# HUB Upgrade 6

> Canonical source: [HUB Upgrade 6](https://satisfactorybase.its-live.dev/wiki/schematics/hub-upgrade-6)
> Language: en

## Properties

- Entity type: Milestone
- Tier: 0
- Inventory slots: +3

## Unlock cost

- [Iron Rod](/wiki/items/iron-rod): 100
- [Iron Plate](/wiki/items/iron-plate): 100
- [Wire](/wiki/items/wire): 100
- [Concrete](/wiki/items/concrete): 50

## Prerequisites

- [HUB Upgrade 5](/wiki/schematics/hub-upgrade-5)

## Unlocked recipes

- [Biomass (Wood)](/wiki/recipes/recipe-biomass-wood-c)
- [Biomass (Leaves)](/wiki/recipes/recipe-biomass-leaves-c)

## Unlocked buildings

- [Space Elevator](/wiki/buildings/space-elevator)
- [Biomass Burner](/wiki/buildings/biomass-burner)

## Technical Details

- Class name: Schematic_Tutorial5_C
- Native class: FGSchematic
- Asset path: /Game/FactoryGame/Schematics/Tutorial/Schematic_Tutorial5