Direct Metal Laser Sintering (DMLS)
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What Is Direct Metal Laser Sintering?

a stainless steel jet engine turbine 3d printed using the direct metal laser sintering 3d printing processDirect Metal Laser Sintering (DMLS) is a direct metal laser melting (DMLM) or laser powder bed fusion (LPBF) technology that accurately forms complex geometries not possible with other metal manufacturing methods.

DMLS Part Strength

DMLS parts are stronger and denser than investment casted metal parts, and they can help you get to market first with faster turnaround times.

Metal 3D printing is an ideal process for complex oil and gas components, custom medical guides, part-consolidated aerospace parts and tough functional prototypes.

Streamlined Metal Parts with DMLS

Utilize the design freedom of DMLS and produce accurate metal components in less time than other manufacturing methods.

How Does Direct Metal Laser Sintering Work?

DMLS uses a precise, high-wattage laser to micro-weld powdered metals and alloys to form fully functional metal components from your CAD model.

DMLS parts are made with powdered materials like aluminum, stainless steel and titanium, as well as niche alloys like MONEL® K500 and Nickel Alloy 718.

Finishing DMLS Parts

Raw DMLS parts have a surface finish comparable to a fine investment casting part, and expert finishing services are sometimes needed.

Stratasys Direct offers a full suite of professional finishing operations, including precision machining, media blasting, surface grinders and milling.

Direct Metal Laser Sintering Quality Controls

To maintain critical quality control standards, we use a range of tools to inspect and ensure customer specifications. With international certification standards ISO 9001 and AS9100, we have stringent systems in place to guarantee quality and consistently are met.

We utilize tools like coordinate measuring machines, probes, cutup metallography processes and flow benches, hydrostatic pressure testing machines to guarantee quality is consistently met. DMLS materials build fully dense, corrosive resistant and highly robust metal parts that can be further treated through heat, coating and sterilization.

DMLM Products


  • The fastest way to manufacture with DMLM technology
  • Produce geometries with high-strength metal alloys in one fluid build
  • Hand-finishing with media blast
  • Manufacture in Stainless Steel 316L or 17-4, Aluminum (AlSi10Mg), Cobalt Chrome, Nickel Alloy 625, and Titanium (Ti64)

A.M.P. Specification

  • No spec? No problem! Our Additive Metal Process Spec provides production metal parts with DMLM technology

Customer Specification

  • Adhering to customer-provided statement of work and process, material, and/or machine specifications. The ultimate level of control for your project and product

DMLM Discover

We’re ready to take on any challenge and push the boundaries of what’s possible with DMLM Discover – our custom solution for new and novel additive alloys and designs.

  • Access materials in the early stages of development for DMLM
  • Test custom manufacturing parameters for your project

Materials for 3D Printing Parts with DMLS

Metal materials like you’ve never seen them before. Produce complex geometries in one fluid build that would be impossible to compose with traditional manufacturing processes. Additive metals deliver dense, corrosive resistant and high strength parts which can be further treated through heat, coating and sterilization.


Description Benefits Applications Properties

Stainless Steel 17-4 PH (As Built)

Martensitic, chromium-nickel-copper precipitation-hardening stainless steel
  • Pre-alloyed, precipitation hardenable stainless steel
  • Good welding and machining characteristics
  • Good mechanical properties
  • Excellent weld-ability & corrosion resistance
  • Cost effective
  • Parts requiring post-production processing
  • Oil and gas industry
  • Parts requiring ductility and high strength
  • Parts requiring high corrosion resistance

Stainless Steel 316L (As Built)

Austenitic stainless steel
  • Good strength and creep resistance
  • Excellent weldability due to low-carbon
  • Molybdenum gives improved corrosion resistance
  • Excellent weld-ability, corrosion resistance & ductility
  • Parts requiring post-production processing
  • Consumer, automotive & aerospace
  • Parts requiring ductility and high strength
  • Parts requiring high corrosion resistance

Aluminum AlSi10Mg (As Built)

Casting grade alloy
  • Low weight
  • Good thermal properties, strength and hardness
  • Fast building
  • Excellent machinability
  • Thin walls
  • Complex geometries
  • Lower cost prototypes
  • Aerospace and automotive

Nickel Alloy 625 (As Built)

Nickel based superalloy
  • Corrosion resistant
  • Non-Magnetic
  • High tensile, creep and rupture strengths
  • High heat applications
  • Turbine engine components and fuel systems
  • Oil well, petroleum, and natural gas industry

Nickel Alloy 718 (As Built)

High strength nickel base superalloy
  • Fatigue resistance
  • Non-Magnetic
  • Corrosion resistant
  • Good tensile, creep & rupture strength
  • High heat applications
  • Turbine engine components, fasteners & instrumentation parts
  • Oil well, petroleum, and natural gas industry

Nickel Alloy K500 (As Built)

Age-hardenable Nickel-Copper alloy
  • Liquid Oxygen (LOX) Compatible
  • Corrosion resistant
  • Ti, Al precipitates create high strength
  • Liquid Rocket Engine Components
  • LOX Manifolds and Injectors
  • Parts requiring ductility and high strength
  • Parts requiring high corrosion resistance

Titanium Ti64 (As Built)

Alpha-beta titanium alloy
  • Excellent mechanical properties
  • Corrosion resistance combined with low specific weight
  • Biocompatible
  • Motorsports and racing applications
  • Structural and engine components for aerospace
  • Biomedical implants

Cobalt Chrome CoCrMo (As Built)

Metal alloy of cobalt and chromium
  • Great mechanical properties with excellent tribology
  • Resistant to corrosion, wear and heat
  • Dental restorations (crowns, bridges etc.) bearing assembly, ballast, casting, step soldering, and radiation shielding

Get a Quote

Ready to make your part with DMLS? Upload your CAD file now to select your material and generate an instant quote.

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Get Design Services

Need some assistance with your 3D design? Our design services team offers a suite of solutions, including file creation and file repair.

Get Design Services

Use Material Wizard

Want to compare DMLS material properties? Use our material wizard to find out which materials meet your part's requirements.

Use Material Wizard

Metal 3D Printing Applications of DMLS

direct metal laser sintering production parts

Production Parts

Produce low-volume production metals parts with DMLS.

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direct metal laser sintering functional prototyping

Functional Prototyping

Build tough and hardworking metal prototypes to test components in real-world applications.

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direct metal laser sintering thermal control systems

Thermal Control Systems

Advance your thermal management capabilities with complex heat exchangers and heat pipes manufactured with DMLS.

DMLS Parts from 3D Printing Pioneers

a quality engineer inspects a metal part 3d printed with dmls technologyMaking a quality 3D printed part takes more than just a machine. It takes a responsive team behind the technology, running tests and working tirelessly to validate materials and processes.

At Stratasys Direct, our services are backed by more than the largest fleet of machines in North America; we have nearly thirty years in the industry and a team of engineers ready to assist with every step of your project.

DMLS Expertise You Can Trust

Years of experience with DMLS has led us to develop proprietary build styles, post-processing methods, and even led us into material development exploration.

Whatever your project need, we won’t rest until your requirements are met.

Not sure where to start? Our experts are here to help.

Contact an Engineer

Direct Metal Laser Sintering Resources

getting the most out of metal 3d printing

DMLS Design Guidelines

Best practices and tips on optimizing designs for DMLS

Best practices and tips on optimizing designs for DMLS

advancing thermal management with 3d printing

Advancing Thermal Management with 3D Printing

Discover the unique performance capabilities for thermal control enabled by DMLS.

Discover the unique performance capabilities for thermal control enabled by DMLS.

Read the White Paper
getting the most out of metal 3d printing

Getting the Most Out of Metal 3D Printing

Learn how to overcome conventional manufacturing challenges & deliver incredible metal parts with metal 3D printing.

Read the White Paper

Frequently Asked Questions About DMLS

a copper part 3d printed with dmls 3d printing technologyAre DMLS parts as strong as traditionally manufactured metal components?

Yes. The parts created with DMLS have mechanical properties equivalent to a cast metal part. Detailed information can be found on the DMLS materials page.

What is the porosity of DMLS parts?

DMLS parts can reach a 99.5% density. In fact, 3D printed metals are above industry standards for density testing.

What level of detail can be obtained with DMLS?

DMLS is available in several resolutions. At its highest resolution, the layer thickness is 0.0008” – 0.0015” Z and the X/Y resolution is 0.012” – 0.016”.

The minimum hole diameter is 0.035” – 0.045”. Read the DMLS design guidelines to learn more.

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