H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
- Oct 31, 2015
Hello out there in Hobby Machinist land. I recently had the good fortune to acquire a Kerr Insultherm 900 electric kiln for my shop. The unit will heat up to 2000 F and has a 7 x 7 x 11 inch capacity. It will work nicely for preheating some mechanical assemblies that go together with a bit of hot and cold. I am also thinking that it would be good to heating 17-4PH SS to the H900 condition. 17-4ph at H900 has a hardness of about 45Rc and is pretty tough, ie, a good material for tools etc. What I am wondering is what can be used to prevent oxidation scale on the material during heat treating. The stainless steel foil can be a bit expensive for a hobby shop. Any ideas out there? Can I use borax on SS?