4140 is an alloy steel that is supplied in either the annealed or prehardened condition. The prehardened condition is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT. 4140 annealed is supplied in the soft condition and can be hardened to RC 54. 4140 annealed is designated as 4140 Ann or simply 4140. 4140 HT is supplied in many forms such as hot rolled or turned, ground and polished rounds and block or DCF plate to be used as a holder material for high strength structural components.
The complete data sheet along with many other data sheets, charts, properties and heat treating procedures can be found in our new book.
You can find all of the answers to your tool steel questions in our comprehensive book "Tool Steel Simplified". This concise book includes tool steel properties, alloying elements, uses, careers, data sheets, heat treating and so much more. It is written is an easy-to-understand format for designers, engineers, buyers, students, production planners and anyone that is interested in learning more about tool steel.
You have questions and you want answers. The answers to your tool steel questions are found in “Tool Steel Simplified”.
You will receive 226 pages of valuable tool steel information providing you with the resources necessary to produce high-quality tooling for your application.
Click here to get your copy