The process we use is. First wrap the parts in stainless steel and make sure it is air tight then in to the 1500'f oven for one hour and then oil quenched then two hours at 550'f and air cool. this process reliably produces a hardness of 49-50 roc which is inside of our specs. the only thing...
hi every one i was told that 4140 should never be used past a hardness of 42 Rockwell max is this true? we have been using this matrial at 48-52roc for quite awhile and havent had a problem till reciently the pieces just shattered with not much force and this particular part could cause some...
first of all thanks for the tips and comments they are greatly appreceated, secondly our process for heat treating are as such 1)parts are placed in stanless steel bags and sealed then we put them in the oven at 1550'f for one hour then the bags are cut open and oil quenched, after they are...
Hi every one i am relativly new to this sight and to heat treating my question to all of you is this... Can you reverse the heat treating process I am heat treating parts made from 4140 steel using a oven some parts that i do come out just a tad softer than the requirements that are in place for...
