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Molecular formula : MW : CAS :
nature : also known as high-strength cast iron. Contain spherical graphite cast iron. The mechanical properties far superior to gray iron and steel closer. Excellent casting, machining and wear resistance, a certain aseismatic and greater flexibility. Widely used in the manufacture of the crankshaft, piston, roll casting and other senior various machine parts. General cerium or magnesium alloy or agent for the ball and ferrosilicon Mexican agent and joined the molten iron in the system. Brands with QT (Qiu Tie the initials), to be behind b minimum tensile strength and elongation at the lowest figures δ said. For example, said that QT 45-5 σ b �45 kg of force / mm 2 (440 cattle / mm 2) and δ �5% of ductile iron.
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