×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Chemical Analysis Variation......

Chemical Analysis Variation......

Chemical Analysis Variation......

(OP)
During the chemical analysis of CF3M (final sample from melt) am getting Carbon - 0.025%. But after 2 or 3 weeks to ensure the same if I sparked the sample am getting +/- 0.002 - 0.004% variation. Is this variation is allowed for all type of steel samples and any standards for the same.

RE: Chemical Analysis Variation......

By OE this about as good as you can get.
What results are your getting on your reference standard?

If you really care about C you should do it by combustion anyway.

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

RE: Chemical Analysis Variation......

Your value of Carbon analysis is normal. The standardization of the OES for the day is important. Though you are safe, I would like to see Carbon around 0.02-0.025% as in your case, you are dangerously close to 0.03%.
As suggested by Ed, always confirm Carbon using combustion method.

I'm just one step away from being rich, all I need now is money.
( read somewhere on the internet)

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!


Resources