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

The effect of HCL in gas phase on Carbon steel and Stainless steel

The effect of HCL in gas phase on Carbon steel and Stainless steel

The effect of HCL in gas phase on Carbon steel and Stainless steel


There are questions about the corrosion on carbon steel. I use carbon steel pipe A.53 and apply HCL and heat up the pipe with steam tracing 100 degree C.

1. I 'm in doubt that HCL in gas phase is it able to be the cause of corrosion or rust. There is a small steam in the pipe also.

2. The higher temperature is higher corrosion rate or not?

In our assumption is "I heat up the pipe to ensure that there is no H2O in liquid phase inside the pipe, so there is no electrolyte. No corrosion or rust.

Thank you in advance for every answers.


RE: The effect of HCL in gas phase on Carbon steel and Stainless steel

corrosion rates are exponential with temp.
If there is a riak of HCl in the vapor phase you would need to be hot enough to assure that no HCl can condense. So some temp above 109C is needed.

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

RE: The effect of HCL in gas phase on Carbon steel and Stainless steel

The HCl has to anhydrous any moisture at all will corrode both materials as stated above. In our service there is no SS equipment that can see HCl. We work directly from the tank car to a vaporizer then gas phase to the process.

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