SLM Metal 3D Printing Service

SLM Metal 3D Printing Service

Production-Grade Selective Laser Melting for High-Performance Metal Parts

Looking for a reliable SLM metal 3D printing service to produce dense, strong, and complex metal components? Our Selective Laser Melting (SLM) capabilities support everything from rapid functional prototypes to low-volume production—ideal for aerospace, medical, automotive, and industrial applications.

We provide an end-to-end solution covering DfAM design support, SLM printing, heat treatment, CNC machining, surface finishing, and inspection—so you can move from CAD to parts faster with confidence.

What Is SLM (Selective Laser Melting)?

SLM (Selective Laser Melting) is a metal additive manufacturing process within Powder Bed Fusion (PBF). A high-power laser selectively melts metal powder to full density layer by layer, forming a near-net-shape part directly from a 3D CAD model.

Unlike partial sintering processes, SLM is designed to deliver high part density (typically ≥ 99.5%), strong mechanical performance, and the ability to create features that are difficult or impossible with traditional manufacturing.

How SLM Metal 3D Printing Works

The SLM workflow is a controlled, repeatable powder bed process:

1. Powder Recoating: A thin layer of metal powder is spread across the build plate

2. Laser Melting: A laser scans and fully melts powder according to the sliced CAD geometry

3. Solidification: The melt pool solidifies rapidly to form a dense metal layer

4. Layer-by-Layer Build: The platform lowers by one layer and the cycle repeats

5. Depowdering & Post-Processing: The part is removed, cleaned, and finished per requirements

This method enables internal channels, lattice structures, lightweighting, and part consolidation.

Key Technical Capabilities of SLM

Full Melting for High Density

SLM fully melts powder, resulting in near-wrought properties and excellent structural integrity.

Complex Geometry at Production Quality

SLM supports:

• Internal flow channels and manifolds

• Lattice and gyroid structures

• Topology-optimized lightweight parts

• Integrated assemblies to reduce welds/fasteners

Repeatability and Process Control

Prints are produced in an inert environment (argon or nitrogen), with process parameters optimized to balance strength, surface finish, and dimensional stability.

Typical SLM Process Parameters (Industry Range)

While each material and geometry requires optimization, typical ranges include:

• Layer thickness: ~20–60 μm

• Laser power: ~200–1000 W

• Build atmosphere: Argon or nitrogen (material dependent)

If you share your part requirements, we can recommend settings and post-process routes that match your performance targets.

Available Materials for SLM Metal Printing

We offer a broad selection of production metals for SLM:

Stainless Steel

• 316L: corrosion resistance, general industrial use

• 17-4PH: higher strength, heat-treatable

Aluminum

• AlSi10Mg: lightweight, good thermal conductivity, automotive & aerospace

Titanium

• Ti6Al4V (Grade 5 / medical-grade options): high strength-to-weight, corrosion resistance, implants & aerospace

Cobalt-Chromium

• CoCr: wear resistance, medical/dental applications

Tool & Maraging Steel

• Mold inserts and tooling with good hardness after aging

Nickel Superalloys

• Inconel 625 / 718: high temperature and corrosion resistance for aerospace/energy

Applications of SLM Metal 3D Printing

Aerospace

• Lightweight brackets and structural parts

• Topology-optimized components

• High-temperature parts (Inconel)

Medical & Dental

• Patient-specific implants

• Dental frameworks and restorations

• Porous structures for osseointegration

Automotive & Motorsport

• Heat exchangers and cooling channels

• Engine-related components

• Rapid iteration and low-volume production

Industrial Manufacturing & Tooling

• Conformal cooling mold inserts

• Custom jigs, fixtures, and end-of-arm tooling

• Spare parts and part consolidation

Advantages of SLM Metal 3D Printing

• High strength & density      suitable for functional parts

• Design freedom for complex internal      structures

• Part consolidation to reduce      assembly steps and failure points

• Faster development cycles than      conventional tooling routes

• Customization at scale (serial      customization)

• Material efficiency with recyclable      powder (process dependent)

Limitations of SLM (and How We Address Them)

Higher Cost Than Polymer Printing

SLM involves specialized equipment and powders. We help reduce cost through

DfAM optimization and smart build layout.

Post-Processing Is Often Required

Most SLM parts need:

• Support removal

• Stress relief / heat treatment

• Machining for critical interfaces

• Surface finishing as required

We offer post-processing as part of a complete manufacturing package.

Residual Stress & Distortion Risk

We use validated strategies (orientation, supports, heat treatment) to improve dimensional stability.

Design Guidelines for SLM (DfAM Best Practices)

If you’re preparing a part for metal 3D printing, these guidelines improve success rate and cost:

Wall Thickness & Feature Recommendations

• Avoid extremely thin unsupported walls

• Use fillets and smooth transitions to reduce stress      concentration

• Prefer self-supporting angles where possible to reduce supports

Support Strategy

Supports improve stability and heat dissipation but increase:

• Post-processing time

• Surface witness marks

We optimize supports for performance and clean removal.

Orientation Matters

Part orientation impacts:

• Surface finish

• Mechanical anisotropy

• Support volume

• Build time and cost

Share your functional requirements (load direction, sealing surfaces, mating faces), and we’ll orient and process accordingly.

Dimensional Accuracy, Tolerances & Surface Finish

SLM produces near-net-shape parts with good accuracy, but requirements vary by geometry and material.

Typical Outcomes (General Guidance)

• As-printed tolerances: suitable for many functional applications

• Precision fits / threads / sealing surfaces: often require CNC finishing

Surface Roughness

• As-printed surfaces typically require finishing when  aesthetics, friction, or sealing performance matters.

We offer finishing routes including:

• CNC machining

• Bead blasting

• Polishing

• Tumbling (application dependent)

Post-Processing Options (One-Stop Service)

Choose the finishing level that matches your application:

• Stress relief & heat treatment  (material dependent)

• Support removal & depowdering

• CNC machining for tight tolerance interfaces

• Surface finishing for functional or cosmetic needs

• Coatings (on request, depending on material and environment)

Quality Control & Inspection

We can support different inspection levels based on your industry needs:

• Dimensional inspection (CMM/measurement reports upon request)

• Visual inspection and surface review

• Material verification (where applicable)

• Batch traceability for production orders (on request)

If you require aerospace/medical documentation, let us know your compliance requirements and we’ll align the deliverables.

Our SLM Production Workflow

1. Upload CAD files (STEP preferred; STL acceptable)

2. Manufacturability review (DfAM) + orientation & support plan

3. Quotation & lead time confirmation

4. SLM printing in inert atmosphere

5. Post-processing (heat treat, machining, finishing)

6. Inspection & packaging

7. Delivery

What We Need for a Fast, Accurate Quote

To provide the best pricing and timeline, please include:

• Material selection

• Quantity

• Target tolerances (if any)

• Surface finish requirements

• Application context (load, temperature, corrosion, wear)

• Preferred file format (STEP/STL)

Get a Quote for SLM Metal 3D Printing