Upgrade to increase Steel production output and Steel capacity
Steel Mills produce and store Steel.
Resources produced by resource buildings aren’t included in Depot Protection. We recommend you collect them without delay.
Notes:
- This building is unlocked only when your Main Hall is level 15.
Steel Mill upgrade requirements:
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| Lv. | Food | Oil | Steel | Minerals | Uranium | Requirement |
|---|---|---|---|---|---|---|
| 1 | 130 | 130 | – | – | – | Main Hall Lv.1 |
| 2 | 270 | 270 | – | – | – | Main Hall Lv.2 |
| 3 | 340 | 340 | – | – | – | Main Hall Lv.3 |
| 4 | 480 | 480 | – | – | – | Main Hall Lv.4 |
| 5 | 720 | 720 | – | – | – | Main Hall Lv.5 |
| 6 | 1,120 | 1,120 | – | – | – | Main Hall Lv.6 |
| 7 | 2,030 | 2,030 | – | – | – | Main Hall Lv.7 |
| 8 | 3,590 | 3,590 | – | – | – | Main Hall Lv.8 |
| 9 | 6,240 | 6,240 | – | – | – | Main Hall Lv.9 |
| 10 | 12,490 | 12,490 | – | – | – | Main Hall Lv.10 |
| 11 | 25,290 | 25,290 | – | – | – | Main Hall Lv.11 |
| 12 | 44,580 | 44,580 | – | – | – | Main Hall Lv.12 |
| 13 | 66,070 | 66,070 | – | – | – | Main Hall Lv.13 |
| 14 | 103,070 | 103,070 | – | – | – | Main Hall Lv.14 |
| 15 | 149,200 | 149,200 | – | – | – | Main Hall Lv.15 |
| Lv. | Food | Oil | Steel | Minerals | Uranium | Requirement |
| 16 | 212,260 | 212,260 | – | – | – | Main Hall Lv.16 |
| 17 | 281,260 | 281,260 | – | – | – | Main Hall Lv.17 |
| 18 | 370,500 | 370,500 | – | – | – | Main Hall Lv.18 |
| 19 | 461,350 | 461,350 | – | – | – | Main Hall Lv.19 |
| 20 | 537,830 | 537,830 | – | – | – | Main Hall Lv.20 |
| Lv. | Food | Oil | Steel | Minerals | Uranium | Requirement |
| 21 | 602,810 | 602,810 | – | – | – | Main Hall Lv.21 |
| 22 | 674,790 | 674,790 | – | – | – | Main Hall Lv.22 |
| 23 | 770,760 | 770,760 | – | – | – | Main Hall Lv.23 |
| 24 | 880,730 | 880,730 | – | – | – | Main Hall Lv.24 |
| 25 | 1,005,190 | 1,005,190 | – | – | – | Main Hall Lv.25 |
| 26 | 1,147,150 | 1,147,150 | – | – | – | Main Hall Lv.26 |
| 27 | 1,308,600 | 1,308,600 | – | – | – | Main Hall Lv.27 |
| 28 | 1,466,050 | 1,466,050 | – | – | – | Main Hall Lv.28 |
| 29 | 1,641,490 | 1,641,490 | – | – | – | Main Hall Lv.29 |
| 30 | 1,838,280 | 1,838,280 | – | – | – | Main Hall Lv.30 |
| Lv. | Food | Oil | Steel | Minerals | Uranium | Requirement |
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Additional info:
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| Lv. | Steel Output in 1 hour | Steel Capacity | Battle Power | Base Construction Time |
|---|---|---|---|---|
| 1 | 80 | 8,00 | 1 | 0:00 |
| 2 | 102 | 1,020 | 4 | 0:00 |
| 3 | 126 | 1,260 | 11 | 0:00 |
| 4 | 152 | 1,520 | 24 | 0:00 |
| 5 | 180 | 1,800 | 45 | 0:00 |
| 6 | 210 | 2,100 | 76 | 8:00 |
| 7 | 242 | 2,420 | 120 | 16:00 |
| 8 | 276 | 2,760 | 180 | 24:00 |
| 9 | 312 | 3,120 | 259 | ? |
| 10 | 350 | 3,500 | 360 | ? |
| 11 | 390 | 3,900 | 486 | ? |
| 12 | 432 | 4,320 | 641 | ? |
| 13 | 476 | 4,760 | 829 | ? |
| 14 | 522 | 5,220 | 1,054 | ? |
| 15 | 570 | 5,700 | 1,320 | ? |
| Lv. | Steel Output in 1 hour | Steel Capacity | Battle Power | Base Construction Time |
| 16 | 620 | 6,200 | 1,631 | ? |
| 17 | 672 | 6,720 | 1,992 | ? |
| 18 | 726 | 7,260 | 2,408 | ? |
| 19 | 782 | 7,820 | 2,884 | ? |
| 20 | 840 | 8,400 | 3,425 | ? |
| Lv. | Steel Output in 1 hour | Steel Capacity | Battle Power | Base Construction Time |
| 21 | 900 | 9,000 | 4,036 | ? |
| 22 | 962 | 9,620 | 4,772 | ? |
| 23 | 1,026 | 10,260 | 5,489 | ? |
| 24 | 1,092 | 10,920 | 6,343 | ? |
| 25 | 1,160 | 11,600 | 7,290 | ? |
| 26 | 1,230 | 12,300 | 8,336 | ? |
| 27 | 1,302 | 13,020 | 9,487 | ? |
| 28 | 1,376 | 13,760 | 10,749 | ? |
| 29 | 1,452 | 14,520 | 12,128 | ? |
| 30 | 1,530 | 15,300 | 13,630 | ? |
| Lv. | Steel Output in 1 hour | Steel Capacity | Battle Power | Base Construction Time |
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