Steel Mill

Steel Mill


Building Type	Resource
Resource Produced	Steel
Population	-5
Population When Inactive	-1
Size	4 x 5
Unlocked	Level 21
Cost
Gold	95,000
Iron	7,200
Concrete	5,400
Construction Time	1d 6h

Sell Price	10 10
Max Assists	20
Reward for Assisting	15
Reward for Raiding	30
Reward for Occupation	114

"The Steel Mill will produce Steel for you, but in exchange it wants both Iron AND Coal. No other mills are this demanding. The Steel Mill knows it is high maintenance. And deep down, it secretly likes it that way."

— In-game Description

Overview[]

Building the Steel Mill is going to test the player's resource strain, but this is a necessary step in order to reach any unit requiring Steel in order to work with. Players will need to bite the bullet and figure out a good way of getting 7,200 Iron while building their Concrete.

Once a player has a Steel Mill, they will keep it running as much as they can, because it is crucial to build themselves that tank battalion they always wanted. Not only that, but to keep said tanks running and out of repair, they're going to need lots of Steel.

To maximize production, players will place their buildings where visitors (Friends) will see them immediately when they open your world. This makes its easy for them to help the player.

After the 1.5 Patch, players can now upgrade Steel Mills for a higher Steel output.

Building a Steel Mill is required for the achievement "Starting to Refine Yourself".

Goods[]

Steel Mill Goods
Item			Level	1	2	3	4	5	6	7	8	9	10
	Crucible Steel	2h	Input	150	225	300	375	450	525	600	675	750	825
			Input	50	75	100	125	150	175	200	225	250	275
			Output	100	150	200	250	300	350	400	450	500	550
	Stainless Steel	4h	Input	375	563	750	938	1125	1313	1500	1688	1875	2063
			Input	125	188	250	313	375	438	500	563	625	688
			Output	250	375	500	625	750	875	1000	1125	1250	1375
	Tool Steel	8h	Input	625	938	1250	1563	1875	2188	2500	2813	3125	3438
			Input	208	312	415	519	623	727	830	934	1038	1142
			Output	418	627	835	1044	1253	1462	1670	1879	2088	2297
	Tempered Steel	16h	Input	1000	1500	2000	2500	3000	3500	4000	4500	5000	5500
			Input	333	499	665	832	998	1164	1330	1497	1663	1829
			Output	675	1013	1350	1688	2025	2363	2700	3038	3375	3713
	Carbon Steel	1d	Input	1125	1688	2250	2813	3375	3938	4500	5063	5625	6188
			Input	375	563	750	938	1125	1313	1500	1688	1875	2063
			Output	750	1125	1500	1875	2250	2625	3000	3375	3750	4125

Quest Goods
Item			Cost	Reward
	Metal Patch Kit	18h	1,000, 2,000	1,500
	Armor Patch Kit	19h	1,000, 1,750	750

Notes

Based on this information, you only need 1/4 of the Steel cost in Coal.
The Stainless Steel is the most efficient way of converting Steel, allowing you to produce 500 Steel every 4 Hours for a total of 500 x 6 = 3,000 Steel in a 24-Hr day.
Provided you have the Iron to match, a single regular, level 3 Coal Mine (30 Coal/Hour) will yield 720 Coal/day and thus allow you to produce ~1,500 Steel/day.
A single Advanced Coal Mine (60 Coal/Hour) will yield 1,440 Coal/day equivalent to ~3,000 Steel/day provided you have the Iron (4,500 Iron/day) with a single Steel Mill.

Levels[]

Steel Mill Levels
Building Level	1	2	3	4	5	6	7	8	9	10
Interval	1d
Collected	750	1,125	1,500	1,875	2,250	2,625	3,000	3,375	3,750	4,125

Gold Cost	95,000	500	1,000	1,300	5,200	20,800	41,600	83,200	124,800	187,200
Wood Cost	-	60	125	-	-	-	-	-	-	-
Iron Cost	7,200	-	-	-	-	-	-	-	-	-
Concrete Cost	5,400	60	125	340	1,020	2,040	4,080	6,120	9,180	13,770
Lumber Cost	-	-	-	340	1,020	2,040	4,080	6,120	9,180	13,770
Time Cost	1d 6h	5m	15m	1h	1h	2h	2h	4h	8h	12h