×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# Thickness change from annealed to full hard?

## Thickness change from annealed to full hard?

(OP)
Hi,

If I were to buy some annealed stainless steel and then cold roll it harder how would the thickness change?

What I want to end up with is 0.2mm stainless that is 2000N/mm2 hardness. So would I buy for example 0.4mm annealed?

Thanks,

Ant.

### RE: Thickness change from annealed to full hard?

Depends on how much cold work you want to do.  But yes, you will need to start thicker and have it rolled.  You are going to need a specialist to do it.

http://www.ulbrich.com/index.php/design/design/page/rolling_annealing.html

----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

### RE: Thickness change from annealed to full hard?

You can find cold work curves for most materials in data sheets.
Often you are looking at 40-60% reduction in thickness to reach maximum hardness.

You do know that some of the PH grades can be made in the CH condition, where they are cold worked and then aged without annealing.  You get some added strength from the cold worked condition.  Look at 17-7PH.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

### RE: Thickness change from annealed to full hard?

(OP)
I'll look for a datasheet, roughly speaking then I could buy 0.4mm 17-4PH annealed with hardness of 1000N/mm2 and any regular cold working to 0.2mm will get the hardness to approximately 1800N/mm2 (give or take a lot). It looks like a useful rule of thumb and sounds about right. I didn't know about 17-7PH, I'll take a look.

I wish I'd seen Ulbrich's online shop a couple of months ago. Seeing that was a revelation and a pleasant change from the prices I've had recently. I will call them, there isn't any PH stainless in the online shop but the prices give me confidence a special order wouldn't be too expensive.

Thanks.

Ant.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

#### Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a partâ€™s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!