Correct Answer - Option 1 : 18% and 8%
Concept-
Stainless steel is a corrosion-resistant alloy of iron, chromium and, in some cases, nickel and other metals.
There are more than 100 grades of stainless steel. The majority are classified into five major groups in the family of stainless steels: austenitic, ferritic, martensitic, duplex, and precipitation-hardening.
The austenitic structure provides stainless steels with good ductility and formability.
This contains 18% chromium and 8% nickel and it shows good stretch-forming characteristics.
A slightly higher nickel content further increases the stability of the austenite and reduces the work-hardening tendency, increasing suitability for deep drawing.
Unlike low-nickel, high-manganese alloys, these alloys are not prone to delayed cold cracking.
