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316L Stainless Steel

316L stainless steel, also known as 1.4404, is a high performance marine-grade stainless steel. This austenitic stainless steel includes molybdenum for enhanced corrosion resistance in chloride environments. 316 L is excellent for applications where flexibility or malleability are needed.
3D Printing Process
  • Direct Metal Laser Sintering (DMLS)

Properties

  • Fine level of detail

  • High ductility and toughness

  • High strength

  • High corrosion resistance

Applications include

  • Watches, jewellery, functional components for electronic housings and accessories

  • Food and chemical facilities

  • Automotive industry for non-corrosive components

3D printed 316L metal parts - DMLS laser powder bed fusion, DMLS (courtesy of One Click Metal).png

About 316L Stainless Steel

316L/1.4404 stainless steel is one of the most frequently used corrosion-resistant stainless steels. Compared to other stainless steels, this material offers significantly improved corrosion resistance due to the addition of molybdenum. The lower carbon content gives good processing properties. 1.4404 has a wide range of applications in numerous industries such as automotive, construction, aerospace, mechanical engineering and pharmaceuticals.

Direct Metal Laser Sintering (DMLS) 3D Printing Process

Direct Metal Laser Sintering (DMLS) is a common additive manufacturing technique that is also referred to as Laser Powder Bed Fusion (L-PBF) or Select Laser Melting (SLM). This process builds metal parts by selectively fusing stainless steel powder in thin layers using a laser. This process is ideal for printing precise, high-resolution parts with complex geometries and a very fine level of detail. Parts that are printed using DMLS are stronger, denser, and can be more precise than casted metal parts.

Best for specialty production, including:​

  • complex metal parts with intricate details and delicate features

  • parts requiring a high level of precision and detail

  • parts designed for demanding environments

  • functional prototypes and end-use parts

  • low-mid volume production

DMLS metal 3D printed prototypes and production parts (courtesy of One Click Metal).png

Technical Specifications

Title
Specifications
Build envelope
150x150x150 mm
Layer thickness
20μm
Build Specifications
Title
Properties
Reduction of area Z [%]
62± 17%
Elongation at break A [%]
40 ± 10%
Tensile strength Rm [MPa]
620 ± 1%
Surface quality (z axis) (blasted)
Ra 3μm / Rz 20μm
Surface quality (z axis) (as built)
Ra 4μm / Rz 22μm
Average defect [%]
<0.5
Tensile strength
500-700 N/mm²
Mechanical Properties
Element
composition
Mn
<2.0
Si
<1.0
C
<0.03
Mo
2.0 - 3.0
Ni
11.0 - 14.0
Cr
16.0 - 18.0
Fe
Balance
Composition %

Design Guidelines​

Maximum part size

150 x 150 x 150 mm³ with a 20 mm radius

Minimum wall thickness
Minimum wall thickness.png

0.3 mm

Minimum embossed feature
Minimum embossed feature.png

X/Y       W 0.2 mm

             H 0.1 mm


Z           W 0.2 mm
           
 H 0.1 mm

Minimum hole size
Minimum hole size.png

0.5 mm vertical


0.8 mm horizontal

Holes
Picture5.png

The use of support structures for horizontal holes can be avoided by changing the circular hole shape to a teardrop shape, which uses a self-supporting angle. This eliminates the need for additional supports.

Minimum clearance
Minimum clearance.png

0.5 mm

Minimum part size
Minimum part size.png

0.3 x 0.3 x 0.mm³ (B x T x H)

Minimum pin diameter
Minimum pin diameter.png

0.5 mm

Minimum debossed feature
Minimum debossed feature.png

X/Y       W 0.3 mm

             H 0.1 mm


         W 0.3 mm
           
 H 0.2 mm

Minimum unsupported overhang angle
Minimum unsupported overhang angle.png

0 - 45°: Supports needed


> 45°: No supports needed

Printed threads
threads_edited.jpg

Printing holes and then tapping them is often recommended. The table below serves as a guide:

Thread size Method
< M3 Print holes, cut threads
≥ M3 Print threads, recut threads

Use Case Examples

3d printed 316L stainless steel Stool holder 4 (Courtesy of Desktop Metal).webp
Tool Holder
3D print 316L stainless steel (Courtesy of One Click Metal)_edited.jpg
Clipper Blade
va316L stainless steel 3D printing service (Courtesy of One Click Metal).webp
Mounting Bracket

Get your parts into production today

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