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Yield strength vs. Temperature

Yield strength vs. Temperature

Yield strength vs. Temperature

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I am skeptical as they do not cite where this data comes form, but it seems to indicate "structural steel" has about 75% of its original strength at 800F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

RE: Yield strength vs. Temperature

(OP)
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.

RE: Yield strength vs. Temperature

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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