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Carbon Steel Laser Cutting Machines

AccTek carbon-steel laser cutting machines pair 1–40 kW fiber power with CNC automation for fast, burr-free cuts, slim heat zones, and high material yields across thin sheet to thick plate.
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Product Introduction

Carbon steel laser cutting machines are advanced tools designed to deliver high-speed, high-precision cutting of carbon steel in a wide range of thicknesses. Using powerful fiber laser technology, these machines produce clean, accurate cuts with minimal heat-affected zones, making them ideal for both high-volume industrial production and custom metal fabrication. Whether you’re processing thin sheets or thick plates, laser cutting offers exceptional edge quality and repeatability without the need for secondary finishing. Engineered for performance and efficiency, modern carbon steel laser cutters come equipped with CNC automation, real-time monitoring systems, and intelligent nesting software to maximize material utilization and reduce waste. With power options ranging from 1kW to 40kW or more, these machines can cut through carbon steel with ease, all while maintaining sharp detail and minimal distortion. Compared to traditional cutting methods like plasma or flame cutting, laser cutting offers superior precision, cleaner results, and lower overall operating costs. It’s also faster and more energy-efficient, especially for thin to medium-gauge steel. For industries such as automotive, construction, machinery, and metal fabrication, carbon steel laser cutting machines provide the reliability and versatility needed to meet tight deadlines and deliver top-tier results.

Types of Carbon Steel Laser Cutting Machines

Cutting Thickness Reference

Laser Power Material Thickness (mm) Cutting Speed (m/min) Actual Laser Power (W) Gas Pressure (bar) Nozzle Size (mm) Focus Position (mm) Cutting Height (mm)
1KW 1 10 1000 N2/Air 10 1.5S 0 1
2 4 1000 O2 2 1.2D 3 0.8
3 3 1000 O2 0.6 1.2D 3 0.8
4 2.3 1000 O2 0.6 1.2D 3 0.8
5 1.8 1000 O2 0.6 1.2D 3 0.8
6 1.5 1000 O2 0.6 1.5D 3 0.8
8 1.1 1000 O2 0.6 1.5D 3 0.8
1.5KW 1 20 1500 N2/Air 10 1.5S 0 1
2 5 1500 O2 2 1.2D 3 0.8
3 3.6 1500 O2 0.6 1.2D 3 0.8
4 2.5 1500 O2 0.6 1.2D 3 0.8
5 1.8 1500 O2 0.6 1.2D 3 0.8
6 1.4 1500 O2 0.6 1.5D 3 0.8
8 1.2 1500 O2 0.6 1.5D 3 0.8
10 1 1500 O2 0.6 2.0D 2.5 0.8
12 0.8 1500 O2 0.6 2.5D 2.5 0.8
14 0.65 1500 O2 0.6 3.0D 2.5 0.8
2KW 1 25 2000 N2/Air 10 1.5S 0 1
2 9 2000 N2/Air 10 2.0S -1 0.5
2 5.2 2000 O2 0.6 1.0D 3 0.8
3 4.2 2000 O2 0.6 1.0D 3 0.8
4 3 2000 O2 0.6 1.0D 3 0.8
5 2.2 2000 O2 0.6 1.2D 3 0.8
6 1.8 2000 O2 0.6 1.2D 3 0.8
8 1.3 2000 O2 0.6 2.0D 2.5 0.8
10 1.1 2000 O2 0.5 2.0D 2.5 0.8
12 0.9 2000 O2 0.5 2.5D 2.5 0.8
14 0.8 2000 O2 0.5 3.0D 2.5 0.8
16 0.7 2000 O2 0.6 3.5D 2.5 0.8
18 0.5 2000 O2 0.6 4.0D 3 0.8
3KW 1 28-35 3000 N2/Air 10 1.5S 0 1
2 16-20 3000 N2/Air 10 2.0S 0 0.5
2 3.8-4.2 2100 O2 1.6 1.0D +3 0.8
3 3.2-3.6 2100 O2 0.6 1.0D +4 0.8
4 3-3.2 2400 O2 0.6 1.0D +4 0.8
5 2.7-3 3000 O2 0.6 1.2D +4 0.8
6 2.2-2.5 3000 O2 0.6 1.2D +4 0.8
8 1.8-2.2 3000 O2 0.6 1.2D +4 0.8
10 1-1.3 3000 O2 0.6 1.2D +4 0.8
12 0.9-1 2400 O2 0.6 3.0D +4 0.8
14 0.8-0.9 2400 O2 0.6 3.0D +4 0.8
16 0.6-0.7 2400 O2 0.6 3.5D +4 0.8
18 0.5-0.6 2400 O2 0.6 4.0D +4 0.8
20 0.4-0.55 2400 O2 0.6 4.0D +4 0.8
4KW 1 28-35 4000 N2/Air 10 1.5S 0 1
2 12-15 4000 O2 10 2.0S -1 0.5
3 8-12 4000 O2 10 2.0S -1.5 0.5
3 4-4.5 1800 O2 0.6 1.2D +3 0.8
4 3-3.5 2400 O2 0.6 1.2D +3 0.8
5 2.5-3 2400 O2 0.6 1.2D +3 0.8
6 2.5-2.8 3000 O2 0.6 1.2D +3 0.8
8 2-2.3 3600 O2 0.6 1.2D +3 0.8
10 1.8-2 4000 O2 0.6 1.2D +3 0.8
12 1-1.2 1800-2200 O2 0.5 3.0D +2.5 0.8
14 0.9-1 1800-2200 O2 0.5 3.5D +2.5 0.8
16 0.7-0.9 2200-2600 O2 0.5 3.5D +2.5 0.8
18 0.6-0.7 2200-2600 O2 0.5 4.0D +2.5 0.8
20 0.55-0.65 2200-2600 O2 0.5 4.0D +3 0.8
22 0.5-0.6 2200-2800 O2 0.5 4.5D +3 0.8
6KW 1 35-45 6000 N2/Air 12 1.5S 0 1
2 20-25 6000 N2/Air 12 2.0S -1 0.5
3 12-14 6000 N2/Air 14 2.0S -1.5 0.5
4 8-10 6000 N2/Air 14 2.0S -2 0.5
5 6-7 6000 N2/Air 16 3.0S -2.5 0.5
6 5-6 6000 N2/Air 16 3.5S -3 0.5
3 3.5-4.2 2400 O2 0.6 1.2E +3 0.8
4 3.3-3.8 2400 O2 0.6 1.2E +3 0.8
5 3-3.6 3000 O2 0.6 1.2E +3 0.8
6 2.7-3.2 3300 O2 0.6 1.2E +3 0.8
8 2.2-2.5 4200 O2 0.6 1.2E +3 0.8
10 2.0-2.3 5500 O2 0.6 1.2E +4 0.8
12 0.9-1 2200 O2 0.6 3.0D +2.5 0.8
12 1.9-2.1 6000 O2 0.6 1.2E +5 0.8
14 0.8-0.9 2200 O2 0.6 3.5D +2.5 0.8
14 1.4-1.7 6000 O2 0.6 1.4E +5 1
16 0.8-0.9 2200 O2 0.6 4.0D +2.5 0.8
16 1.2-1.4 6000 O2 0.6 1.4E +6 1
18 0.65-0.75 2200 O2 0.6 4.0D +2.5 0.8
18 0.8 6000 O2 0.6 1.6S +12 0.3
20 0.5-0.6 2400 O2 0.6 4.0D +3 0.8
20 0.6-0.7 6000 O2 0.6 1.6S +13 0.3
22 0.45-0.5 2400 O2 0.6 4.0D +3 0.8
22 0.5-0.6 6000 O2 0.6 1.6S +13 0.3
12KW 1 50-60 12000 N2/Air 12 1.5S 0 1
2 35-40 12000 N2/Air 12 2.0S 0 0.5
3 28-33 12000 N2/Air 13 2.0S 0 0.5
4 20-24 12000 N2/Air 13 2.5S 0 0.5
5 15-18 12000 N2/Air 13 2.5S 0 0.5
6 10-13 12000 N2/Air 13 2.5S 0 0.5
8 7-10 12000 N2/Air 13 3.0S -1.5 0.5
10 6-6.5 12000 N2/Air 13 4.0S -3 0.5
10 2-2.3 6000 O2 0.6 1.2E +6 0.8
12 1.8-2 7500 O2 0.6 1.2E +7 0.8
14 1.6-1.8 8500 O2 0.6 1.4E +7 0.8
16 1.5-1.6 9500 O2 0.6 1.4E +8 0.8
20 1.3-1.4 12000 O2 0.6 1.6E +8 0.8
22 0.9-1 12000 O2 0.7 1.8E +9 0.8
22 1-1.2 12000 O2 0.7 1.4SP +11 0.5
25 0.7-0.9 12000 O2 0.7 1.8E +11 0.8
25 0.8-1 12000 O2 0.7 1.5SP +12 0.5
12 3-3.5 12000 O2 1 1.6SP -10 1.5
14 3-3.2 12000 O2 1 1.6SP -10 1.5
16 2.8-3 12000 O2 1 1.6SP -12 1.5
20 2-2.3 12000 O2 1.2 1.6SP -12 1.5
25 1.1-1.3 12000 O2 1.3 1.8SP -14 1.5
30 0.9-1 12000 O2 1.4 1.8SP -14 1.5
20KW 5 23-28 20000 N2/Air 8 3.0S 0 0.5
6 18-20 20000 N2/Air 8 3.0S -0.5 0.5
8 14-16 20000 N2/Air 8 3.0S -1 0.5
10 9-12 20000 N2/Air 8 3.5S -1.5 0.5
12 8-10 20000 N2/Air 8 3.5S -2 0.5
14 6-8 20000 N2/Air 8 4.0S -3 0.5
16 5-6 20000 N2/Air 8 5.0S -4 0.5
18 3.2-4 20000 N2/Air 10 6.0S -6 0.5
20 2.7-3.2 20000 N2/Air 10 6.0S -8 0.5
10 2-2.3 6000 O2 0.6 1.2E +8 0.8
12 1.8-2 7500 O2 0.6 1.2E +9 0.8
14 1.6-1.8 8500 O2 0.6 1.4E +10 0.8
16 1.5-1.6 9500 O2 0.6 1.4E +11 0.8
20 1.3-1.4 12000 O2 0.6 1.6E +12 0.8
22 1.2-1.3 20000 O2 0.7 1.8E +12.5 0.8
22 1.4-1.5 20000 O2 0.7 1.4SP +13 0.5
25 1.2-1.4 20000 O2 1.0 1.5SP +13 0.4
30 1.2-1.3 20000 O2 1.2 1.5SP +13.5 0.4
40 0.6-0.9 20000 O2 1.4 1.6SP +14 0.4
40 0.3-0.6 20000 O2 1.6 1.8E +13 2
50 0.2-0.3 20000 O2 1.6 1.8E +13 2
12 3.2-3.5 20000 O2 1 1.6SP -10 1.5
14 3-3.2 20000 O2 1 1.6SP -10 1.5
16 3-3.1 20000 O2 1 1.6SP -12 1.5
20 2.8-3 20000 O2 1.2 1.6SP -12 1.5
25 2.4-2.6 20000 O2 1.3 1.8SP -14 1.5
30 1.7-1.9 20000 O2 1.4 1.8SP -14 1.5
35 1.4-1.6 20000 O2 1.4 2.0SP -15 1.5
40 1-1.2 20000 O2 1.5 2.5S -15 1.5
45 0.8-0.9 20000 O2 1.6 2.5S -17 1.5
30KW 5 24-30 30000 N2/Air 8 3.0S 0 0.5
6 25-28 30000 N2/Air 8 3.0S -0.5 0.5
8 18-22 30000 N2/Air 8 3.0S -1 0.5
10 14-17 30000 N2/Air 8 3.5S -1.5 0.5
12 11-13 30000 N2/Air 8 3.5S -2 0.5
14 8-10 30000 N2/Air 8 4.0S -3 0.5
16 7.5-8.5 30000 N2/Air 8 5.0S -4 0.5
18 5.5-6.5 30000 N2/Air 10 6.0S -6 0.5
20 5-5.5 30000 N2/Air 10 6.0S -8 0.5
25 3-3.5 30000 N2/Air 10 6.0S -12 0.5
10 2-2.3 6000 O2 0.6 1.2E +8 0.8
12 1.8-2 7500 O2 0.6 1.2E +9 0.8
14 1.6-1.8 8500 O2 0.6 1.4E +10 0.8
16 1.6-1.8 9500 O2 0.6 1.4E +11 0.8
20 1.5-1.6 12000 O2 0.6 1.6E +12 0.8
22 1.4-1.5 20000 O2 0.7 1.4SP +13 0.5
25 1.2-1.4 20000 O2 1.0 1.5SP +13 0.4
30 1.2-1.3 20000 O2 1.2 1.5SP +13.5 0.4
40 0.6-0.9 20000 O2 1.4 1.6SP +14 0.4
40 0.3-0.6 20000 O2 1.6 1.8E +13 2
50 0.3-0.5 20000 O2 1.6 1.8E +13 2
50 0.6-0.8 30000 O2 1.6 1.8SP +14 0.4
12 3.2-3.5 30000 O2 1 1.6SP -10 1.5
14 3-3.2 30000 O2 1 1.6SP -10 1.5
16 3-3.1 30000 O2 1 1.6SP -12 1.5
20 2.8-3 30000 O2 1.2 1.6SP -12 1.5
25 2.6-2.8 30000 O2 1.3 1.8SP -14 1.5
30 2.2-2.6 30000 O2 1.4 1.8SP -14 1.5
35 1.4-1.6 30000 O2 1.4 2.0SP -15 1.5
40 1-1.4 30000 O2 1.5 2.5S -15 1.5
45 0.8-0.9 30000 O2 1.6 2.5S -17 1.5
40KW 5 28-32 40000 N2/Air 8 3.0B 0 0.3
6 25-28 40000 N2/Air 8 3.0B 0 0.3
8 22-24 40000 N2/Air 8 3.0B 0 0.3
10 16-20 40000 N2/Air 8 3.5B -0.5 0.3
12 14-17 40000 N2/Air 8 3.5B -0.5 0.3
14 11-13 40000 N2/Air 8 5.0B -1 0.3
16 8-9.5 40000 N2/Air 8 5.0B -1 0.3
18 7.5-8.5 40000 N2/Air 8 6.0B -2 0.3
20 7-8 40000 N2/Air 8 6.0B -3 0.3
25 5-5.5 40000 N2/Air 6 8.0B -5 0.3
30 3-4 40000 N2/Air 6 8.0B -7 0.3
40 1.5-2 40000 N2/Air 4 10.0ECU -13 0.3
10 2-2.3 6000 O2 0.6 1.2E +11 0.8
12 1.8-2 7500 O2 0.6 1.2E +12 0.8
14 1.6-1.8 8500 O2 0.6 1.4E +13 0.8
16 1.6-1.8 9500 O2 0.6 1.4E +14 0.8
20 1.5-1.6 12000 O2 0.6 1.6E +15 0.8
22 1.4-1.5 18000 O2 0.7 1.4SP +17 0.5
25 1.2-1.4 18000 O2 0.65 1.6SP +19 0.3
30 1.2-1.3 18000 O2 0.6 1.8SP +23 0.3
40 0.9-1.1 26000 O2 0.8 2.2SP +25 0.3
40 0.3-0.6 20000 O2 1.6 1.8E +18 2
50 0.3-0.5 25000 O2 1.6 1.8E +18 2
50 0.7-0.9 40000 O2 1.2 2.2SP +25 0.3
60 0.6-0.8 40000 O2 1.5 2.4SP +25 0.3
70 0.5-0.7 40000 O2 1.5 2.4SP +25 0.3
12 3.2-3.5 20000 O2 1 1.6SP -9 1.5
14 3-3.2 20000 O2 1 1.6SP -10 1.5
16 3-3.1 20000 O2 1 1.6SP -10 1.5
20 2.8-3.2 20000 O2 1 1.8SP -11 1.5
25 2.4-2.8 40000 O2 1 2.5SP -17 2.5
30 2.4-2.6 40000 O2 1.2 2.5SP -18 1.5
35 2.3-2.6 40000 O2 1.3 2.5SP -20 1.5
40 2-2.3 40000 O2 1.5 3.0SS -23 1.5
50 1.2-1.6 40000 O2 1.6 3.0SS -25 1.5
60 1-1.3 40000 O2 1.8 3.0SS -27 3
70 0.6-0.8 40000 O2 2.0 3.0SS -34 3

Compatible Carbon Steel Grades

  • A36
  • A283 Grade C
  • A285 Grade C
  • A516 Grade 70
  • A572 Grade 50
  • A588
  • A992
  • 1010
  • 1015
  • 1018
  • 1020
  • 1022
  • 1025
  • 1030
  • 1035
  • 1040
  • 1045
  • 1050
  • 1055
  • 1060
  • 1065
  • 1070
  • 1075
  • 1080
  • 1085
  • 1090
  • 1095
  • 1141
  • 1144
  • 1215
  • 12L14
  • 4130
  • 4140
  • 8620
  • C1010
  • C1020
  • C1045
  • EN1A
  • EN8
  • S355 (EN 10025)

Application of Carbon Steel Laser Cutting Machines

Carbon steel laser cutting machines are used across a wide range of industries that require precise, efficient, and high-speed metal fabrication. In construction and infrastructure, they are essential for producing beams, brackets, supports, and structural components. The automotive industry relies on laser cutting for body frames, chassis parts, and custom modifications that demand tight tolerances and clean edges. In agricultural and heavy equipment manufacturing, laser cutting machines are used to fabricate durable carbon steel parts like housings, blades, and structural frames. Machinery and equipment manufacturers use them to produce gears, enclosures, panels, and mechanical components with high repeatability. Metal fabrication shops benefit from laser cutting’s ability to handle both small-batch custom orders and high-volume production runs with minimal setup time. From simple cuts to complex geometries, carbon steel laser cutting machines provide the precision, speed, and reliability needed to meet modern manufacturing standards across diverse applications.
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples
Carbon Steel Laser Cutting Samples

Customer Testimonials

Our old plasma table struggled on a thick carbon plate, so we moved to this fiber laser. It slices 20 mm mild steel cleanly with no dross, and edge squareness is spot on. Nesting software boosted sheet yield by fifteen percent. Power draw is lower, helping monthly energy costs.
BrianPlant Manager
Switching from oxy-fuel to this fiber unit saved hours per part. Edges on a 10 mm carbon plate come out smooth, and holes stay perfectly round. The height sensor follows the warped sheet without crashing. Remote diagnostics sorted one gas valve alarm in minutes, keeping uptime above ninety-seven percent.
JeanFabrication Engineer
I handle custom gates and frames. The laser slices 6 mm hot-rolled steel with almost no slag, so cleanup is quick. Material mapping shows exactly how many parts fit per sheet, cutting waste. Startup time is under two minutes, letting us tackle small rush orders profitably.
MariaWorkshop Owner
We run thick carbon flanges up to 25 mm. The machine’s high power pierces cleanly, and oxygen assist leaves consistent edges ready for bevel. Auto-focus head hasn’t needed a manual tweak. Maintenance reminders pop up on schedule, making my life easier. Throughput grew forty percent versus plasma.
RajivOperations Director
Daily care takes ten minutes: wipe lens, check chiller, empty slag bin. The onboard dashboard shows laser hours and component temps, so I schedule service before faults. We changed a nozzle once; the swap took five minutes. Reliability means electricians no longer get urgent calls at night.
LenaMaintenance Lead
Parts from this cutter fit together straight away. Bevel cutting for 45-degree joints is accurate, reducing grinder work. The control stores different carbon grades, so switching from mild to high-strength takes seconds. Fume extraction is strong, keeping the bay clear and greatly improving welder comfort.
TomWelding Foreman

Comparison VS Other Cutting Technologies

Feature Laser Cutting Plasma Cutting Waterjet Cutting Flame Cutting
Cutting Precision Very High Moderate High Low
Edge Quality Smooth, clean edges Acceptable, may need finishing Excellent, no burrs Rough, oxidized edges
Minimum Kerf Width Narrow (0.1-0.3 mm) Medium (1-3 mm) Medium (~1 mm) Wide (>3 mm)
Heat-Affected Zone (HAZ) Minimal Large None Very large
Cutting Speed (Thin Sheet) Very fast Fast Slow Slow
Material Thickness Range Thin to medium (excellent control) Medium to thick Thin to thick Thick only
Edge Oxidation Low (especially with nitrogen assist) Moderate None High
Suitability for Fine Detail Excellent Limited Good Poor
Post-Processing Needed Minimal Often required Minimal Often required
Initial Equipment Cost High Moderate High Low
Operating Cost Moderate to low Low High (abrasives, water treatment) Low
Environmental Impact Low (clean and energy-efficient) Fumes and metal dust Water/abrasive waste High emissions and slag
Noise Level Low High Low Very high
Automation & CNC Compatibility Excellent Good Good Limited
Best Use Cases Precision fabrication, clean finishes Cost-effective medium-thickness cutting Thick material, no heat distortion Heavy-duty cutting of thick low-alloy steel

Why Choose Us

AccTek Group is a leading laser cutting machine manufacturer, dedicated to delivering high-quality, precision-driven solutions for industries worldwide. With years of experience in laser technology, we design and produce laser cutting machines that enhance efficiency, reduce production costs, and improve overall productivity. Our machines are widely used in metal fabrication, automotive, aerospace, and other industries that require precise and efficient cutting. We prioritize technological innovation, strict quality control, and exceptional customer service to ensure that every machine meets international standards. Our goal is to provide durable, high-performance solutions that help businesses optimize their operations. Whether you need a standard machine or a customized cutting system, AccTek Group is your trusted partner for reliable laser cutting solutions.

Advanced Technology

Our laser cutting machines feature high-speed, precision cutting with the latest laser technology, ensuring smooth edges, minimal waste, and superior efficiency across various materials and thicknesses.

Reliable Quality

Each machine undergoes rigorous quality control and durability testing to ensure long-term stability, low maintenance, and consistent high performance, even under demanding industrial conditions.

Comprehensive Support

We provide full technical support, including installation guidance, operator training, and after-sales service, ensuring smooth machine operation and minimal downtime for your business.

Cost-Effective Solutions

Our machines offer high performance at competitive prices, with customizable options to fit different production needs, helping businesses maximize their investment without compromising on quality.

Related Resources

What Is Laser Cutting

What Is Laser Cutting?

2025-05-05

Discover the fundamentals of laser cutting, its process, types, applications, and benefits. Learn how this advanced technology is transforming modern manufacturing.

Frequently Asked Questions

Can Lasers Cut Carbon Steel?
Fiber laser-cutting machines are powerful tools engineered for precision metal processing, and carbon steel is one of the materials they handle exceptionally well. Thanks to the fiber laser’s shorter wavelength and higher absorption efficiency in metals, it offers fast, clean, and highly controllable cuts on a wide range of carbon steel grades and thicknesses.

  • Cutting Capabilities: Fiber lasers can cut thin to thick carbon steel sheets with excellent edge quality. Thickness capacity depends on the power of the laser—machines with power levels of 1–40 kW are common in industry, with high-end models cutting up to 25 mm or more. Thinner carbon steels (under 6 mm) can be cut with near-mirror-smooth edges and minimal dross.
  • Assist Gas: When cutting carbon steel with a fiber laser, oxygen is typically used as the assist gas. It reacts with the molten metal to generate additional heat, increasing cutting speed and enabling deeper penetration. However, this oxygen reaction causes oxidation along the cut edge, which may require cleaning if a pristine, weld-ready surface is needed.
  • Cut Quality and Performance: Fiber lasers produce highly consistent, narrow kerfs with minimal heat-affected zones (HAZ) when properly configured. They are especially well-suited to detailed contour cuts, tight tolerances, and high-speed production. The edge may be slightly oxidized due to the oxygen assist but is usually free of heavy burrs or slag.
  • Material Considerations: Carbon steel comes in many forms, from mild to high-carbon content. Mild steel is the easiest to cut, offering clean results and minimal thermal distortion. High-carbon steel can harden at the edge due to heat, so cutting parameters may need to be adjusted to reduce brittleness or cracking.

Fiber laser cutting systems are the industry standard for carbon steel cutting due to their speed, energy efficiency, and excellent cut quality. With the right settings and setup, they deliver superior results for everything from sheet metal fabrication to heavy-plate processing.
Fiber laser-cutting machines are powerful tools for processing carbon steel, and the choice of assist gas plays a critical role in cut quality, speed, and edge condition. When cutting carbon steel, oxygen is the most commonly used gas, although nitrogen and compressed air can also be used depending on the application.

  • Oxygen: Oxygen is the primary assist gas used when cutting carbon steel with a fiber laser. It reacts chemically with the molten steel, generating additional heat in an exothermic reaction. This helps the laser cut thicker material faster and with less laser power. Oxygen also aids in blowing the molten material out of the kerf, keeping the cut clean and continuous. However, this reactivity also causes the edges to oxidize, often leaving a darker, rougher finish. In most structural or industrial applications, this isn’t a problem. But for parts requiring welding, painting, or high aesthetics, post-processing like grinding or cleaning may be necessary.
  • Nitrogen: In some cases, especially when a clean, bright, oxidation-free edge is needed, nitrogen is used instead. As an inert gas, nitrogen doesn’t react with the material—it simply forces molten metal out of the kerf using high-pressure flow. The result is a smoother, more weld-ready edge, but cutting speeds are slower, and nitrogen use can be more expensive due to higher consumption and gas costs.
  • Compressed Air: For light-duty or low-cost cutting, compressed air can be used on thin carbon steel (typically under 3 mm). While it doesn’t deliver the same cut quality as oxygen or nitrogen, it can be good enough for non-cosmetic or prototype parts. Air contains both oxygen and nitrogen, so it behaves somewhere in between but offers less control and consistency.

Choosing the right gas depends on the application requirements—speed, edge quality, post-processing, and cost all influence the decision. With proper setup, fiber lasers can deliver efficient, high-quality cuts on carbon steel using the assist gas that best fits the job.
Fiber laser-cutting machines are highly effective for cutting carbon steel, and their price can vary widely based on power level, build quality, cutting size, and included features. Most machines suitable for carbon steel fall within a $15,000 to $200,000 price range, covering everything from compact shop models to full-scale industrial systems.

  • Entry-Level Machines ($15,000–$40,000): These compact fiber laser cutters typically have power ratings between 1 kW and 6 kW, and are ideal for small businesses, job shops, or light fabrication work. They can cut carbon steel up to around 6–10 mm thick with decent precision. Most models at this level come with basic software, limited cutting bed sizes (often under 3000×1500 mm), and modest automation features.
  • Mid-Range Industrial Machines ($40,000–$100,000): Mid-range systems feature 12 kW to 20 kW lasers, larger bed sizes (up to 4000×2000 mm), and better motion systems and cooling units. These machines can handle thicker carbon steel (up to 16–20 mm) and offer higher productivity. Many also include improved control software, auto-focus cutting heads, and better integration with CAD/CAM systems.
  • High-End Industrial Machines ($100,000–$200,000+): Premium machines in this range offer power ratings from 20 kW to 40 kW+, high-speed cutting heads, automated loading/unloading, and advanced features like real-time monitoring, edge detection, and multi-gas compatibility. Designed for heavy-duty or high-volume use, these systems can cut carbon steel well beyond 20 mm thick and are common in automotive, aerospace, and large-scale fabrication environments.

Machine cost should always be considered alongside operating costs (power, gas, maintenance), training, and support. A well-chosen machine pays for itself in speed, precision, and long-term reliability when cutting carbon steel.
Fiber laser-cutting machines are highly effective at processing carbon steel, offering impressive speed and precision when set up correctly. The cutting speed depends on several factors, including material thickness, laser power, gas type, and machine configuration. When properly optimized, fiber lasers can cut carbon steel quickly while maintaining high-quality edges and minimal dross.

  1. Cutting Speed by Thickness and Laser Power
  • Laser speed decreases as material thickness increases, but fiber lasers still perform efficiently across a wide range.
  • 1 mm thick carbon steel: Up to 10,000–20,000 mm/min with a 1.5–2 kW laser
  • 3 mm thick carbon steel: Around 3,000–4,000 mm/min with a 2–4 kW laser
  • 6 mm thick carbon steel: Approximately 2,000–3,500 mm/min with a 3–6 kW laser
  • 10 mm thick carbon steel: Between 1,500–2,500 mm/min with a 4–6 kW laser
  • 20 mm thick carbon steel: Typically 500–2,500 mm/min using high-power lasers (6–12 kW)
  1. Assist Gas and Its Role
  • Oxygen is most commonly used for cutting carbon steel. It reacts with the steel, producing additional heat that speeds up cutting, especially useful on thicker plates.
  • Nitrogen can also be used when a clean, oxide-free edge is required, but this generally results in slower cutting speeds due to the lack of the exothermic reaction oxygen provides.
  1. Automation and Machine Features
  • Cutting speed isn’t just about raw laser power. Advanced fiber lasers use autofocus heads, fast servo motors, and real-time monitoring systems to maintain high speeds across complex paths. This matters most in high-volume production environments where every second counts.

When properly configured, fiber lasers offer one of the fastest, most efficient methods for cutting carbon steel in both light fabrication and heavy industrial applications.
Fiber laser-cutting machines are precision tools capable of producing highly accurate and repeatable results when cutting carbon steel. These machines are widely used across manufacturing, automotive, and metal fabrication industries where tight tolerances and consistent part quality are critical.

  • Typical Cutting Accuracy: Fiber lasers cutting carbon steel generally achieve dimensional tolerances of ±0.1 mm, though high-end systems with advanced motion control and beam stabilization can reach ±0.05 mm or better. This level of precision allows for parts that fit together with minimal finishing or adjustment.
  • Kerf Width and Consistency: The kerf width—the amount of material removed during the cut—is typically 0.1 to 0.5 mm, depending on laser settings, nozzle size, and material thickness. This narrow kerf helps reduce waste and ensures high detail resolution on intricate designs or tight corners.
  • Edge Quality and Surface Finish: Laser-cut carbon steel edges are smooth, uniform, and free from burrs when the machine is correctly set up. Thinner sheets cut cleanly and may need no secondary processing. Thicker sections may show slight dross buildup on the underside, but this is usually minimal and manageable with proper gas pressure and nozzle distance.

Laser cutting delivers reliable, high-precision results on carbon steel, especially when combined with well-maintained equipment and properly optimized settings. It’s the preferred method when both accuracy and efficiency matter.
Fiber laser-cutting machines are powerful and precise tools for processing carbon steel, with their cutting capacity directly tied to the laser’s wattage. Higher-power lasers deliver deeper, faster cuts, making it possible to handle anything from thin sheet metal to thick structural plates. Here’s a general guide to maximum cutting thicknesses by fiber laser power:

  • 1KW: Cuts carbon steel from 1 to 8 mm
  • 5KW: Handles thicknesses between 1 and 14 mm
  • 2KW: Cuts effectively from 1 to 18 mm
  • 3KW: Suitable for 1 to 20 mm
  • 4KW: Cuts up to 22 mm
  • 6KW: Capable of cutting 1 to 25 mm
  • 12KW: Reaches up to 30 mm
  • 20KW: Handles thick sections up to 45 mm
  • 30KW: Cuts carbon steel up to 50 mm
  • 40KW: Can cut as thick as 70 mm

Selecting the right laser power ensures you stay within the optimal performance range of the machine, balancing cut quality, speed, and efficiency across different carbon steel thicknesses.
Fiber laser-cutting machines are capable of producing clean, precise cuts in carbon steel, but several factors can cause rough edges, dross buildup, excessive burrs, or discoloration if the process isn’t optimized. These issues often result in added post-processing time and wasted material, so understanding the causes is key to maintaining consistent edge quality.

  • Incorrect Cutting Speed: One of the most common causes of poor edge quality is using the wrong cutting speed. Too slow, and the laser overheats the edge, causing melt-back, dross accumulation, and an overly wide kerf. Too fast, and the laser may not fully penetrate, leading to incomplete cuts or jagged edges.
  • Improper Focus Setting: If the laser beam isn’t focused correctly at or just below the material surface, it can cause a wider kerf and inconsistent edges. A defocused beam spreads energy across a larger area, reducing cutting precision and causing edge tapering or uneven surfaces.
  • Low or Unstable Assist Gas Pressure: Oxygen is the standard assist gas for cutting carbon steel. If the pressure is too low or the flow is unstable, it won’t effectively blow molten material from the kerf. This leads to burrs, dross, and rough edges. Dirty nozzles or misaligned gas jets also cause inconsistent gas flow, reducing cut quality.
  • Contaminated or Coated Material Surface: Oil, rust, mill scale, or protective films on the surface can interfere with beam absorption and gas reaction. These contaminants cause inconsistent heating, leading to rough cuts, sparks, and excessive residue along the edge.
  • Worn or Damaged Nozzle: The nozzle directs both the laser beam and the assist gas. A worn, bent, or misaligned nozzle can cause gas turbulence and beam distortion, resulting in uneven or rough edge finishes. Regular maintenance and proper alignment are essential.
  • Inappropriate Laser Power for Material Thickness: Using too little power for thick carbon steel will leave uncut sections or rough, jagged edges. Conversely, too much power can overburn thin material, leading to charring, wide kerfs, and excessive HAZ.
  • Machine Vibration or Unstable Workpiece: If the material isn’t firmly secured or if the machine’s motion system isn’t smooth, even small vibrations can cause irregular edge lines, waviness, or cut deviation, especially on curves or fine details.

High-quality edge results require consistent machine maintenance, clean material, stable settings, and careful calibration. When all variables are aligned, fiber lasers can deliver sharp, burr-free cuts that minimize finishing work and material loss.
Fiber laser-cutting machines are highly effective for cutting carbon steel, but the process does produce harmful fumes and emissions that must be carefully managed. As the laser melts and vaporizes the metal, it releases fine particles and gases into the air that pose health and safety risks without proper ventilation.
  1. What’s in the Fumes
  • Iron Oxide Particles: the most common byproduct, which can irritate the lungs.
  • Manganese Fumes: present in many steel alloys, and potentially harmful with long-term exposure.
  • Carbon Monoxide (CO): formed during incomplete combustion, especially when cutting with oxygen.
  • Nitrogen Oxides (NOₓ) and ozone: generated by the laser beam interacting with ambient air.
  • Vapors from Surface Contaminants, such as paint, oil, or rust inhibitors, can release additional toxic or carcinogenic compounds.
  1. How Oxygen Assist Affects Emissions
  • Carbon steel is usually cut with oxygen-assist gas, which reacts with the metal and accelerates the cutting process through oxidation. This reaction increases the thermal load and fume production, especially on thicker plates. Compared to nitrogen, oxygen generates more visible smoke, more particulates, and higher temperatures, which amplify the need for proper exhaust systems.
  1. Fume Extraction and Safety Systems
  • Fume extraction systems with HEPA filters for capturing metal dust.
  • Activated carbon filters absorb chemical gases and odors.
  • Enclosed cutting beds or hoods to isolate emissions at the source.
  • Routine maintenance to ensure filters and fans operate efficiently.

While fiber laser cutting machines deliver clean, precise cuts in carbon steel, they should always be used with strict fume control protocols to protect worker health and meet regulatory safety standards.

Get Carbon Steel Cutting Solutions

Maximize your production potential with our high-performance carbon steel laser cutting machines. Designed for precision, speed, and reliability, these machines cut everything from thin sheet to thick plate with clean edges, tight tolerances, and minimal post-processing. Whether you’re fabricating structural components, machinery parts, or custom assemblies, our systems deliver consistent results that meet industrial-grade standards.
We offer a complete range of laser cutting solutions tailored to your specific material thickness, production volume, and workflow requirements. Equipped with powerful fiber lasers, CNC automation, and intelligent control software, our machines help you reduce waste, improve cut quality, and boost throughput.
From consultation and machine selection to installation, training, and long-term support, our expert team is with you every step of the way. Ready to upgrade your carbon steel cutting capabilities? Contact us today for professional advice and a custom quote that fits your operation.
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