Introduction to malleable cast iron

Malleable cast iron White cast iron is a kind of high-strength and tough cast iron obtained by graphitization annealing. It has high strength, plasticity and impact toughness, and can partially replace carbon steel. Compared with gray cast iron, malleable cast iron has better strength and plasticity, especially better low-temperature impact performance, and better wear resistance and vibration damping than ordinary carbon steel. Because of its certain plasticity and toughness, this kind of cast iron is commonly known as malleable iron, horse iron, ductile cast iron or ductile cast iron. Black heart malleable cast iron is used for shock or vibration and torsional load parts, often used in the manufacture of automobile rear axles, spring brackets, low-pressure valves, pipe joints, tool wrenches, etc. Pearlitic malleable cast iron is often used to manufacture wear-resistant parts of power machinery and agricultural machinery, and there are examples of it being used in the manufacture of automobile camshafts internationally. Whiteheart malleable irons are less commonly used due to their long malleable annealing times (see ferritic malleable irons, pearlitic malleable irons, and whiteheart malleable irons).