How Many C4 for an Armored Door?
3 C4
— or 2 from the soft side
3 C4 destroys an Armored Door (1,000 HP) from the hard side. That's 6,600 sulfur once you count the gunpowder, and about 30s to place.
Explosive 5.56 Ammo is cheaper for this.
250× Explosive 5.56 Ammo costs 6,250 sulfur against 6,600 for 3 C4 — a difference of 350 sulfur per armored door. If you've already got the c4, use them; if you're farming from scratch, don't.
What 3 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 an Armored Door
| Method | Qty | Sulfur | Time |
|---|---|---|---|
| Explosive 5.56 Ammocheapest | 250 | 6,250 | 1m 15s |
| Timed Explosive Chargethis page | 3 | 6,600 | 30s |
| Rocket | 5 | 7,000 | 25s |
| Satchel Charge | 15 | 7,200 | 2m 0s |
| Propane Explosive Bomb | 8 | 7,200 | 48s |
| Beancan Grenade | 69 | 8,280 | 6m 54s |
| High Velocity Rocket | 42 | 8,400 | 8m 24s |
| F1 Grenade | 200 | 12,000 | 46m 40s |
Other ways to raid an Armored Door
C4 against other targets
Frequently Asked Questions
How many C4 for an Armored Door in Rust?expand_more
3 C4 to destroy an Armored Door from the hard side — that's 6,600 sulfur once you count the full gunpowder chain. From the soft side (inside face) it's 2, because the interior takes more damage per hit.
What's the soft side of an Armored Door?expand_more
The soft side is the interior-facing face — the side you see from inside the base. It takes roughly 34% less to break, so 2 C4 instead of 3. If you can get an angle on the inside face through a doorway or window, take it. On a wall, the soft side is the one without the visible seams.
Are C4 the cheapest way to raid an Armored Door?expand_more
No. Explosive 5.56 Ammo is cheaper on sulfur for this target — 250× costs 6,250 sulfur versus 6,600 for 3 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 3 C4?expand_more
6,600 sulfur, plus 9,000 charcoal and 600 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 an Armored Door with C4?expand_more
About 30s of placement time for 3 — 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.