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Ion Nitrite
2

Ion Nitrite

Ion Nitrite

(OP)
Hello guys,

I am in the middle of a design process and cannot answer this question, hopefully someone can shed some light on the issue?


Our vendor has come back to us with a question regarding the thickness of Ion Nitrite for a part. We currently do not specify a thickness when specifying Ion Nitrite. The part is made of 410 SS heated treated to 18-22 HRC. Could anyone please take a moment to answer some questions and enlighten us on this process?

 

- What is a typical thickness use?

- What other thicknesses are used?

- Are there any advantages and disadvantages to using those thicknesses?

- What process does one need to go about in order to determine the necessary thickness when specifying Ion Nitrite of a part?


Thank you for your time,
 

RE: Ion Nitrite

In my experience, .005" to .010" is a common thickness range for ion nitriding. It all depends on what you are trying to do. What is your application?

RE: Ion Nitrite

(OP)
Thanks for the respond. I am in the Petroleum Industry, with emphasis in ESP applications. In a nutshell, we supply the Electrical Submersible Pump, with electricity. You can think of our parts pretty much as hollow pipes which holds cables/conductors inside of them.

RE: Ion Nitrite

mrconfident

The nitride is a case depth and is not a coat.
it will penetrate into the parent material.
there will be a light build up but not much.

as swall said is good recommendation
except I would suggest .005 min after any machining
on that surface, or if it's finished before nitride.
410 SS will nitride but not deep.

check out AMS 2759/8 as guide.

be aware if it's selective Ion Nitride. It will require tooling.
if it's nitride all over no tooling required except for racking.

 

RE: Ion Nitrite

(OP)
mfenggear

Thank you for the enlightenment. I did not know this, I thought that Ion Nitride was a process similar to Zinc Plating on alloy steel parts.

With that said, is there anything else that needs to be specify when a part needs to be Ion Nitride? It sounds like the vendor doesn't know what their talking about if they're asking for a thickness....?

Please elaborate.

Thank you  

RE: Ion Nitrite

mrconfident, you will definitely appreciate more about surface treatments after referring to the book  mentioned below.Hope you will like it and find it useful.


"Practical nitriding and ferritic nitrocarburizing / David Pye
p. cm.
Includes bibliographical references and index.
1. Nitriding. 2. Case hardening. 3. Steel—Heat treatment. I. Title.
TN752.C3P4 2003
671.3'6—dc21
2003056298
ISBN: 0-87170-791-8
SAN: 204-7586
ASM International®
Materials Park, OH 44073-0002
www.asminternational.org
 

I have not failed. I've just found 10,000 ways that won't work." — Thomas Edison
_____________________________________
 

RE: Ion Nitrite

Normally specified is follows

specify the applicable spec (commercial or aerospace)
specify if all over or specific area (Bearing surface or gear teeth)

The effective or total case depth~ (.005 min)

the case hardness ~ (15N 89 Min)
 
the core hardness ~ 24 HRc
(specify core hardness so the tempering temp. is above the nitride process temp.) "temper at 1100
for 410 ss " ref
 

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