No one is saying forging makes a weaker product. At least, I never made that claim. I have stated the benefits of one other the other is minimal considering all other aspects that are infinitely more important in the overall product's integrity. Looking at the extrusion tangent, the differences between those figures is on the order of 2-4%, a tiny margin that probably wouldn't make a real world difference in designing a product considering all other factors.
If you're going to call those two extruded products, finished with different techniques from the material supplier, "identical", then I have an issue with that. They are identical only in chemical composition only and not structure. As a product you buy from the supplier, they are not identical at all. If you were AS/ISO, they would be lab certified as two different materials.
You're not likely going to find forged data from the Matweb material database because material suppliers don't create forged metal stock as it would be senseless. Materials come out of mills in extruded, rolled, plate, and drawn form (maybe a few others I missed). Forging is a manufacturing process outside of the supplier to get metal stock to very specific shapes, and properties vary depending on the size, shape, and complexity of the item and where you measure the item. I just don't see why you're putting all this emphasis on forged parts.
With the AR-15, stick with forged lowers only....You want everything aluminum to be forged, on an AR. Receivers, carry handle, charging handle, front sight base, etc.
Are you serious...I have to replace my carry handle with a forged carry handle because mine is inferior enough that there will be a quantifiable difference? Unless we see a rash of milled receivers cracking and breaking under identical conditions as forged receivers, then claiming:
One which never sees anything but the range and the inside of a safe, maybe. One that's dropped, stepped on, used to bust heads, etc., may require slightly stronger materials.
has no real quantifiable merit.
I'm pretty sure my Geiselle DMR match trigger appears to be a cast investment. This whole "forged vs milled" issue has been discussed ad nauseum on -that AR forum- and there are no conclusive results either. Googling for "forged vs milled" on the internet shows mostly nothing except threads on AR lowers. Nothing in aerospace, nothing in automotive, nothing commercial, industrial, or otherwise. A couple hits on golf clubs. You know what that probably suggests? It doesn't really matter.