What is mixed gas laser cutting and how does it work?

Mixed gas laser cutting uses a precision blend of nitrogen (N₂) and oxygen (O₂) — typically 95% N₂ and 5% O₂ — as the auxiliary gas. This micro-oxygen mixture accelerates the cutting speed dramatically compared to pure oxygen or nitrogen, while producing clean, burr-free edges on carbon steel.

How much faster is mixed gas compared to pure oxygen cutting?

Mixed gas cutting is 2.5× to 7× faster than pure oxygen cutting depending on material thickness. For example: 6mm carbon steel cuts at ~18 m/min with mixed gas vs ~2.5 m/min with pure O₂. 20mm carbon steel cuts at ~3-4 m/min vs ~1.1-1.5 m/min with O₂.

What laser power levels are supported by the EUCHIO Mixed Gas Device?

The device supports laser machines from 3KW to 60KW. 3KW handles up to 2mm carbon steel, 6KW up to 6mm, 12KW up to 16mm, 20KW up to 25mm, 30KW up to 30mm, 40KW up to 35mm, and 60KW up to 45mm carbon steel. It is compatible with all major laser brands including HAN'S, DNE, PENTA, LEAD, HSG, BODOR, JIATAI, HG LASER, and XUNLEI.

Does mixed gas eliminate burrs in laser cutting?

Yes. Mixed gas cutting produces zero burrs on carbon steel, compared to pure oxygen cutting which often leaves oxidized edges requiring secondary deburring. The N₂/O₂ ratio prevents excessive oxidation during the cutting process.

How much nitrogen can be saved by using mixed gas instead of pure N₂?

Mixed gas is designed for speed and cut quality. The small oxygen percentage (typically 5%) enables micro-oxygen cutting that delivers burr-free edges and 3× faster speeds on carbon steel. The device consumes only 2 kWh per 24 hours — near-zero electricity cost.

What is the gas consumption and power requirement of the mixed gas device?

The EUCHIO Mixed Gas Device has an input pressure requirement of 20–25 bar from liquid N₂ and O₂ storage tanks, with output pressure of 12–16 bar to the laser machine. Maximum flow rate is 200 m³/h. Power consumption is only 2 kWh per 24 hours — essentially maintenance-free.

Can one mixed gas device supply up to three laser machines simultaneously?

Yes. The EUCHIO Mixed Gas supports a stable one-to-three configuration. One mixing station can simultaneously supply multiple laser machines of different power levels with stable gas mixing ratios.

What materials can be cut with mixed gas?

Mixed gas is primarily used for carbon steel cutting where it delivers the best speed and quality. It also works well for stainless steel and aluminum. For aluminum specifically, mixed gas produces clean, burr-free edges on sheets from 1mm to 4mm+ thickness.

Technical Data

20kW Laser Cutting Parameters & Gas Speed Data

Carbon steel cutting speed parameters: 3kW to 60kW. Compare mixed gas vs oxygen cutting speeds. Data from real end user deployments. Also applies to aluminum and thick plate cutting optimization.

3KW Best for ≤2mm Carbon Steel (Thin Plate)

Thickness	Mixed Gas Speed	Gas Pressure	Nozzle
1mm	28–35 m/min	10 bar	1.5S
2mm	16–20 m/min	10 bar	2.0S

Note: 3KW parameters based on RFL-3000 (50μm fiber) with N₂/O₂ mixed gas. Thin plate high-speed cutting — ideal for sheet metal shops.

6KW Best for ≤6mm Carbon Steel

Thickness	Mixed Gas Speed	Gas Pressure	Nozzle
1mm	35–45 m/min	12 bar	1.5S
2mm	20–25 m/min	12 bar	2.0S
3mm	12–14 m/min	14 bar	2.0S
4mm	8–10 m/min	14 bar	2.0S
5mm	6–7 m/min	16 bar	3.0S
6mm	5–6 m/min	16 bar	3.5S

Note: 6KW parameters based on RFL-6000 (100μm fiber) with N₂/O₂ mixed gas. Contact us for O₂ comparison data at this power level.

12KW Best for ≤16mm Carbon Steel

Thickness	O₂ Speed	Mixed Gas Speed	Speed Improvement
6mm	~2.5 m/min	~18 m/min	~7× faster
10mm	1.8–2.3 m/min	4.5–5 m/min	~2.5× faster
12mm	~1.8 m/min	~4 m/min	~2.2× faster
16mm	1.4–1.8 m/min	3–4 m/min	~2.2× faster

20KW Best for ≤25mm Carbon Steel

Thickness	O₂ Speed	Mixed Gas Speed	Speed Improvement
2mm	—	22 m/min	Use mixed gas (not N₂)
6mm	2.6–3.0 m/min	18 m/min	~6× faster
8mm	2.3–2.5 m/min	16 m/min	~7× faster
10mm	2.0–2.2 m/min	12–14 m/min	~6× faster
12mm	1.8–2.0 m/min	10–12 m/min	~6× faster
14mm	1.6–1.8 m/min	9.5 m/min	~5.5× faster
16mm	1.5–1.6 m/min	5–6 m/min	~3.5× faster
20mm	1.1–1.5 m/min	3–4 m/min	~2.5× faster
25mm	0.9–1.2 m/min	2.5–3 m/min	~2.5× faster

30KW Best for ≤30mm Carbon Steel

Thickness	Mixed Gas Speed	Test Location	Notes
8mm	16 m/min	Taiwan site	Extremely clean cut
10mm	~12 m/min	Field test	—
12mm	9.3 m/min	Taiwan site	No burrs confirmed
16mm	~8 m/min	Taiwan site	—
20mm	5.6 m/min	Taiwan site	PENTA end user
25mm	~3.5 m/min	Field test	—
30mm	Contact	—	Contact for detailed params

⚠️ Important Note on 40KW–60KW Data: The cutting speeds listed below for 40kW and 60kW lasers are reference estimates derived from power-scaling of verified 30kW field data, not independently confirmed on-site test results. Actual cutting speeds may vary significantly based on machine brand, beam quality, gas supply conditions, and material properties. Please contact us for confirmed parameters validated on your specific machine configuration.

40KW Best for ≤35mm Carbon Steel (Reference Estimates)

Thickness	Reference Speed*	Notes
20mm	~10 m/min	Power-scaled from 30kW
25mm	~6 m/min	Power-scaled from 30kW
30mm	~4 m/min	Extrapolated
35mm	~2.5 m/min	Extrapolated

*Reference estimates based on power-scaling from verified 30kW field data (PENTA end user, Taiwan site). Not yet independently confirmed on a 40kW machine. Contact us for confirmed parameters.

60KW Best for ≤45mm Carbon Steel (Reference Estimates)

Thickness	Reference Speed*	Notes
25mm	~10 m/min	Power-scaled from 30kW
30mm	~7 m/min	Power-scaled from 30kW
40mm	~3.5 m/min	Extrapolated
45mm	~2 m/min	Extrapolated

*Reference estimates based on power-scaling from verified 30kW/40kW data. A 60kW deployment has been observed on-site, but systematic parameter testing has not been completed. Contact us for the latest test results and to discuss your specific 60kW application.

Gas Consumption

Why Mixed Gas Wins on Economy

Gas Pressure & Flow Specifications

Parameter	Value	Notes
Input Pressure (N₂ & O₂)	20–25 bar	From liquid storage tanks
Output Pressure	12–16 bar	To laser cutting machine
Max Flow Rate	200 m³/h	At full load
Output N₂ Purity	~95%	Micro-oxygen mixed gas
Gas Ratio	N₂ 95% / O₂ 5%	Adjustable for different materials
Power Consumption	2 kWh / 24 hours	Extremely energy efficient

Need detailed parameters for your specific laser machine and use case? Contact us for a customized parameter table.

Get Your Custom Parameters →

LEARN MORE

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Technical Data

Cutting Parameters Guide: Optimize Speed and Quality for Every Thickness

Complete parameter reference for 3kW–60kW laser machines. Cutting speeds, gas ratios, and nozzle selection.

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Buying Guide

Complete Guide to Laser Cutting Assist Gases

When to use O₂, N₂, air, or mixed gas. Material-specific recommendations for every scenario.

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Comparison

N₂/O₂ Mixed Gas vs Pure Nitrogen

Speed, quality, and cost data: why mixed gas outperforms pure N₂ on carbon steel.

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