Hot Working of 25CrMo4 Steel with Tellurium Additions

[jimsan]

Tellurium is added to steels to modify the inclusions and improve machinability.
Does anyone have any experience of hot working such materials (25CrMo4 for example) and experienced cracking problems?

 

[Goahead]

Tellurium improves the machinability of copper and stainless steel. 25CrMo4 is normally machinable.

http://www.welding-advisers.com/

 

[yates]

We regularly hot-head 25CrMo4 bolt heads with no cracking, but I didn't know Tellurium was an element added deliberately. To what spec ?