Some austenitic stainless steels and nickel-based alloys are prone to intergranular corrosion. These processes are common to high alloy special steels, super alloys and titanium alloys. These processes are common to high-alloy special steels, superalloys and titanium alloys. Monel 502 can be machined similar to austenitic stainless steels. Typical passive film thickness on aluminium, stainless steels, and alloys is within 10 nanometers. Cookware is made of austenitic stainless steels, which are more stable. Japanese stainless steels, manufactured by Takefu Special Steel. Brass, bronze, gunmetal, cast iron, steel, alloy steels and stainless steels are very common. They are used in the production of steels and alloys. Weight reduction of 10% is achieved by using very high-strength steels and aluminum alloys. Metals that are cast at higher temperatures require dies made from higher alloy steels. They cannot be strengthened by cold work to the same degree as austenitic stainless steels. This limits the use of cold-worked austenitic stainless steels. Martensitic and ferritic stainless steels are magnetic. Daido stainless tool steels used for kitchen knives and scissors.