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.

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