Some Special Steels


SteelCompositionPropertiesUses
Stainless SteelFe=75%
Cr=18%
Ni=8%
C=1%
Have very high chemical resistance.in using ornamental pieces, cutleries, utensils, etc.
Manganese SteelFe=86%
Mn=135
C=1%
Very hard and resistant to wear and tear.Railway tracks, safes, safety helmets.
Tungsten SteelFe=94%
W=5%
C=1%
Very hard.Many high speed cutting tools.
InvarFe=64%
Ni=36%
Have very small coefficient of linear expansively.in making clock hands , pendulum rods, meter scales, etc.
Nickel SteelFe=96-98%
Ni=2-4%
Resistant to corrosion and is elastic.wire cables, gears, drive shafts, etc.
Perm alleyFe=21%
Ni=78%
C=1%
Strongly magnetized by electric field and gets demagnetized when current is switched off.used in making electromagnet.