4140 heat treatment
A： What we want to share today is the information about 4140 steel’s heat treatment.
B：4140 steel responds readily to heat treatment and is comparatively easy to machine in heat-treated conditions.
A：4140 steel resists creep in temperatures up to 845° C and maintains its properties even after long exposure at these relatively high working temperatures.
B： After heat treatment, 4140 steel’s hardness is 54 to 59 HRC.
A： Heat Treatment 4140 alloy steel is heated at 845°C followed by quenching in oil.
B： Before hardening, it can be normalized by heating it at 913°C for a long period of time, followed by air cooling.
A： The following is about the prehardened 4140 steel’s flame harden.
B：4140 steel is a 1% chromium-molybdenum medium hardenability general purpose high tensile steel.
A： It has generally supplied hardened and tempered in the tensile range of 850 – 1000 Mpa.
B： After Pre hardened and tempered, 4140 steel can be further surface hardened by flame or induction hardening and by nitriding.
A： By the way, for 4140 steel, we can supply the round bar, steel flat bar, and plate.
B： Rectangular pieces can be cut from flat bar or plate to your specific sizes.
A： If you want to know more, you can visit our website：www.otaisteel.com
B： You can also send an email or call us.
Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.
