4140 quenched & tempered qt steel round bar

4140 quenched & tempered qt steel round bar 4140 steel is a king of Chromium-Molybdenum steel material with medium hardenability. It is a general purpose high-tensile steel with medium strength level and good impact properties. As a special steel bar factory, we can produce 4140 steel round bar, 4140 square bar, 4140 flat bar, 4140 hexagonal steel bar. We can also supply different delivery condition of 4140 steel bars such as 4140 hot rolled steel bar, 4140 cold drawn steel bar, 4140 peeled steel bar, 4140 turned steel bar, 4140 centerless ground and polished steel bar as well as 4140 annealed steel bar, 4140 normalized steel bar, 4140 quenched and tempered steel bar, that is to say, 4140 qt steel bar or 4140 q&t steel bar. After heat treated especially quenching and tempering, 4140 steel bar can be get high tensile strength, high yield strength and high hardness. It is widely used in producing high strength components, shafts, bolts,…

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