DMLS TechnologyMetal

Stainless Steel 316LMarine-Grade Austenitic Stainless Steel

Stainless Steel 316L is a high-performance marine-grade austenitic stainless steel with enhanced molybdenum content for superior corrosion resistance. Offering exceptional ductility, toughness, and strength, it delivers reliable performance in demanding chemical, medical, and industrial environments where corrosion resistance is critical.

Tensile Strength
N/A
Flexural Modulus
N/A
Temperature Resistance
870 °C
Technology
DMLS
Stainless Steel 316L 3D printed part example
Metal Precision
Industrial Grade
DMLS material

Stainless Steel 316L overview

Stainless Steel 316L is a marine-grade austenitic stainless steel specifically optimized for DMLS additive manufacturing. With enhanced molybdenum content (2.25-3.0%), it provides superior corrosion resistance in chloride environments compared to standard 304 stainless steel. The material exhibits excellent ductility, toughness, and strength while maintaining biocompatibility for medical applications. Its chemical composition complies with ASTM F138 standards for surgical implants, making it ideal for both industrial and medical applications.

Why manufacture with Stainless Steel 316L

Stainless Steel 316L combines superior corrosion resistance in marine and chemical environments and superior mechanical properties and dimensional accuracy, delivering high ductility and toughness for complex geometries for demanding applications. From rapid prototyping to production runs, teams rely on Stainless Steel 316L to maintain tight tolerances while reducing assembly complexity through consolidated part designs.

DMLS Production Technology

EOS metal systems define the industry benchmark for direct metal laser sintering, incorporating precision optics with f-theta lenses that maintain consistent beam quality across the entire build platform. Their closed-loop powder handling and inert atmosphere control achieve oxygen levels below 0.1%, critical for reactive materials like titanium and aluminum alloys. The EOSTATE monitoring suite provides real-time melt pool analysis and automatic exposure parameter correction, ensuring aerospace-grade quality with full documentation for every layer of every part.

Build Volume

400 × 400 × 400 mm

Max part size

Lead Time

8-12 business days

Standard production

Layer Height

20-80 μm

Resolution

Upload your CAD files to our Steam platform for instant DFM analysis and pricing. Get manufacturing validation, cost breakdowns, and production timelines in seconds.

Manufactured in Forge Labs' North American production centers with serialized traceability for Stainless Steel 316L.

Stainless Steel 316L DMLS cube sample showing direct metal laser sintered surface finish
Technical resources

Jump to data & downloads

Navigate directly to the property tables and grab the latest datasheet for your build review.

Technical datasheet

Detailed specs for Stainless Steel 316L.

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Applications & field work

Where Stainless Steel 316L excels

Stainless Steel 316L through EOS DMLS produces fully dense, corrosion-resistant parts for medical, marine, and chemical processing applications. The low carbon content prevents carbide precipitation, maintaining corrosion resistance in welded or as-built conditions.

DMLS 316L achieves superior mechanical properties versus cast material, with fine austenitic microstructure providing excellent ductility. Parts can be electropolished to Ra <0.4 μm for medical and pharmaceutical applications requiring cleanability.

Forge Labs' validated parameters ensure <0.5% porosity with excellent surface quality for functional parts. Our passivation and electropolishing services deliver mirror finishes for FDA-compliant components.

High-precision stainless steel component
Forge Labs Steam Platform

Manufacturing intelligence for Stainless Steel 316L

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Industry applications for Stainless Steel 316L

From surgical instruments to chemical processing equipment, DMLS 316L enables complex stainless steel components. Explore how industries leverage this versatile material.

DMLS 316L enables complex surgical instruments with integrated features and ergonomic designs. The material's biocompatibility and sterilization resistance ensure patient safety.

Key Applications

  • Laparoscopic surgical instruments
  • Orthopedic surgical guides
  • Dental instruments and tools
  • Custom surgical retractors

Performance Data

Achieves Ra <0.4 μm with electropolishing, meeting FDA cleanability requirements while maintaining ASTM F138 compliance.

Explore surgical & medical instruments

Chemical plants use DMLS 316L for corrosion-resistant components with complex internal passages. The technology enables reactive flow components with optimized mixing.

Key Applications

  • Static mixers with helical elements
  • Reactor components and nozzles
  • Complex valve bodies
  • Pharmaceutical processing equipment

Performance Data

Corrosion rate <0.025 mm/year in 10% HCl at 50°C with pitting resistance equivalent PREN >24 for aggressive environments.

Marine applications leverage 316L's superior corrosion resistance for custom hardware and subsea equipment. DMLS enables weight-optimized designs for underwater deployment.

Key Applications

  • Custom marine hardware and fittings
  • Subsea connector components
  • Propeller and thruster parts
  • Desalination system components

Performance Data

Maintains mechanical properties after 5000 hours salt spray testing with <0.1mm pitting depth in seawater service.

Food manufacturers use DMLS 316L for hygienic equipment with complex cleaning channels. The material meets food contact regulations with excellent cleanability.

Key Applications

  • Spray nozzles and dispensers
  • Valve components for dairy processing
  • Brewery fittings and tap components
  • Confectionery molding inserts

Performance Data

Meets FDA CFR 21 and EU 1935/2004 food contact requirements with CIP/SIP compatibility at 140°C.

Stainless Steel 316L production examples

High-precision stainless steel component

High-precision stainless steel component

Corrosion-Resistant Component

Marine-grade stainless steel 316L components

Marine-grade stainless steel 316L components

Marine Applications

DMLS production capabilities

DMLS production capabilities

Manufacturing Solutions

Performance Dashboard

Technical performance for Stainless Steel 316L

Stainless Steel 316L delivers dependable strength and impact resistance for High-precision mechanical components and assemblies and Chemical processing equipment and valves, helping teams move from prototype to production with confidence.

Mechanical Properties

Tensile Strength (Horizontal)

640 MPa

Stainless Steel 316L records Tensile Strength (Horizontal) at 640 MPa, reinforcing its mechanical properties story.

Mechanical Properties

Tensile Strength (Vertical)

540 MPa

Stainless Steel 316L records Tensile Strength (Vertical) at 540 MPa, reinforcing its mechanical properties story.

Mechanical Properties

Yield Strength (Horizontal)

530 MPa

Stainless Steel 316L records Yield Strength (Horizontal) at 530 MPa, reinforcing its mechanical properties story.

Stainless Steel 316L combines Superior corrosion resistance in marine and chemical environments and Superior mechanical properties and dimensional accuracy to support High-precision mechanical components and assemblies and Chemical processing equipment and valves that demand production-ready durability.

Measurement
Stainless Steel 316LBase
Standard
Tensile Strength (Horizontal)640 MPa
Tensile Strength (Vertical)540 MPa
Yield Strength (Horizontal)530 MPa
Yield Strength (Vertical)470 MPa
Flexural Strength750 MPa
Elongation (Horizontal)40 %
Elongation (Vertical)54 %
Young's Modulus (Horizontal)185 GPa
Young's Modulus (Vertical)180 GPa
Hardness89 HRB
Mechanical Performance

Mechanical Properties

Stainless Steel 316L delivers dependable strength and impact resistance for High-precision mechanical components and assemblies and Chemical processing equipment and valves, helping teams move from prototype to production with confidence.

Stainless Steel 316L delivers exceptional mechanical performance with excellent strength characteristics, effectively handling demanding load conditions. Its balanced mechanical profile allows it to maintain structural integrity while preventing brittleness in critical applications.

These qualities make it well-suited for High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components, providing long-term durability in demanding environments. Stainless Steel 316L maintains dimensional stability over time, ensuring consistent performance across temperature and stress variations.

This makes it a reliable choice for applications requiring precise geometries and tight tolerances across Chemical Processing, Food & Beverage, and Marine. Its versatility and durability allow it to perform consistently across a wide range of mechanical applications, ensuring parts maintain their integrity under repetitive stress and environmental conditions.

Stainless Steel 316L combines Superior corrosion resistance in marine and chemical environments and Superior mechanical properties and dimensional accuracy to support High-precision mechanical components and assemblies and Chemical processing equipment and valves that demand production-ready durability.

Key metric

Tensile Strength (Horizontal)

640 MPa

Key metric

Tensile Strength (Vertical)

540 MPa

Key metric

Yield Strength (Horizontal)

530 MPa

Dive into the data

Detailed mechanical measurements live in the performance dashboard above. Switch tabs to compare against other materials instantly.

Material Makeup

Physical Properties

Stainless Steel 316L offers consistent density and surface quality so critical features hold tolerances and downstream finishing remains predictable.

Stainless Steel 316L exhibits a density of 7.9 g/cm³ that contributes to lightweight yet durable parts. Its low moisture absorption ensures dimensional stability in varying environmental conditions.

These physical properties enable consistent part quality and predictable performance across High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components. The material's inherent characteristics minimize warpage and maintain tight tolerances throughout the part lifecycle.

For Chemical Processing, Food & Beverage, and Marine, these physical attributes translate to reliable production outcomes with minimal post-processing requirements, ensuring parts meet specifications straight from the build platform.

Stainless Steel 316L delivers 7.9 g/cm³ density so assemblies fit and finish without secondary rework.

Key metric

Density

7.9 g/cm³

Key metric

Relative Density

100 %

Key metric

Average Defect Percentage

0.018 %

Dive into the data

Detailed physical properties measurements live in the performance dashboard above. Switch tabs to compare against other materials instantly.

Heat Performance

Thermal Properties

Stainless Steel 316L maintains dimensional stability through temperature swings, making it a reliable option for Chemical Processing and Food & Beverage programs that see repeated thermal cycling.

Stainless Steel 316L demonstrates excellent thermal stability with robust heat resistance, enabling it to maintain dimensional accuracy in elevated temperature environments. This thermal performance ensures parts retain their shape and mechanical properties even under thermal stress.

The material's thermal characteristics make it ideal for High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components that experience temperature fluctuations. Its ability to withstand thermal cycling without degradation ensures long-term reliability in Chemical Processing, Food & Beverage, and Marine.

With an operating temperature range up to 870 °C, Stainless Steel 316L provides engineers with confidence when designing parts for thermally demanding applications, from under-hood automotive components to industrial equipment exposed to heat sources.

Stainless Steel 316L maintains geometry with a Service Temperature of 870 °C, protecting dimensional integrity during heat cycling.

Key metric

Melting Range

1375-1400 °C

Tested to DIN EN ISO 3451

Key metric

Service Temperature

870 °C

Key metric

Thermal Conductivity at 20°C

16.3 W/m·K

Tested to EN ISO 22007

Dive into the data

Detailed thermal properties measurements live in the performance dashboard above. Switch tabs to compare against other materials instantly.

Compatibility Data

Chemical Properties

Stainless Steel 316L offers tested chemical resistance across acids, bases, solvents, and hydrocarbons to ensure reliable performance in harsh environments.

Stainless Steel 316L demonstrates broad chemical resistance with testing against 10 different chemicals, showing excellent compatibility with 6 substances and good compatibility with 3 others. This extensive chemical resistance profile makes it suitable for harsh industrial environments.

The material's resistance to acids, bases, solvents, and hydrocarbons enables its use in High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components that require exposure to aggressive chemicals. Its chemical inertness ensures parts maintain their mechanical properties even after prolonged chemical exposure.

For Chemical Processing, Food & Beverage, and Marine, this chemical stability translates to longer service life and reduced maintenance requirements, making Stainless Steel 316L a cost-effective choice for chemically demanding applications.

Stainless Steel 316L has been tested against 10 chemicals with 6 showing excellent compatibility for demanding chemical environments.

Key metric

Seawater

Excellent

Type: Salt Solution

Key metric

Chloride Solutions

Excellent

Type: Salt Solution

Key metric

Organic Solvents

Excellent

Type: Solvent

Dive into the data

Detailed chemical properties measurements live in the performance dashboard above. Switch tabs to compare against other materials instantly.

Chemical Resistance

Chemical compatibility for Stainless Steel 316L

Evaluate how Stainless Steel 316L responds to common chemicals before you commit to production tooling. Filter the grid to focus on acids, bases, solvents, or hydrocarbons.

10 of 10 chemicals shown

ChemicalTypeCompatibility
SeawaterSalt SolutionExcellent
Chloride SolutionsSalt SolutionExcellent
Weak AcidsAcidGood to Excellent
Alkaline SolutionsBaseGood
Organic SolventsSolventExcellent
Food ProductsAcidExcellent
Pharmaceutical SolutionsSolventExcellent
Strong Acids (HCl, H2SO4)AcidModerate
Atmospheric CorrosionOxidizerExcellent
Industrial ChemicalsSolventGood to Excellent
Resources

Datasheets and design resources

Equip your team with certification packs, design guides, and spec sheets tailored to Stainless Steel 316L.

Download center

Access the most recent datasheet and supporting documentation maintained by our engineering team.

Design guidelines

Explore printable geometry recommendations, wall thickness tips, and finishing playbooks for DMLS.

View DMLS design guide

Compliance certificates

Keep your quality packet current with pre-approved certifications.

ASTM A240Certified
UNS S31673Certified
EN 1.4441Certified

Advanced Manufacturing

Built with Precision DMLS Technology

Stainless Steel 316L is manufactured using Direct Metal Laser Sintering (DMLS) technology, providing unmatched strength and precision for mission-critical applications.

DMLS Manufacturing Lab

Stainless Steel 316L is printed on EOS M-series production systems with real-time melt pool monitoring, guaranteeing aerospace-grade density and fatigue performance for tooling and end-use components.

Process Parameters

Layer Height
20-80 μm
Tolerance
± 20-50 μm (small parts), ± 0.2% (large parts)
  • Build Volume: 400 × 400 × 400 mm. Large production capacity enables efficient manufacturing of multiple parts or assemblies.
  • Quality Control. In-process monitoring and batch traceability ensure consistent part quality and material properties.

Finishing Options

Support removalStress relief (optional)Solution annealing (optional)Shot peeningPolishingMachining
Frequently Asked Questions

Frequently asked questions about Stainless Steel 316L

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Stainless Steel 316L is known for its superior corrosion resistance in marine and chemical environments, superior mechanical properties and dimensional accuracy, high ductility and toughness for complex geometries, making it suitable for chemical processing and food & beverage applications.

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