At what levels do the various types of armour start to appear in Skyrim?

I was wondering at what levels do the various types of armour start to appear?

For instance right at the beginning hide/studded is the more prevalent armor type (from memory) However I'm now level 18 and starting to see bits of Elven armour creep in to bandit chief loot, etc.

Solution 1:

Copied from another post:

The full Heavy Armor progression is (with very rough levels):

• Iron (lv 1)
• Steel (lv 6)
• Dwarven (lv 12)
• Steel Plate (lv 18)
• Orcish (lv 25)
• Ebony (lv 32)
• Dragonplate (lv 40)
• Daedric (lv 48)

The full Light Armor progression is (with very rough levels):

• Hide (lv 1)
• Leather (lv 6)
• Elven (lv 12)
• Scaled (lv 27)
• Glass (lv 36)
• Dragonscale (lv 48)

Clothing doesn't progress, rather the enchantments get more powerful as your level increases.

Source: this answer by Cloudancer