-- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing.
    no popups, no spam
on this site
current topics

topic 1570

Hot Black Oxide on AISI H10 (5% chrome) material


I would be grateful for any advise on how to achieve a good deep lustre Black on AISI H10 material (5% chrome) that has been heat treated to 45-46 Hrc.

I am currently using a hot blacking line utilising salts at 150 deg C but the results are poor.

The pre cleaning includes a light sand blast followed by an alkali degrease. All of my other materials AISI 4340 black sucsessfully.


Des Burnett
- Stellram

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.