# Basic oxygen furnace MK 03

Pyanodons item · internal name `bof-mk03` · stack size 10 · first craftable in tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md))
HTML page: https://factorio.kalzumeus.com/item/bof-mk03/

## Produced by (1 recipes)

### Basic oxygen furnace MK 03 (`bof-mk03`)

- 2 s · tier 7
- Ingredients: 1 × [Basic oxygen furnace MK 02](https://factorio.kalzumeus.com/item/bof-mk02.md), 20 × [Titanium plate](https://factorio.kalzumeus.com/item/titanium-plate.md), 20 × [Super steel](https://factorio.kalzumeus.com/item/super-steel.md), 5 × [Electric engine unit](https://factorio.kalzumeus.com/item/electric-engine-unit.md), 20 × [Glass](https://factorio.kalzumeus.com/item/glass.md), 20 × [Tin plate](https://factorio.kalzumeus.com/item/tin-plate.md), 10 × [High tech circuit board](https://factorio.kalzumeus.com/item/processing-unit.md), 20 × [Niobium titanium alloy](https://factorio.kalzumeus.com/item/nbti-alloy.md), 20 × [Heavy fermion material](https://factorio.kalzumeus.com/item/heavy-fermion.md), 20 × [Carbon aerogel](https://factorio.kalzumeus.com/item/carbon-aerogel.md), 15 × [Graphene roll](https://factorio.kalzumeus.com/item/graphene-roll.md), 10 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 10 × [Nano Structured Material](https://factorio.kalzumeus.com/item/ns-material.md), 1 × [Mechanical Parts 02](https://factorio.kalzumeus.com/item/mechanical-parts-02.md)
- Results: 1 × [Basic oxygen furnace MK 03](https://factorio.kalzumeus.com/item/bof-mk03.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion,  (flying)
- Unlocked by: [Smelters - Stage 3](https://factorio.kalzumeus.com/tech/smelters-mk03.md)

## Used in (1 recipes)

- Basic oxygen furnace MK 04 (`bof-mk04`, tier 10) → [Basic oxygen furnace MK 04](https://factorio.kalzumeus.com/item/bof-mk04.md)