A Steel Block is a special block that must be crafted.
Steel blocks are white/silver in color.
Unlike most blocks, a steel block is not spawned in a new world and must be created at a metalwork bench.
It takes five steel ingots to make a steel block.
Steel blocks are necessary for the crafting of steam generators, flywheels, solar panels, and all electric benches.
Steel blocks are useful in construction, and placing one will produce an achievement. As the block with the greatest durability, they are useful in the creation of barriers resistant to intrusion during multiplayer sessions.