About X10CrMoVNb9-1 (EN 10222-2 )

[Raaden]

Hi!
My question is short and simple: To what material group does X10CrMoVNb9-1 belong.
The material is not listed in either EN-1092-1, ISO-7005-1 or prEN-12516-1 so if someone has any bright ideas, I would apreciate the help

Thanks

Pontus

 

[NickE]

looks like a high alloy stabilized grade of stainless steel.

Other than that I'm of no help.



Nick
I love materials science!

 

[TVP]

The standard EN 10222-2 is entitled Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels with specified elevated temperature properties. Grade X10CrMoVNb9-1 would be considered a high alloy steel, not a stainless steel, since the Cr content is only 8-9.5% The microstructure that develops upon normalizing is a mixture of ferrite and bainite. The tempering operation causes fine M₂₃C₆ precipitates to nucleate on prior Nb(C,N) particles.

 

[Raaden]

Thanks, but but what I'm looking for is the actual group No. for the material.

For example:

P265GH belongs in group 3E0
13CrMo4-5 belongs in group 5E0
10CrMo9-10 belongs in group 6E0

So ewhere does X10 fit in?

 

[unclesyd]

Try prEN10028-2,Matl 1.4903; ID 3244 for plate Reg AD-W-1
1,4903; 0865 bar
Spec VdTuv 511/3

Also under CR ISO 15608: Material Gr 6.4 for forgings
EN 13445-2:2002 Issue 6
Also En10216-2

Sorry about the lack of uniformity as I am not that familiar with EN specs. This just a copying from tables with small print.

 

[richardbuss]

Hi Raaden,

The grade you mention is listed in the SEL 2000 and is WNR. 1.4903

Its also listed in the DIN EN 10302:2002:09 ann the DIN EN 10028-2:2003:09

Best Regards
Richard Buss

 

[ijzer]

The material is same as A 182 F91.
To what group it belongs can not be answered because you do not specify the purpose or Code you refere to.
E.g. for welding qualification per EN 288-3 the group will be 6.

 

[Raaden]

The material group I'm looking for is the "EN-version" of the material groups found in ASME B16.5 & ASME B16.34.
As I mentioned in my original post, X10 is not listed in either EN-1092-1 or prEN-12516-1 (which are the ASME counterparts)

 

[arnoldh]

try

http://www.stahl-online.de/stahl_zentrum/wavchangesdin.pdf