# Solder - Stage 3 (technology)

internal name `solder-mk03` · tier 5 (Chemical science pack, [tier 5](https://factorio.kalzumeus.com/tier/5.md))
HTML page: https://factorio.kalzumeus.com/tech/solder-mk03/

## Cost

1100 units of (1 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 2 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 3 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 6 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 10 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 120 s each.

## Requires (2)

- [Silver - Stage 2](https://factorio.kalzumeus.com/tech/silver-mk02.md)
- [Solder - Stage 2](https://factorio.kalzumeus.com/tech/solder-mk02.md)

## Leads to (1)

- [Solder - Stage 4](https://factorio.kalzumeus.com/tech/solder-mk04.md)

## Unlocks (1 recipes)

### Molten solder (`molten-solder-2`)

- 2 s · tier 5
- Ingredients: 30 × [Molten tin](https://factorio.kalzumeus.com/fluid/molten-tin.md), 10 × [Molten copper](https://factorio.kalzumeus.com/fluid/molten-copper.md), 10 × [Molten silver](https://factorio.kalzumeus.com/fluid/molten-silver.md), 30 × [Tar](https://factorio.kalzumeus.com/fluid/tar.md)
- Results: 70 × [Molten solder](https://factorio.kalzumeus.com/fluid/molten-solder.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: [Solder - Stage 3](https://factorio.kalzumeus.com/tech/solder-mk03.md)