Hot Tensile Test of ASTM A182 (F51)

[Shaw123]

Hi all,
Does anyone know why there would be a dip in a high temperature (190 deg C) tensile test of an F51 stainless steel? The room temperature tensile test is as expected but the high temperature tensile test a lot is lower than expected.
Any ideas?

 

[metengr]

Could you post the RT and elevated temperature data?

 

[Shaw123]

RT : 75 KSI (.2% Yeild)
RT : 103 KSI (UTS)

Elevated temp: 54 KSI (.2% Yeild)
Elevated temp: 86 KSI (UTS)
Elevated temperature = 190 deg C

 

[metengr]

Shaw123;
The F51 stainless steel is a Duplex 2205. From the literature I have seen for this duplex ss at room temperature and at 200 deg C, the following properties are published;

RT

UTS ~92-121 Ksi
0.2% YS 67 Ksi min


200 deg C

UTS ~ 80 Ksi

0.2% YS ~ 46 Ksi

 

[Shaw123]

Thank you metengr,

Its good to know that my data is consistent with the literature.

The worry I have is the elevated temperature UTS. I would normally be expecting 88 Ksi.

 

[sayee1]

The worry I have is the elevated temperature UTS. I would normally be expecting 88 Ksi.
On what basis ar you expecting 88 ksi? Is this for the base material or weld?

Thanks and regards
Sayee Prasad R
Ph: 0097143968906
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email: sayee_prasad@yahoo.com
If it moves, train it...if it doesn't move, calibrate it...if it isn't written down, it never happened!