×
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

Material properties at high temperature

Material properties at high temperature

Material properties at high temperature

(OP)
Hello. I'm designing a damper (low pressure valve not covered by the pressure equipment directive) for 400 ºC. The material is standard S275JR, low carbon steel. Now i'm having a problem, there's no "official" data for this material at that temperature. I've seen two references:
- Eurocode for steel structures, fire design, tells that at 400 ºC the yield strentgh if 0,42 the one at room temperature.
- Pressure equipment directive says that for steels with no data guarantee at high temperatures the yield stentgh at 300 ºC is 0,42 the one at room temperature. And gives no clue above 300 ºC.

On the other hand I haven't found any supplier whi gives values for this material at high temperature.

Does anyone has experience using low carbon steel at high temperature? Does anyone know why there can be this difference between norms?

Regards

RE: Material properties at high temperature

Stress-strain behaviour of carbon steel at high temperatures is essentially different from that at ambient temperature.   Test results show that carbon steel begins to lose strength at temperatures above 300°C, see link at

http://www.mace.manchester.ac.uk/project/research/structures/strucfire/materialInFire/Steel/HotRolledCarbonSteel/mechanicalProperties.htm

The S275 steel retained 50% strength at a temperature of 550°C, this is consistent with literature values.

Cheers

RE: Material properties at high temperature

(OP)
Hi, thanks for the reply. Finally I used the Eurocode for steel, fire design.

thanks

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