DBTT-Ductile Brittle transition temperature 2 1/4 Cr-1 Mo -P22/F22 Chrome moly material

[deepu78]

Have a query.
What is the DBTT-Ductile Brittle transition temperature for 2 1/4 Cr-1 Mo -P22/F22 chrome moly material?
Is there a formula for calculating this DBTT?
Is this DBTT valve fixed for all 2 1/4 Cr-1 Mo -P22/F22 chrome moly material?
Is there a chart available in ASTM / other standards?
DV

 

[mfgenggear]

What AMS material standard? Or any spec

 

[deepu78]

What AMS standard? Or any spec

Any standard or specification where DBTT for materials specified

 

[SWComposites]

What is the DBTT-Ductile Brittle transition temperature for 2 1/4 Cr-1 Mo -P22/F22 chrome moly material?

typing that into Google gives a temperature. and some discussion, and reference papers.

Is there a chart available in ASTM / other standards?

purchase the applicable standards and review them.

 

[deepu78]

typing that into Google gives a temperature. and some discussion, and reference papers.


purchase the applicable standards and review them.

 

[deepu78]

I googled before posting here, but couldn't get.
Standard Which one? I checked ASME SA-335 but not available there.

 

[mfgenggear]

This may be helpful

 

[mfgenggear]

And this

 

[weldstan]

The DBTT for 2 1/4 Cr - 1Mo is all over the map depending on chemistry (control of C and residual elements), fine grain or coarse grain melting practice and heat treatment. It can range from around room temp to -40C.

 

[weldstan]

And I forgot to mention product form (forged, rolled etc.) and thickness.