Which metal is ferrous and does not rust, commonly used for cutlery and sinks?

Which metal is ferrous and does not rust, commonly used for cutlery and sinks?

• A. Cast iron
• B. Stainless steel
• C. Mild steel
• D. Copper

Answer: (B)

Metal that contains iron and resists rust is stainless steel. It achieves this by adding chromium, usually around 10.5% or more, which forms a protective chromium oxide layer on the surface. This passive film stops iron from rusting and gives stainless steel its durability, plus a hygienic, easy-to-clean finish—why it’s so popular for cutlery and sinks. Cast iron and mild steel are iron-rich but corrode more readily unless specially protected, so they aren’t as suitable for those uses. Copper isn’t ferrous, so it doesn’t rust, though it has different properties.

Metal that contains iron and resists rust is stainless steel. It achieves this by adding chromium, usually around 10.5% or more, which forms a protective chromium oxide layer on the surface. This passive film stops iron from rusting and gives stainless steel its durability, plus a hygienic, easy-to-clean finish—why it’s so popular for cutlery and sinks. Cast iron and mild steel are iron-rich but corrode more readily unless specially protected, so they aren’t as suitable for those uses. Copper isn’t ferrous, so it doesn’t rust, though it has different properties.