What is the Hardness of 4140 Plate? Well, it depends on the different condition of 4140 plate you need.

Steel plate 4140 PH (Q+T) condition goes with 28~32HRC hardness usually.

Annealed 4140 plate (A) is with hardness less than 241 HB. It’s easy to do further cut or machining.

4140 plate As Rolled (HR) has not even hardness. It varies from one batch to another batch. But it’s the best to do further heat treatment according to different customer request.

You please tell us your detailed request, we will offer you the right materials and deliver to you very quickly.