Nevatronix Laser cuts carbon steel plate — the structural, load-bearing end of the carbon steel family — from about 1/4 in up to 12 mm (1/2 in) on a 3 kW fiber source with oxygen assist. Plate is where a laser-cut profile earns its keep over a torch, a saw, or a mill: baseplates, gussets, and brackets come off with clean, repeatable holes and outlines that drop straight into a weldment. It is also the top of our thickness envelope, and we are direct about where that ceiling is.
Specifications
| Attribute | Value |
|---|---|
| Grades | A36, A572 Gr 50, hot-rolled A1011 / A1018 |
| Practical range | 6 – 12 mm (1/4 – 1/2 in) |
| Cut tolerance | ±0.1 mm (±0.004 in) at plate gauge |
| Edge quality | ISO 9013 range 2 |
| Max sheet size | 1500 × 3000 mm (60 × 120 in) |
| Assist gas | Oxygen |
| Edge condition | Thin oxide layer |
How carbon steel plate behaves under a fiber laser
Plate is cut with oxygen, and that is what makes 12 mm reachable on a 3 kW source. Oxygen does not just clear the kerf — it burns with the iron in an exothermic reaction that adds close to half the cutting energy on carbon steel. That chemical boost is why our cell reaches a full 12 mm on plate but only 6 mm on stainless, where the gas is inert. The cost is a thin iron-oxide scale on the cut edge, which is normal and expected on oxygen-cut plate.
Thickness changes what you can expect from the cut. The kerf is wider, the pierce takes longer, and the heat-affected zone is larger than on thin sheet, so tolerance opens up to roughly ±0.1 mm rather than the ±0.05 mm we hold on light gauge — still far tighter than a torch or bandsaw. A well-tuned cut holds edge squareness within ISO 9013 range 2; the thickest sections can show a slight edge taper. For a structural weld, the oxide edge is usually fine after a wipe; for a critical weld or a painted surface, the edge is ground or blasted first so the weld or coating bonds to clean metal.
The honest boundary is 12 mm. Above that, a fiber laser is the wrong tool — the cut slows, the edge degrades, and plasma, oxy-fuel, waterjet, or machining gives a better result. We will tell you when a part is over the line rather than force it.
Applications by industry
Plate is the structural connector of a fabricated assembly. In smart automation it is machine bases, equipment feet, and heavy mounting brackets that carry load. In electronics and data center builds it is baseplates and structural supports under racks and enclosures. In architectural work it is connection plates, gussets, and bracketry in visible steel. In gaming systems it is the heavy structural brackets inside large cabinets. The common demand is a bolt pattern or weld connection that has to register precisely — which a laser-cut plate profile holds better than a drilled-and-sawed one, off a single datum in one setup.
Design tips for plate laser-cut parts
- Keep it at or under 12 mm. Design plate parts within the envelope; if a part must be thicker, tell us early so we route it correctly.
- Open up hole sizes on thick plate. Keep holes at or above the plate thickness for a clean pierce; a small hole in 12 mm plate cuts poorly.
- Expect an oxide edge. Plan a grind or blast step for critical welds or painted surfaces; note it on the drawing.
- Tolerance the connections that matter. Call out bolt patterns and mating dimensions so we verify them on the first article.
When another process fits better
- Thicker than 12 mm. Plasma, oxy-fuel, waterjet, or machining is the right process — we will point you to it.
- Thin cosmetic or enclosure parts. Light-gauge work belongs on mild steel or cold-rolled steel, often nitrogen-cut for a clean edge.
- Corrosion-critical structure. For plate that lives outdoors, galvanized or stainless resists corrosion the bare carbon plate will not.
- A perfectly machined edge. If the edge must be square and burr-free to a machining spec, plan a secondary operation.
Quoting a plate part
Send a DXF or STEP with the grade, thickness, and quantity to our quote page, and flag the critical connection dimensions. We confirm the part sits within the 12 mm plate envelope, advise on edge prep, and quote from a single prototype to a production run out of our ISO 9001:2015 shop in Las Vegas.