If you’re considering a 12000W fiber laser cutting machine, it’s important to know its cutting capabilities for different materials. This guide explains the batch cutting thickness, maximum cutting thickness, and cutting speeds for carbon steel, stainless steel, aluminum, brass, and copper—so you can choose the right power level for your needs.
Carbon Steel Cutting Thickness and Speed
| Thickness | Cutting Speed | Gas Used | Cutting Method |
|---|---|---|---|
| 10 mm | 6 – 6.5 m/min | Nitrogen / Air | Standard |
| 25 mm | 0.8 – 1 m/min | Oxygen | Positive focus cutting |
| 30 mm | 0.9 – 1 m/min | Oxygen | Negative focus cutting |
| Max: 40 mm | 0.25 – 0.3 m/min | Oxygen | Limit cutting |
Note: Positive focus provides smoother cuts at mid-range thickness. For thicker cuts (30 mm+), negative focus helps achieve better penetration.
Stainless Steel Cutting Thickness and Speed
| Thickness | Cutting Speed | Gas Used | Notes |
|---|---|---|---|
| 25 mm | 0.7 – 0.9 m/min | Nitrogen | Clean edges, no oxidation |
| 25 mm | 0.7 – 1 m/min | Air | Cost-saving alternative |
| Max: 30 mm | 0.3 – 0.6 m/min | Air | Slightly rougher edges |
| Max: 40 mm | 0.15 – 0.2 m/min | Nitrogen | Limit cutting |
Tip: Nitrogen gives better edge quality, while air is more economical for general use.
Aluminum Alloy Cutting Thickness and Speed
| Thickness | Cutting Speed | Gas Used | Notes |
|---|---|---|---|
| 25 mm | 0.5 – 0.7 m/min | Nitrogen | Batch cutting |
| Max: 40 mm | 0.15 – 0.2 m/min | Nitrogen | Use with caution (limit range) |
Caution: Aluminum reflects laser light more than steel. Avoid frequent use at maximum thickness to protect optics.
Brass Cutting Thickness and Speed
| Thickness | Cutting Speed | Gas Used | Notes |
|---|---|---|---|
| 14 mm | 1.2 – 1.4 m/min | Nitrogen | Batch cutting |
| Max: 16 mm | 0.8 – 1.0 m/min | Nitrogen | Limit cutting |
Copper (Red Copper) Cutting Thickness and Speed
| Thickness | Cutting Speed | Gas Used | Notes |
|---|---|---|---|
| 8 mm | 2.0 – 2.5 m/min | High-pressure O₂ | Best with high reflectivity |
Reminder: Copper, brass, and aluminum are highly reflective. They absorb less laser energy, making them harder to cut at high thickness. Do not attempt maximum thickness cuts frequently for these materials.
Choose the Right Power Range
A 12000W fiber laser cutting machine offers impressive capabilities, especially for:
- Carbon steel up to 40 mm
- Stainless steel up to 40 mm
- Aluminum alloy up to 25 mm for regular cutting
- Copper and brass up to 8–16 mm depending on gas and finish
However, keep in mind:
- Maximum thickness = slower speed + lower edge quality
- Batch cutting range is your safe zone for high productivity
Always match your material and application to the right power level. Don’t just chase the highest wattage—use it wisely.
