Yield strength vs. Temperature

[perkwunos]

I am looking to find the yield strength of a few alloys at elevated temperature 800F.

I found the following link

http://www.engineeringtoolbox.com/metal-temperature-strength-d_1353.html

I am skeptical as they do not cite where this data comes form, but it seems to indicate "structural steel" has about 75% of its original strength at 800F

Alloys I would like to know the strength at 800F for
4140
1026
1023
St52.3

 

[cloa]

Why don't you search Matweb-

http://www.matweb.com?

It has direct from manufacturers information.

http://www.eng-tips.com/threadminder.cfm?pid=1529

Use translation assistance for Engineers forum

Note the rules include No Student posting

 

[perkwunos]

I did allot of looking on matweb, unless i am not doing ti right, I could not find this type of information for any of the materials I had specified.

 

[EdStainless]

1. Look in the ASME B&PV Code, they have strength vs temp data
2. ASM publishes High-Temperature Property Data: Ferrous Alloys, ISBN:0-87170-243-6

For the 4140 you need to know the tempering temperature, higher strength conditions will loose more strength (%).

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