How Many C4 for a Sheet Metal Door?
1 C4
1 C4 destroys a Sheet Metal Door (250 HP) from the hard side. That's 2,200 sulfur once you count the gunpowder, and about 10s to place.
Explosive 5.56 Ammo is cheaper for this.
63× Explosive 5.56 Ammo costs 1,575 sulfur against 2,200 for 1 C4 — a difference of 625 sulfur per sheet metal door. If you've already got the c4, use them; if you're farming from scratch, don't.
What 1 C4 costs
These are full craft costs — the sulfur figure includes everything that goes into the gunpowder, which is why it's bigger than the recipe on the item page suggests. Sulfur is the number that actually matters, because it's the thing you farm.
Every way to break a Sheet Metal Door
| Method | Qty | Sulfur | Time |
|---|---|---|---|
| Explosive 5.56 Ammocheapest | 63 | 1,575 | 19s |
| Propane Explosive Bomb | 2 | 1,800 | 12s |
| Satchel Charge | 4 | 1,920 | 32s |
| Beancan Grenade | 18 | 2,160 | 1m 48s |
| Timed Explosive Chargethis page | 1 | 2,200 | 10s |
| High Velocity Rocket | 11 | 2,200 | 2m 12s |
| Rocket | 2 | 2,800 | 10s |
| F1 Grenade | 50 | 3,000 | 11m 40s |
Other ways to raid a Sheet Metal Door
C4 against other targets
Frequently Asked Questions
How many C4 for a Sheet Metal Door in Rust?expand_more
1 C4 to destroy a Sheet Metal Door from the hard side — that's 2,200 sulfur once you count the full gunpowder chain.
Are C4 the cheapest way to raid a Sheet Metal Door?expand_more
No. Explosive 5.56 Ammo is cheaper on sulfur for this target — 63× costs 1,575 sulfur versus 2,200 for 1 C4. That said, cheapest isn't always right: C4 may be faster to place or already in your base, and sulfur you've already farmed is a sunk cost.
How much sulfur is 1 C4?expand_more
2,200 sulfur, plus 3,000 charcoal and 200 metal fragments. That's the full craft cost including the gunpowder each C4 needs, not just the final recipe.
How long does it take to raid a Sheet Metal Door with C4?expand_more
About 10s of placement time for 1 — that's the deploy time, not the farming. The farming is the real cost, and it's why people check this number before they commit.
Amounts come from the same sourced raid chart as our raid calculator and every /raid/ page, so they can't disagree with each other — verified for the July 2026 wipe. Deployables and external walls are approximate; always test on your own server build. Sulfur includes the full gunpowder chain.
Related guides
A real player's Rust raid guide: exact sulfur costs per structure, C4 vs rockets vs satchels vs eco raiding, online/offline tactics and defence.
A no-BS Rust base design guide: building tiers, upkeep, tool cupboards, bunkers, airlocks and honeycomb, plus the raid costs that actually matter.
The best Rust scrap farming sources ranked: recycling, road barrels, monument crates, diving crates, cargo and oil rig. Plus a fastest-scrap early routine.