⚠️ Eco v0.14 is coming — the next major update reworks upgrade modules, so some of these numbers will change. They reflect the current version. What’s changing →
  • Simpler tiers: the 1–4 tiered upgrades become a single Basic / Advanced / Modern upgrade each.
  • Permanent upgrades: a module placed in a workstation is permanent — no more swapping lower tiers out as you progress.
  • Power transitions: a module can change a station’s power type/draw (e.g. a Modern upgrade moves a sawmill from mechanical to electrical power).
  • Talent-integrated: modules now use the same bonus/talent system — any talent benefit (power, labor cost, recipe unlocks) can come from a module.
  • Cheaper to upgrade: with the multi-tier parts gone, fully upgrading a workstation costs significantly less.

We’ll update this calculator shortly after the update releases.

Home › Items › Flat Steel

Flat Steel

Flat Steel

Coated with a layer of epoxy, this steel refuses to rust.

Weight10000 gMax stack20Carried on backSkillAdvanced Smelting Lv 5StationRolling Mill

Notes

Flat Steel is a tier 5 solid-wall building block made durable by an epoxy coating that prevents rust. Its high tier makes it valuable for constructing rooms with top housing value and unlocking the highest-grade crafting upgrades. As an ingredient in the Industrial Elevator and Flat Steel Door, it is a late-game necessity. Because it is heavy (10 kg each) and carried on the back, plan bulk transport carefully when stocking for major builds.

Notes are AI-generated and may be imprecise.

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Upgrade modules
Talents

Ingredients

IngredientQtyType
Steel Bar3item
Epoxy1item

Crafting

Labor120 calories
Craft time0.64 min
Throughput≈ 93.8 Flat Steel / hour (base)

As a block

Material tierTier 5SolidWall

Total raw to craft this

Steps18Total labor1984.38 calTotal time19.35 min

Approximate — category ingredients and any production cycles are counted as raw.

Categories

Obtained from

Used in

Robotic Assembly Line
Rolling Mill

See also

AdobeAshlar BasaltAshlar GneissAshlar GraniteAshlar LimestoneAshlar Sandstone