Technologies
This laser cutting stainless steel guide covers fiber laser cutting, a thermal separation process using a focused infrared beam to melt and eject material, delivering clean edges and tight tolerances
This laser cutting stainless steel guide covers fiber laser cutting, a thermal separation process using a focused infrared beam to melt and eject material, delivering clean edges and tight tolerances on grades like SS304 and SS316. Fiber lasers (1.064 µm wavelength) are absorbed efficiently by metal
This laser cutting stainless steel guide covers fiber laser cutting, a thermal separation process using a focused infrared beam to melt and eject material, delivering clean edges and tight tolerances on grades like SS304 and SS316. Fiber lasers (1.064 µm wavelength) are absorbed efficiently by metallic surfaces, enabling faster cutting speeds and superior edge quality across thicknesses from 0.5 mm to 16 mm compared to CO₂ laser cutting.
CAD file preparation: Submit your part geometry as DXF, DWG, or STEP format with cut lines on a single layer and no duplicate geometry.
Material and grade verification: Confirm stainless steel grade (SS304, SS316, SS430) and sheet thickness; thicker material (>12 mm) requires engineering review.
Assist gas selection: Nitrogen is applied to prevent oxidation and achieve bright cut edges; oxygen is used only for structural parts where edge discoloration is acceptable.
Laser parameter setup: Machine power (2–6 kW), cutting speed (300–6,000 mm/min), and focal position are programmed based on thickness and feature geometry.
Cutting cycle: The laser traverses the part outline while assist gas evacuates molten material from the kerf, leaving a perpendicular cut face.
Edge inspection and deburring: Parts are visually inspected for dross; post-process deburring is optional for food-grade or architectural finishes.
SS304 (18Cr-8Ni) and SS316/316L (18Cr-10Ni-2Mo) are the most common grades for laser cutting in Egypt and Saudi Arabia. SS304 is standard for industrial enclosures, food processing equipment, and general machinery housings. SS316L—with its molybdenum addition—is specified for petrochemical and pharmaceutical applications. SS430 (ferritic, 17Cr) cuts cleanly but is less corrosion-resistant and reserved for non-critical trim. All grades conform to EN 10088 standards. At Entag, we cut all three primary austenitic grades to ISO 2768-f (fine) tolerance on our fiber laser platform, serving engineers across the region.
| Thickness (mm) | Recommended Power | Edge Quality | Typical Tolerance |
|---|---|---|---|
| 1–3 mm | 1.5–2 kW | Excellent, bright edge | ±0.05 mm |
| 4–6 mm | 2–3 kW | Very good, minimal dross | ±0.1 mm |
| 8–16 mm | 3–6 kW | Good, post-process optional | ±0.15–0.2 mm |
Fiber laser cutting achieves positional tolerances of ±0.1 mm for thicknesses up to 6 mm, tightening to ±0.05 mm on precision profiles under 3 mm—conforming to ISO 2768-f. A 2 kW fiber laser cleanly cuts SS304 up to 6 mm with nitrogen assist; 4–6 kW machines extend capability to 12–16 mm. Standard cut-face roughness is Ra 3.2–6.3 µm; post-process deburring achieves Ra 1.6 µm for food-grade or visible architectural applications. Nitrogen assist gas prevents oxidation and discoloration—critical for 316L parts in petrochemical and pharmaceutical service. For thicknesses above 12 mm, engineering review confirms process fit or recommends waterjet or plasma alternatives.
Industrial equipment enclosures: Laser-cut mounting brackets and cabinet panels for factory automation.
Food processing machinery: SS304 hopper liners, sorting table frames, and hygienic component housings.
Petrochemical pipe flanges and fittings: SS316L flanges cut to exact bore profiles in fabrication yards.
Architectural cladding and trim: Decorative stainless fascia and trim panels for commercial buildings.
Medical device housings: Precision-cut enclosures for diagnostic and surgical equipment requiring 316L biocompatibility.
For additional metal processing options, explore CNC machining services in Egypt and sheet metal fabrication in Egypt.
What thickness of stainless steel can a fiber laser cut?
A fiber laser cuts stainless steel from 0.5 mm up to 16 mm depending on machine power and nitrogen assist gas purity. A 2 kW machine handles up to 6 mm with bright edge quality; 6 kW machines extend to 16 mm with minimal dross. Above 16 mm, plasma cutting or waterjet is typically more cost-effective for production runs.
What is the best gas to use when laser cutting stainless steel?
Nitrogen is the preferred assist gas because it prevents oxidation and leaves a bright, clean edge with no discoloration—essential for food-grade and corrosion-critical applications. Oxygen is faster and cheaper but produces an oxide layer on the cut face, suitable only for structural parts where appearance is non-critical.
What tolerances can I expect from laser-cut stainless steel parts?
Fiber laser cutting achieves ±0.1 mm positional tolerance for thicknesses up to 6 mm per ISO 2768-f standards. For thin-gauge sheet under 3 mm on precision profiles, ±0.05 mm is achievable when nitrogen assist and stable machine calibration are confirmed. Always verify tolerances with your fabricator based on sheet thickness and feature complexity.
Is laser cutting suitable for SS316L stainless steel?
Yes. SS316L is fully compatible with fiber laser cutting and is commonly used in food processing, pharmaceutical, and petrochemical applications where molybdenum corrosion resistance is required. Its low carbon content does not affect laser cuttability; nitrogen assist is strongly recommended to preserve edge corrosion resistance.
How do I prepare a CAD file for laser cutting stainless steel?
Submit your part as DXF or DWG (2D flat profile) or STEP/IGES for 3D-informed quoting. Ensure all cut lines are on a single layer, remove duplicate lines, and specify material grade, thickness, and quantity. Minimum internal radius should be at least 50% of material thickness to avoid thermal stress during cutting.
What is the surface finish on a laser-cut stainless steel edge?
A standard fiber laser-cut edge achieves Ra 3.2–6.3 µm on the cut face. Post-process deburring or edge polishing brings the cut face to Ra 1.6 µm or better for hygienic food-grade or visible architectural applications requiring smooth finish.
Ready to start your project? Request a quote on Entag — upload your CAD file (DXF, DWG, or STEP) and get a price in 24 hours. Entag serves engineers and procurement teams across Egypt and Saudi Arabia with on-demand fiber laser cutting, tube fabrication services, and precision manufacturing. No setup fees. No minimum order.
