Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • 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.

Students Click Here

303 Vs 304L

303 Vs 304L

303 Vs 304L

in our application, 304L component is press-fitted to 303 component (as insert and sleeve). Recently, our supplier unintentially used 303 for both components, huge amount of products have been made, business wants to assess the impact before scrap.

my concern would be steel galling? but can't tell whether it will be worse or the same with supplier's mistake.

any guidence??
Corrosion is not issue here
304L component requires Rmax 8 surface finish (any impact on surface finish?)
Our supplier has performed testing and dimensional check and all positive, but should I trust them?

RE: 303 Vs 304L

303 being free machining is easier to cut but harder to get a really good surface, I'd be surprised at an Rmax of 8 unless there are special finishing steps.  303 & 304 are so similar (and prone to galling) that I doubt you will see any difference.  Are the parts lubricated prior to press fit?  Good high pressure lubricants will prevent galling.

RE: 303 Vs 304L

I agree with dgallup there likely won't be much difference.  Just make sure the parts are finished to the correct roughness.

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.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


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
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’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:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close