Does it ALWAYS take 160 coal to fuel a steel cementation furnace, regardless of the type of coal?

[Penutbro]

Like does the mechanics of the forge work off of how long its been burning for, or directly off of how much coal is consumed?
Like if I use anthracite to fuel the furnace, would I use less bits of coal compared to brown coal because it burns longer, or would it technically take longer for the steel to finish if I used anthracite?

[Maelstrom]

I haven't tested this since about 1.16 but from my tests the type of coal does not matter, it all burns at the same rate once stacked in-world.   I'm pretty sure the different burn times and temps relate to smelting ores in the crucible only.

[Zane Mordien]

I believe Maelstrom is correct. Last time I checked in 1.20 it didn't make a difference what type of coal you used to heat the furanace it all burns the same rate. I wouldn't be surprised if they changed that one day though.