Steel in Satisfactory: Ingots, Beams and Pipes

Steel is the wall. Iron and copper are forgiving; steel arrives with a chain that needs two resources at once, and the alternate recipes for it vary more wildly than anywhere else in the game.

The four ingot recipes

Recipe	Output	Inputs
Steel Ingot	45/min	45 Iron Ore + 45 Coal
Alternate: Compacted Steel Ingot	10/min	5 Iron Ore + 2 Compacted Coal
Alternate: Solid Steel Ingot	60/min	40 Iron Ingot + 40 Coal
Alternate: Coke Steel Ingot	100/min	75 Iron Ore + 75 Petroleum Coke

All in a Foundry drawing 16 MW. The spread is more than tenfold, and the reason is that they are not really alternatives to each other — each one suits a different situation.

Steel Ingot is the baseline and needs nothing special. Iron ore and coal, both abundant.

Compacted Steel Ingot looks terrible at 10/min per machine, and per unit produced it is the most ore-efficient of the four: 1.0 raw ore per ingot against the base recipe’s 2.0. Do not compare the input rates directly — a recipe producing 10/min naturally consumes less than one producing 45/min. The comparison that matters is per ingot.

The catch this recipe carries: Compacted Coal needs Sulfur, and sulfur nodes are far scarcer than iron or coal. You are trading an abundant constraint for a tight one. It is the right choice when iron and coal are genuinely limited and sulfur is not otherwise committed — which is a narrower situation than the ore figure alone suggests.

Solid Steel Ingot takes iron ingots rather than ore, which means adding a smelting stage. In exchange it is considerably more ore-efficient than the base recipe and produces more per machine. This is the one most players adopt first.

Coke Steel Ingot produces 100/min, more than double the base, using Petroleum Coke. That makes it the obvious choice if you already have an oil setup producing coke as a byproduct — you are converting a waste stream into your steel supply. Without oil, it is unavailable.

Which to pick

The question is not which recipe is best, it is which constraint you actually have.

Ore-limited — a small number of iron nodes, no room to expand extraction. Take Compacted Steel Ingot, accept more Foundries, and check you have sulfur to spare first.

Space-limited — plenty of ore, no room for machines. Take Coke Steel Ingot if you have oil, Solid Steel Ingot if you do not.

Neither, early — the base recipe is fine. Steel does not need optimising the moment you unlock it.

Running oil already — Coke Steel Ingot, without hesitation. Petroleum Coke is otherwise something you have to find a use for.

The comparator on this site ranks all four on raw ore per unit, power per unit and throughput if you want the exact figures for your own situation.

Beams and pipes

Downstream of ingots, two products and their alternates:

Recipe	Output	Inputs
Steel Beam	15/min	60 Steel Ingot
Alternate: Molded Beam	45/min	120 Steel Ingot + 80 Concrete
Steel Pipe	20/min	30 Steel Ingot
Alternate: Molded Steel Pipe	50/min	50 Steel Ingot + 30 Concrete

Both molded recipes trade concrete for a large throughput increase, and concrete is among the cheapest materials to produce — limestone nodes are abundant and a Constructor makes concrete for 4 MW.

Limestone is not entirely uncontested, though. Around ten machine recipes draw on it, including Cheap Silica, Distilled Silica, the alternate concrete recipes and the converter recipes that turn limestone into coal or iron ore. In practice supply comfortably exceeds demand for most factories, but if you are running Distilled Silica at scale for an aluminium chain, check the limestone budget before assuming it is free.

If you take one pair of alternates in this chain, take the molded ones. Tripling beam output per machine for limestone you were not using is close to free.

Alternate: Iron Pipe makes Steel Pipe from iron ingots entirely, which is occasionally useful for a remote outpost with iron but no coal.

Why steel is where playthroughs slow down

Three things happen at once when you reach steel:

You need two resources feeding one machine. Every chain before this took one input. Suddenly the Foundry wants iron and coal arriving in matched quantities, and a shortage of either idles it.

Coal is contested. Your coal generators want coal. Your Foundries want coal. If you built power on a coal node and then need steel, those two demands compete, and the power loss compounds because everything else stops too.

The parts above steel are expensive. Encased Industrial Beams, Heavy Modular Frames, Versatile Frameworks — the tier above steel consumes it in volumes that make a small steel line look pointless.

The practical response to all three: build steel bigger than feels necessary, and put it on its own coal node. Sharing a node between power and steel is the specific decision that causes the most trouble here.

Sizing a steel line

Work from the coal, because coal is usually the binding constraint.

A Miner Mk.2 on a normal coal node gives 120/min. At the base recipe that supports two Foundries and 90 steel ingots per minute, needing 90 iron ore per minute alongside.

With Coke Steel Ingot, 75 Petroleum Coke feeds one Foundry producing 100 ingots. Your oil setup’s coke output therefore sets the ceiling, and that is usually a happier constraint than competing with your power plant for coal.

Underclock rather than starve if the numbers do not divide evenly. Power scales by an exponent, so several machines slightly underclocked draw less than fewer at full rate plus one cycling.

Encased Industrial Beam and what comes next

Steel exists mainly to become the tier above it, and the part that consumes it fastest is the Encased Industrial Beam — steel beams plus concrete, feeding Heavy Modular Frames and most large buildings from that point on.

This is worth knowing while you are sizing the steel line, because the consumption is not gradual. A phase asking for Heavy Modular Frames converts into a steel demand several times larger than anything you needed before, and a line built for the previous tier will not stretch.

The practical version: when you build steel, build the beam and pipe lines at the same time, and give all three room to double. Retrofitting throughput into a packed steel block is one of the more tedious jobs in the game.

Concrete deserves a mention

Two of the four alternates in this chain want concrete, and concrete is the material players most often under-build.

Limestone nodes are abundant and a Constructor makes concrete at a decent rate for 4 MW. Yet many factories run one small concrete line built early and never revisited, which then throttles the molded recipes that would have made steel easier.

If you are adopting Molded Beam or Molded Steel Pipe, check your concrete supply first. It is the cheapest bottleneck in the game to remove.

Common mistakes

Sharing a coal node between power and steel. They compete, and when power loses, everything stops.

Judging recipes by input rate rather than per unit. Compacted Steel Ingot uses half the ore per ingot; it just makes fewer ingots per machine.

Adopting Compacted Steel Ingot without checking sulfur. Compacted Coal needs it, and sulfur nodes are scarce.

Skipping the molded beam and pipe alternates. They cost concrete, which you have.

Building a small steel line. Everything above steel consumes it faster than you expect.

Taking Coke Steel Ingot before you have oil. Petroleum Coke is not obtainable otherwise.