Composite Steel Beam is an assembled item used in one mission.


Composite Steel Beam can be crafted using the Assembly Station. The diagram is given to the player when they accepting the Road to the Marsh and choose the Western (harder) route.

Alternatively, the diagram can be bought from the Research Center Exchange for 39 Data Discs after the mission.

Level 2 Assembly StationLevel 2 Assembly Station Level 2 Assembly Station
Blueprint Materials
Composite Steel Beam
Composite Steel Beam


One Composite Steel Beam is required to complete the western road during Road to the Marsh mission. It has no other use.

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