Magnetic Property of Austenitic Stainless Steel
Magnetic Property of Austenitic Stainless Steel
(OP)
If we found magnetic property at austenitic stainless steel after use at high temperature in pressure vessel...
- Are there detrimental effects in mechanical and corrosion resistant properties?
- What is the recommended inspection method for further analysis?
Please comment.
- Are there detrimental effects in mechanical and corrosion resistant properties?
- What is the recommended inspection method for further analysis?
Please comment.





RE: Magnetic Property of Austenitic Stainless Steel
In general austenitics can experience precipitation of chromium carbide in the temp range of 400C to 800C and sigma phase precipitation in the range of 600C to 900C. Both of these cause loss of mechanical properties and decreased corrosion resistance. The susceptibilty increases as the alloy content of the steel increases.
RE: Magnetic Property of Austenitic Stainless Steel
I also worry about sigma phase. Do you have any comments about inspection method?
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
You're going to need some more definitive experimental technique before you rewrite the theory of corrosion for stainless.
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
The annealed sample, on the other hand, was thoroughly passivated before being immersed in the chlorox.
Try this experiment. Take the "ballized" sample and passivate it in plain water and then put it in chlorox. It should then show a much reduced reactivity that wouldn't have been explainable by martensite corroding in the water.
RE: Magnetic Property of Austenitic Stainless Steel
RE: Magnetic Property of Austenitic Stainless Steel
We make a vary wide variety of stainless grade and some are sold annealed or underannealed*. From our salt spray test I can say that the corrosion resistance of the underannealed material is lower than it's annealed chemical twin. So the state of a s/s will also influence its corrosion resistance properties.
* so the material is left with some higher mechanical properties