Perkerizing D2 ??

[galadduin]

I have an order of a Nessmuk out of D2, customer wants it to be black-ish...

I did learn how to Parkerize steel with phosphoric acid + Manganese oxide solution. Also I know it is not applicable to stainless steel. I want to know if parkerizing will work on D2 or not. It is not an SS, also it is sensitive acids compared to real stainless steels...


Thanks..

Emre

 

[tomh]

It will not take parkerizing, before heat treat it will get somewhat gray, but after heat treating, nothing happens. If you figure out a way to get it to work, let me know!

I have only used Black Gunkote on D2

 

[galadduin]

Thanks Tom, your input is greatly appreciated. I was ordering phosphoric acid then I saw your reply just in time to cancel the order...
I think I will sandblast and FeCl etching will be my way to go...

 

[tomh]

I will have to try blasting with the ferric. I think I may have tried ferric with out blasting and it did not touch the D2 to darken it. Good luck and post pictures of the result!

 

[P.Brewster]

On the subject, I have 1075 from McMaster Carr that will not take a Ferric etch. I process W1 and 1075 the same (except for tempering); the W1 becomes near-black, the 1075 near-nothing.

"Tool Black" (copper selenium deposit coating; AKA Caswells "Black Oxide"; AKA "cold black oxide") seems to work on everything - it will probably work on D2.