{"id":2516,"date":"2026-02-05T11:54:45","date_gmt":"2026-02-05T03:54:45","guid":{"rendered":"https:\/\/www.fincmfuture.com\/?p=2516"},"modified":"2026-02-05T11:54:45","modified_gmt":"2026-02-05T03:54:45","slug":"how-to-choose-laser-power-for-metal-sheet-cutting","status":"publish","type":"post","link":"https:\/\/www.fincmfuture.com\/cs\/how-to-choose-laser-power-for-metal-sheet-cutting\/","title":{"rendered":"How to Choose Laser Power for Metal Sheet Cutting"},"content":{"rendered":"Choosing the right laser power is one of the most critical decisions in metal cutting. Too little power leads to slow speed and unstable cutting. Too much power means higher cost, higher energy consumption, and unnecessary investment.<\/p>\n
For manufacturers cutting carbon steel and stainless steel with thickness between 20\u201340mm<\/strong>, laser power selection must be based on material, thickness, production efficiency, and cutting quality requirements<\/strong>, not just \u201cthe higher, the better\u201d.<\/p>\nThis guide explains how to choose laser power for metal sheet cutting<\/strong> from a real factory perspective.<\/p>\n\n
Why Material Type Matters First<\/h2>\n
Different metals absorb laser energy very differently, and this directly affects the required laser power.<\/p>\n
\n- \n
Carbon steel<\/strong> has a high laser absorption rate and is relatively easy to cut.<\/p>\n<\/li>\n- \n
Nerezov\u00e1 ocel<\/strong> has lower absorption and higher thermal conductivity, requiring more power to achieve stable speed and clean cutting edges.<\/p>\n<\/li>\n- \n
Highly reflective metals<\/strong> such as aluminum and copper demand even higher power and better beam quality to maintain cutting stability.<\/p>\n<\/li>\n<\/ul>\nIf your main materials are carbon steel and stainless steel, laser selection should be based on stable stainless-steel cutting performance<\/strong>, not only on what works for carbon steel.<\/p>\nUse the 80% \/ 20% Rule to Define Real Cutting Needs<\/h2>\n
In real production, most factories do not cut maximum thickness every day.
A practical approach is to divide cutting requirements into two parts:<\/p>\n
\n- \n
80% regular cutting thickness<\/strong> \u2014 where speed, stability, and surface quality matter most<\/p>\n<\/li>\n- \n
20% non-regular or extreme thickness<\/strong> \u2014 occasional jobs that require extra capacity<\/p>\n<\/li>\n<\/ul>\nLaser power should be selected to ensure the 80% regular thickness<\/strong> can be cut efficiently and consistently.
Choosing power only for maximum thickness often leads to underutilized capacity, higher energy consumption, and longer return-on-investment cycles.<\/p>\n![\"enclosed-fiber-laser-6025](\"https:\/\/www.fincmfuture.com\/wp-content\/uploads\/2026\/02\/enclosed-fiber-laser-6025.webp\")
<\/p>\n
What Laser Power Really Determines: Speed and Productivity<\/h2>\n
\n\n\n| V\u00fdkon laseru<\/td>\n | 6KW
\nfiber laser cutting parameters<\/td>\n | 12kw
\nfiber laser cutting parameters<\/td>\n | 20kw
\nfiber laser cutting parameters<\/td>\n<\/tr>\n |
\n| GAS<\/td>\n | Oxygen<\/td>\n | Oxygen Positive Focus<\/td>\n | Oxygen Positive Focus<\/td>\n<\/tr>\n |
\n| Material<\/td>\n | Thickness(mm)<\/td>\n | Speed [m\/min]<\/td>\n | <\/td>\n<\/tr>\n |
\nCarbon Steel<\/strong><\/td>\n| 10<\/td>\n | 2.0-2.3<\/td>\n | 2-2.3<\/td>\n | 2-2.3<\/td>\n<\/tr>\n | \n| 12<\/td>\n | 0.9-1<\/td>\n | 1.8-2<\/td>\n | 1.8-2<\/td>\n<\/tr>\n | \n| 14<\/td>\n | 0.8-0.9<\/td>\n | 1.6-1.8<\/td>\n | 1.6-1.8<\/td>\n<\/tr>\n | \n| 16<\/td>\n | 0.8-0.9<\/td>\n | 1.5-1.6<\/td>\n | 1.5-1.6<\/td>\n<\/tr>\n | \n| 18<\/td>\n | 0.65-0.75<\/td>\n | 1.3-1.4<\/td>\n | –<\/td>\n<\/tr>\n | \n| 20<\/td>\n | 0.5-0.6<\/td>\n | 0.9-1<\/td>\n | 1.2-1.3<\/td>\n<\/tr>\n | \n| 22<\/td>\n | 0.45-0.5<\/td>\n | 1-1.2<\/td>\n | 1.4-1.5<\/td>\n<\/tr>\n | \n| 25<\/td>\n | –<\/td>\n | 0.7-0.9<\/td>\n | 1.2-1.3<\/td>\n<\/tr>\n | \n| 30<\/td>\n | –<\/td>\n | –<\/td>\n | 1.2-1.3<\/td>\n<\/tr>\n | \n| 40<\/td>\n | –<\/td>\n | –<\/td>\n | 0.3-0.6<\/td>\n<\/tr>\n | \n| 50<\/td>\n | –<\/td>\n | –<\/td>\n | 0.2-0.3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n| V\u00fdkon laseru<\/td>\n | 6KW
\nfiber laser cutting parameters<\/td>\n | 12kw
\nfiber laser cutting parameters<\/td>\n | 20kw
\nfiber laser cutting parameters<\/td>\n<\/tr>\n | \n| GAS<\/td>\n | Nitrogen<\/td>\n | Nitrogen<\/td>\n | Nitrogen<\/td>\n<\/tr>\n | \n| Material<\/td>\n | Thickness
\n\uff08<\/span>mm)<\/span><\/td>\n | Speed [m\/min]<\/td>\n<\/tr>\n | \nStainless Steel<\/strong><\/td>\n| 1<\/td>\n | 40-50<\/td>\n | 50-60<\/td>\n | 50-60<\/td>\n<\/tr>\n | \n| 2<\/td>\n | 25-30<\/td>\n | 40-45<\/td>\n | 50-60<\/td>\n<\/tr>\n | \n| 3<\/td>\n | 15-18<\/td>\n | 30-35<\/td>\n | 40-45<\/td>\n<\/tr>\n | \n| 4<\/td>\n | 10-12<\/td>\n | 22-26<\/td>\n | 30-35<\/td>\n<\/tr>\n | \n| 5<\/td>\n | 7-8<\/td>\n | 15-18<\/td>\n | 22-24<\/td>\n<\/tr>\n | \n| 6<\/td>\n | 6-7<\/td>\n | 13-15<\/td>\n | 18-22<\/td>\n<\/tr>\n | \n| 8<\/td>\n | 3.5-3.8<\/td>\n | 8-10<\/td>\n | 13-16<\/td>\n<\/tr>\n | \n| 10<\/td>\n | 1.6-2<\/td>\n | 6.5-7.5<\/td>\n | 10-12<\/td>\n<\/tr>\n | \n| 12<\/td>\n | 1-1.2<\/td>\n | 5-5.5<\/td>\n | 8-10<\/td>\n<\/tr>\n | \n| 14<\/td>\n | 0.8-1<\/td>\n | 3-3.5<\/td>\n | 6-8<\/td>\n<\/tr>\n | \n| 16<\/td>\n | 0.5-0.6<\/td>\n | 2-2.3<\/td>\n | 5-6<\/td>\n<\/tr>\n | \n| 18<\/td>\n | 0.4-0.5<\/td>\n | 1.3-1.5<\/td>\n | 3.2-4<\/td>\n<\/tr>\n | \n| 20<\/td>\n | –<\/td>\n | 1.2-1.4<\/td>\n | 3-3.2<\/td>\n<\/tr>\n | \n| 25<\/td>\n | –<\/td>\n | 0.7-0.9<\/td>\n | 1.5-2<\/td>\n<\/tr>\n | \n| 35<\/td>\n | –<\/td>\n | –<\/td>\n | 1-1.2<\/td>\n<\/tr>\n | \n| 40<\/td>\n | –<\/td>\n | –<\/td>\n | 0.5-0.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Once material and thickness are clear, laser power mainly determines cutting speed and output capacity<\/strong>.<\/p>\nAt the same thickness:<\/p>\n \n- \n
Higher power = faster cutting speed<\/p>\n<\/li>\n - \n
Higher power = more parts completed per shift<\/p>\n<\/li>\n - \n
Higher power = better performance in batch and continuous production<\/p>\n<\/li>\n<\/ul>\n However, power increase does not bring unlimited benefits. Beyond actual production needs, higher power leads to diminishing speed gains while costs and energy consumption continue to rise. The goal is optimal efficiency<\/strong>, not maximum wattage.<\/p>\nBeam Quality Often Matters More Than Power<\/h2>\nMany buyers focus only on laser power and overlook beam quality.<\/p>\n With the same power:<\/p>\n | | | |
![\"high](\"https:\/\/www.fincmfuture.com\/wp-content\/uploads\/2026\/02\/high-power-fiber-laser-cutting-machine.webp\")
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