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CORROSION RESISTANCE
Martensitic grades generally exhibits moderate corrosion resistance due to high carbon content.
WELDABILITY
It offers very limited weldability due to its hardenability.Special consideration may be required to prevent cracking by preheating and post weld heat treatment to achieve desired characteristics/properties.
FORMABILITY
Martensitic grades are moderately cold formed due to high carbon content.The strength obtained by heat treatment depends on the carbon content of the steels. Increasing the carbon content increases the strength and hardness potential but decreases ductility and toughness.
APPLICATIONS OF MARTENSITIC STAINLESS STEELS
Martensitic stainless steels are used where the application requires good tensile strength, creep, and fatigue strength properties.Due to their high strength in combination with some corrosion resistance, martensitic steels are suitable for applications where the material is subjected to both corrosion and wear.
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Martensitic steels with high carbon content are often used for tool steels, cutlery, fasteners, dies, surgical and dental instruments.They are also used in petrochemical industry for gas and steam turbine blades.
