Which type of stainless steel has a higher chromium content and added nickel?

The correct choice is austenitic stainless steel, which is characterized by its higher chromium content and the addition of nickel.

Austenitic stainless steel typically contains at least 16% chromium and 6% nickel, which enhances its corrosion resistance and ability to withstand various temperatures. This type of stainless steel is known for its excellent mechanical properties and is non-magnetic, making it suitable for a wide range of applications, including kitchen equipment, chemical processing, and food processing. The presence of nickel not only increases corrosion resistance but also improves the toughness and ductility of the steel.

In contrast, ferritic stainless steel, while it also contains chromium, does not have the same level of nickel. Ferritic steels tend to be more magnetic and are generally less ductile than austenitic types. The basic grade and low-grade options typically refer to other classifications that do not encompass the higher chromium and nickel content characteristic of austenitic stainless steels.