I believe 4 c4 for armored from the outside, 2 on the inside.
This thread is archived. ... Did they buff Sheetmetal? Once a Timed Explosive Charge has been thrown, it will automatically arm itself and then detonate after 10 seconds. I think they used to burn like paper from C4.

But now apparently they are all around better than Stone? When more than 50 charges are placed, any additional charges will cause the oldest to disappear. My knowledge is a bit rusty, haven't played vanilla in forever. Notes [edit | edit source] A maximum of 50 C4 Charges can be placed at any given time. 60% Upvoted. The Timed Explosive Charge (commonly referred to as "C4") is a craftable explosive weapon that can be thrown onto walls, doors, or deployable items. is that so? Timed Explosive Charges are not to be confused with Explosives. Metal doors can be destroyed with exactly 2 C4 Charges. Also, can explosives be used by themselves or do I need to make it into c4? New comments cannot be posted and votes cannot be cast. 2 for stone on the outside, 1~ on the inside. How many C4 (timed explosive) does it take to blow down a stone wall or a metal door?
1~ for everything else. A guide how much damage C4's takes in Rust. 5 comments. —Information accurate as of: build 904.83. save hide report. share.

** IEDs are currently just about impossible to place on stone or metal.