42CrMo4 is an alloy structural steel, according to EN 10083/1-1991, also known as 1.7225.
42CrMo4 alloy structural steel has high strength, high hardenability, excellent toughness, deformation smile during quenching, and has high creep strength and lasting strength at high temperatures.
The comparison relationship between 42CrMo4 alloy structural steel and steel numbers in various countries is as follows: Corresponding to the Chinese GB standard is 42CRMO alloy structural steel, corresponding to the American AISI standard is 4140 alloy structural steel or 4142 alloy structural steel, corresponding to the British BS standard is 708M40 alloy structural steel /708A42 alloy structural steel /709M40 alloy structural steel, The corresponding French NF standard is 40CD4 alloy structural steel /42CD4 alloy structural steel, the corresponding Japanese JIS standard is SCM4 alloy structural steel, the corresponding international ISO standard is 683 alloy structural steel /13, and the corresponding Russian OCT standard is 38XM alloy structural steel.
42CrMo4 alloy structural steel is mainly used to make forgings with high strength and larger tempered cross sections, which require properties that cannot be achieved by 35CRMO alloy structural steel. At the same time, such as the large gear for car traction, supercharger transmission gear, rear shaft, connecting rod and spring clamp with great load, 42CrMo4 alloy structural steel is also applicable, it can also be used for 2000m oil deep well drill pipe joints and fishing tools.
