High alloy steel grade

[mali325]

Dear group,
I have steel grade with following composition:
%c=0.13
%Mn=0.60
%Ni=4.9
%Ti=0.60
%Si=0.50
%Cr=21.0
%S=0.01

what is reason for adding Ti to this steel grade?
Best Regards

 

[metengr]

Based on the Cr/Ni contents, your stated composition looks more like a fit with a duplex stainless steel casting. Do you have the specification for this alloy? Deliberate additions of Ti can serve several functions in alloys, as a deoxidizer, or as a strengthener for precipitation hardening capability and/or stabilizer to form TiC instead of harmful chromium carbides.

Can you provide more information as to your use of this alloy?

 

[CoryPad]

Internal combustion engine exhaust valves sometimes are made with 21-4 steel.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[mali325]

Chemical composition is for 12Ch21N5T steel grade(GOST 5632).Unfortunately I have not GOST standard.

 

[rorschach]

this looks a lot like SAF 2205 without the Mo and the N but with higher C