The cutting thickness of steel plates by a 12000W laser cutting machine varies depending on the material. Carbon steel can be cut up to 25-50mm, stainless steel can be cut up to 40-45mm, and aluminum plate is 20-40mm. The specific thickness is affected by factors such as laser type, auxiliary gas, and cutting speed, and needs to be adjusted according to actual working conditions.
Cutting thickness of steel plates of different materials
Carbon steel: Most manufacturers' data show that a 12000W laser cutting machine can cut 25mm thick (at a speed of 7 meters/minute under air assistance), and some equipment claims to be able to cut up to 50mm, but the latter may sacrifice cutting quality or efficiency.

Stainless steel: The cutting thickness is usually between 40-45mm, but the cross-section quality may decrease when it exceeds 25mm (needs nitrogen and other auxiliary gases for optimization).
Aluminum plate: The cutting capacity is 20-40mm. In actual applications, the loss of laser energy due to high reflectivity needs to be considered.
Key factors affecting cutting thickness
Assistant gas: Air is suitable for thin carbon steel plates, and nitrogen/oxygen can improve the efficiency and quality of stainless steel cutting.
Cutting speed: When the thickness increases, the speed needs to be reduced to ensure penetration. For example, the speed of 25mm carbon steel is about 7 meters/minute.
Equipment stability: High-power equipment needs to be equipped with beam safety light curtains, automatic lubrication systems, etc. to maintain long-term accuracy.