Safe temperature for Stainless Steel

[Varoon]

What temperature will be considered to be safe for Austenitic Stainelss steel for continuous heating application ? If it is heated continuously/intermittently to 300 degrees centigrade, is there any metallurgical deterioration ?

 

[stanweld]

There will be somme decline in tensile properties. Design codes have taken this into account.

 

[metengr]

There is no metallurgical degradation. Once the material is cooled back to ambient temperature, the tensile properties return to original reported properties.

 

[EdStainless]

At 300C, even for very long term there will not be any metallurgical damage to any SS grade that I know of.
The strength and modulus will both be slightly lower at temp, but not much at this low of a temp.

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

 

[arunmrao]

If the temperature is just 300C, why do you need to consider expensive austenitic stainless steels. You can try some of the other alternatives.

_____________________________________
"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year

 

[jtseng123]

300C only ? I have been designing for many units using high carbon content 304H SS and continuously cooking at 730C. No one ever ask how long it will last or fail.

 

[Varoon]

Thanks for clarifying. Are the above comments applicable if temperature is 500 degrees centigrade ?

 

[arunmrao]

Varoon,this is not a Yes or No forum. It provides you guidance and you should make the final call. I think,you should exercise your discretion. Also,next time,please provide more details of your service conditions,existing practice and challenges,to make the discussion more meaningful.

_____________________________________
"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year

 

[racookpe1978]

Varoon, you've repeated this question for both 300 deg and 500 deg, for both CS and SStl in two different questions on the forum - but without any supporting details or information in either question.