No it is not tempered glass, its a silicone material, military grade, super strong. I am not a fan of temprerd glass, nor have I ever ownd a tempered glass protector.
I have had every single Galaxy since the first Galaxy S and it took 8 devies for me to finally crack a screen (which was on my S8) only because I had my S9 so I started to protect that device more then my S8 and it dropped, and cracked on the corner.
The Ghost Armor I had on my S9 was getting quite a beating as my cat would always puncture his nails on my phone, and some of the scratches looks really deep.
When I replaced my ghost armor with a new one (lifetime warranty) I was surprised the screen was still in mint condition.