Signalum

Signalum is an alloy added by Thermal Foundation. Signalum is used the crafting of many various items, including the Plate Frame, the Flux-Plated Fluiduct and the Reinforced Machine Frame.

Thermal Foundation
Signalum can be made in Thermal Foundation by mixing Copper, Silver and a bucket of Destabilized Redstone.

Then smelt the resulting blend into Signalum ingots.

Ender IO
Ender IO does not add Signalum to the mod itself, but a compatibility recipe is added allowing Signalum to be made in the Alloy Smelter.

Tinkers' Construct
Tinkers' Construct does not add Signalum to the mod itself, but a compatibility recipe is added allowing Signalum to be made in the Smeltery.