Shadowlands
Dungeon Guide

The item level of dropped gear depends on the difficulty of the dungeon and Shadowlands will not contain Warforging or Titanforging.

To queue for Heroic Dungeons through the Dungeon Finder, you must be a certain item level (157), but you can walk in with a premade group at any point.  

Torghast is a different type of dungeon.  It can only be unlocked at level 60, following a short questline, and offers an ever changing dungeon for between 1 and 5 players.  The further you get through it, the greater the challenges.

Level Requirements: