4140 steel Machining

A： What we want to share today is the information about 4140 steel Machining.

B：4140 steel cold roll is a popular general-purpose alloy, ideal for parts that require high tensile strength and toughness.

A： It has considerable atmospheric corrosion and wear resistance, and will not become brittle. 4140 has a machining cost factor of 2.9 when compared to steel 12L14.

B： With the advancement in cutting tool materials and machine tools, today, machining of hardened steel having hardness up to 45 HRC is considered under soft machining.

A：And machining of hardened steels having hardness in the range of 45–65 HRC is considered under hard machining.

B： Besides, 4140 can certainly be cut with HSS. The secret to success with higher carbon steels is to avoid problems with work hardening.

A： To make real cuts, not skim passes, with feeds that get under the hardened surface of the previous cut, both in-depth of cut and in longitudinal feed rate.

B： Please remember that 4140 pre-hard is not difficult to machine, similar to A-2. The surface finish is not that great in 4140 pre-hard unless it is ground.

B： By the way, for 4140 steel, we can supply the round bar, steel flat bar, and plate.

A： Rectangular pieces can be cut from flat bar or plate to your specific sizes.

B： If you want to know more, you can visit our website：www.otaisteel.com

A： 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.