f s t a i n l e s s s t e e l<br />

<strong>Stainless</strong> <strong>Steel</strong> grades are essentially alloys of iron<br />

with more than 11% chromium. These grades may contain<br />

additional elements of nickel, manganese, carbon,<br />

nitrogen and silicon. They can further be modified for<br />

special purposes by addition of molybdenum, titanium,<br />

niobium, silicon, sulphur etc. A wide range of these grades<br />

have been developed based on specific requirements.<br />

These are classified into following categories based on<br />

their micro structure:<br />

Ferritic <strong>Stainless</strong> <strong>Steel</strong> Martensitic <strong>Stainless</strong> <strong>Steel</strong><br />

Ferritic <strong>Stainless</strong><br />

Martensitic <strong>Stainless</strong><br />

<strong>Steel</strong> grades are nonhardenable<br />

plain<br />

chromium grades<br />

<strong>Steel</strong> grades are plain<br />

chromium grades with containing 12% to 18% of<br />

chromium content varying chromium with relatively<br />

from 11% to 28% and with high carbon content (0.1%<br />

low carbon content. These – 1.2%). Initially developed<br />

are magnetic and exhibit for cutlery, these are well<br />

a better resistance to suited for applications<br />

corrosion than martensitic requiring high hardness<br />

grades. These grades are and resistance to abrasion<br />

employed in applications and erosion. These<br />

where the desired<br />

grades are magnetic and<br />

formability, weldability display fair cold forming<br />

and corrosion resistance characteristics. Although<br />

is between those of these can be hardened by<br />

martensitic and austenitic air-cooling, oil quenching<br />

types. The ferritics can is sometimes used to<br />

be polished or buffed to assure uniform hardening.<br />

achieve high lustre. These grades can be

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