Alloy Steel
Alloy Steel feels worth the slot when a real craft, upgrade, or sale plan is already waiting for it after extraction.
Scrap Metal is worth keeping when the next cheap craft or ammo batch still needs base metal before rarer parts take over.
Scrap Metal earns cargo space when you are still feeding the cheap end of the crafting tree. It is the material that keeps early weapons, ammo lines, and basic upgrades moving before rarer parts start deciding the run. That also means it is easy to overcarry. Once the immediate crafts are covered, a low-value stack of Scrap Metal can lose to heals, shells, or higher-payoff loot very quickly.
You mainly pull it from Parts Crates, and it stays in the common crafting-material pool rather than the rarer upgrade-material lane.
Alloy Steel feels worth the slot when a real craft, upgrade, or sale plan is already waiting for it after extraction.
Coral Chunk feels useful early because you keep finding places to spend it instead of watching it rot in storage.
Coral Dust starts feeling good the moment you realize it is not random filler and actually feeds ammo people want to craft.
Fabric matters when the next recipe has already moved past scraps, so it wins the slot only if a higher-grade textile input is actually waiting.
Fabric Scraps only deserve cargo space when a live recipe still accepts scraps; otherwise they lose to fuel, heals, and ammo fast.
Gunpowder is a keep-or-drop material, and it wins the slot only when ammo or explosive crafting is already part of the plan.
High-Grade Gunpowder earns cargo space only when a real craft or trade plan already needs it more than the survival stacks competing for the same slot.
Leviathan Meat is the easier Leviathan material to justify, because Food Crates drop it and each stack still sells for 14 Crowns per piece at the pawn shop.
Its best value is early and practical: cheap weapons, cheap ammo, and the first layers of progress that still burn through basic metal instead of rarer parts.
When no current recipe, research node, trade target, or Trampler upgrade needs it, fuel, heals, and matching ammunition move ahead in the pack.
It is still worth the slot when your next craft, ammo batch, or unlock is blocked by base metal instead of by rarer materials.
It should be the first cut when the easy crafts are already covered and the same slot could carry heals, shells, fuel, or loot with a much better payout.