4135/4140/4142/6150 Alloy Coil EN10083-3 DescriptionThere are steel types 50CrMo4, 51CrV4, 20MnB5, 34CrMo4, 42CrMo4, and 27MnCrB5-2. EN 10083-3 steel coilhas high strength, high toughness and good hardenability. This alloy requires high-temperature preheating before welding to reli