31. Rust is a form of corrosion that affects ferrous metals like iron and steel. 32. Induction stove tops require flat-bottomed pans made of ferrous metals . 33. Non-ferrous metal , brokerage, and shipping shares were also big gainers. 34. When ferrous metals cool after melting, they record the magnetic dominance at that moment. 35. Protective tariffs on textiles, clothes, ferrous metals , chemical products and electric bulbs will remain. 36. There are several kinds of non-ferrous metal that have been used by ancient people. 37. Whilst on the conveyor, a magnet removes ferrous metal from the ash for recycling. 38. Almost all the scientific work on supercooling metal has involved ferrous metals , steel mostly. 39. Many ferrous metal castings are sized to sharpen corners and flatten holes around piercings. 40. Mining and non ferrous metal issues were also strong, following gold prices higher, traders said.
