Stainless Steel for Melonite Process
Stainless Steel for Melonite Process
(OP)
I would like to have some small investment castings Melonited (nitrocarburized). The foundry can make castings in any metal pretty easily. I am looking for a 55RC part that has decent impact strength and will take to the melonite process. The 55 RC should not degrade after processing (1075F).
Does anyone have experience in this area? Any stainless steel suggestions?
TIA
Does anyone have experience in this area? Any stainless steel suggestions?
TIA
RE: Stainless Steel for Melonite Process
You will have a much higher surface hardness than Rc 55.
I have used it for enhancing the wear properties in highly abrasive flow conditions.
I have use it also for treating stainless steel in pumps and rotating process equipment where there is possibility of incidental contact.
We have found that there is a loss of corrosion resistance in some of our highly oxidizing environments, i.e. HNO3. I have seen no problems in other environments like steam, water, or any organics
If you could comeback with the end use it might help with the selection of the SS.
RE: Stainless Steel for Melonite Process
We are currently using 8620 with a .030 case at 60 RC. This works well but the Melonite will provide better scuffing resistance and make the part more ascetically pleasing with its nice black color (and save us a finishing step)
RE: Stainless Steel for Melonite Process
As I think about it I don't know of any grade that you can age or temper at 1075F and end up with 44Rc, except a hot work tool steel like H19. You wouldn't have much corrosion resistance, but it would be hard as hell.
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm