Which Hardened valve seat?

[451Mopar]

After reading the "Hardened valve seat thread", my question is what brand, material, and hardness seats are used in a performance engine.
Keeping it limited to gasoline fuel, and stainless steel valves, not Titanium or Inconel or stellite.
I'm curious on how good the powered metal inserts are?

 

[diesel_lv]

I've got a turbo 4.6 4v Ford in my jet boat. Stock valve seats, just the exhaust valves were changed to handle the heat.

 

[wyrmrider]

451 I use the best dura bond powder metal a little tougher to machine but worth it

 

[451Mopar]

Well I got a 6.1L Gen III for a different project, and was looking at the Durabond Killer Bee valve seats. maybe in the future adding turbos to it?
Think

451 I use the best dura bond powder metal a little tougher to machine but worth it

This is what I was looking at:

https://www.dura-bondbearing.com/wp-content/uploads/2018/10/Hemi-Engine-Parts-Guide-1.pdf

 

[Daves69]

451 I use the best dura bond powder metal a little tougher to machine but worth it

You're pressing your own seats? Are they sinter hardened like DH5 or heat treated after sinter? What PM press are you using? Cincinnati, BLH, Stokes, Dorst, Yosh, or....?

 

[451Mopar]

No, I have Dave Sarno at SCH Racing do my cylinder heads.
http://schracingheads.net/

Found him when I needed my B-1 B/S heads welded and repaired after dropping a valve many years ago.
Not a Mopar guy, so he found it interesting when we milled the rocker stands off the Victor MW heads to install the MW rocker stand blocks.