# Iron processing - Stage 1 (technology)

internal name `iron-mk01` · tier 1 (pY science pack 1, [tier 1](https://factorio.kalzumeus.com/tier/1.md))
HTML page: https://factorio.kalzumeus.com/tech/iron-mk01/

## Cost

90 units of (1 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 2 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 45 s each.

## Requires (3)

- [Boron](https://factorio.kalzumeus.com/tech/boron.md)
- [Casting - Stage 1](https://factorio.kalzumeus.com/tech/casting-mk01.md)
- [Hot air - Stage 1](https://factorio.kalzumeus.com/tech/hot-air-mk01.md)

## Leads to (2)

- [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md)
- [Steel - Stage 2](https://factorio.kalzumeus.com/tech/steel-mk02.md)

## Unlocks (3 recipes)

### Iron plate (`hotair-iron-plate-1`)

- 4 s · tier 1
- Ingredients: 100 × [Molten iron](https://factorio.kalzumeus.com/fluid/molten-iron.md), 3 × [Borax](https://factorio.kalzumeus.com/item/borax.md), 1 × [Sand casting](https://factorio.kalzumeus.com/item/sand-casting.md), 50 × [Hot air](https://factorio.kalzumeus.com/fluid/hot-air.md)
- Results: 75 × [Iron plate](https://factorio.kalzumeus.com/item/iron-plate.md)
- Made in: Casting unit MK 01, Casting unit MK 01 (Legacy), Casting unit MK 02, Casting unit MK 02 (Legacy), Casting unit MK 03, Casting unit MK 03 (Legacy), Casting unit MK 04, Casting unit MK 04 (Legacy)
- Unlocked by: [Iron processing - Stage 1](https://factorio.kalzumeus.com/tech/iron-mk01.md)

### Iron plate (`iron-plate-1`)

- 4 s · tier 1
- Ingredients: 100 × [Molten iron](https://factorio.kalzumeus.com/fluid/molten-iron.md), 3 × [Borax](https://factorio.kalzumeus.com/item/borax.md), 1 × [Sand casting](https://factorio.kalzumeus.com/item/sand-casting.md)
- Results: 60 × [Iron plate](https://factorio.kalzumeus.com/item/iron-plate.md)
- Made in: Casting unit MK 01, Casting unit MK 01 (Legacy), Casting unit MK 02, Casting unit MK 02 (Legacy), Casting unit MK 03, Casting unit MK 03 (Legacy), Casting unit MK 04, Casting unit MK 04 (Legacy)
- Unlocked by: [Iron processing - Stage 1](https://factorio.kalzumeus.com/tech/iron-mk01.md)

### Molten iron (`molten-iron-05`)

- 4 s · tier 1
- Ingredients: 5 × [Processed iron ore](https://factorio.kalzumeus.com/item/processed-iron-ore.md), 3 × [Borax](https://factorio.kalzumeus.com/item/borax.md), 60 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md)
- Results: 10 × [Molten iron](https://factorio.kalzumeus.com/fluid/molten-iron.md)
- Made in: Basic oxygen furnace MK 01, Basic oxygen furnace MK 02, Basic oxygen furnace MK 03, Basic oxygen furnace MK 04
- Unlocked by: [Iron processing - Stage 1](https://factorio.kalzumeus.com/tech/iron-mk01.md)