42CrMo steel material is chromium-molybdenun alloy steel, and 42CrMo steel can be heated by various methods to yield a wide range of properties. 42CrMo steel material is capable of resisting creep in temperatures up to 538°C [1000°F] and maintaining its properties even after long exposure at comparatively high working temperatures.
42CrMo steel material has good machinability. It is adaptable to various processing such as drilling, sawing, broaching, tapping and milling, etc.
But 42CrMo steel material is not easy to weld. The 42CrMo steel is not recommended to be welded under quenching and tempering (QT) state. Because it will change the 42CrMo steel echanical properties within the weld heat affected zone. The 42CrMo steel material is preferred to be welded in the annealed condition. However, if the 42CrMo steel welding in quenching and tempering state is required, the workpiece must be cooled instantly and the stress is relieved at 15°C below the original tempering temperature.
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