Stainless Steel 316L 3D printed part example
Metal Precision
Industrial Grade

Stainless Steel 316L(DMLS)Marine-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, marine, food processing, and industrial environments where corrosion resistance is critical.

Tensile Strength
640 MPa
Elastic Modulus
185 GPa
HDT
870 °C
Technology
DMLS
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DMLS material

Stainless Steel 316L overview

Stainless Steel 316L is the most popular 3D printed metal at Forge Labs for corrosion-resistant 3D printed parts. It combines high strength, excellent ductility, and strong chloride resistance, making it a go-to material for marine hardware, chemical processing equipment, food production components, and precision industrial assemblies.

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

Lead Time

8-12 business days

Layer Height

20-80 μm

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Applications & field work

Where Stainless Steel 316L excels

EOS Stainless Steel 316L is a production-grade DMLS stainless steel for corrosion-resistant 3D printed parts in marine, chemical processing, food production, and industrial equipment programs. From valves and manifolds to enclosures, brackets, and flow components, 316L supports complex geometries while maintaining cleanability and consistent field performance in harsh environments.

Design teams rely on 316L where chloride exposure, washdown cycles, and long service life matter, and the alloy’s ductility helps absorb impact and vibration without brittle failure. Common applications include chemical handling hardware, marine fittings, food processing equipment, pharmaceutical tooling, and precision industrial components that need durable stainless performance without tooling lead times. Forge Labs manufactures 316L on EOS metal systems with serialized lot and build traceability, giving teams a reliable path from prototyping to repeatable production and fast iteration across low- to mid-volume runs.

Mechanical

Tensile Strength (Horizontal): 640 MPa

EOS M 290, 40 µm parameter set at TRL 7
Thermal

Melting Range: 1375-1400 °C

Service to 870°C
Physical

Density: 7.9 g/cm³

Electrical

Electrical Conductivity: 1.35 MS/m

High-precision stainless steel component
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Industry applications for Stainless Steel 316L

From corrosion-critical hardware to regulated production parts, DMLS 316L enables complex stainless steel components with documented process controls. Explore where teams deploy this alloy.

EOS documentation for 316L-4441 provides a clear regulatory baseline for validation plans, including chemistry correspondence to ASTM F138 with process data for EOS M 290 production workflows.

Key Applications

  • Non-implant surgical tooling and handling fixtures
  • Validation and verification fixtures for regulated production
  • Cleanable process hardware for GMP environments
  • Pilot lots requiring serialized lot and build traceability

Performance Data

EOS M 290 40 µm parameter data is published at TRL 7 with average density >= 7.97 g/cm3 and average defect percentage of 0.015%, supporting repeatable qualification planning and faster production transfer.

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, with EOS StainlessSteel 316L-4441 data on EOS M 290 (40 µm) reporting chemistry corresponding to ASTM F138 (UNS S31673) and DIN EN 10088-3, TRL 7 process maturity, average density >= 7.97 g/cm3, and 0.015% average defect percentage backed by serialized lot and build traceability.

Mechanical Properties

Tensile Strength (Horizontal)

640 MPa

Tested to EN ISO 6892-1

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

Mechanical Properties

Tensile Strength (Vertical)

540 MPa

Tested to EN ISO 6892-1

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

Mechanical Properties

Yield Strength (Horizontal)

530 MPa

Tested to EN ISO 6892-1

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 MPaEN ISO 6892-1
Tensile Strength (Vertical)540 MPaEN ISO 6892-1
Yield Strength (Horizontal)530 MPaEN ISO 6892-1
Yield Strength (Vertical)470 MPaEN ISO 6892-1
Flexural Strength750 MPaEN ISO 6892-1
Elongation (Horizontal)40 %EN ISO 6892-1
Elongation (Vertical)54 %EN ISO 6892-1
Young's Modulus (Horizontal)185 GPaEN ISO 6892-1
Young's Modulus (Vertical)180 GPaEN ISO 6892-1
Hardness89 HRBEN ISO 6507-1
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, with EOS StainlessSteel 316L-4441 data on EOS M 290 (40 µm) reporting chemistry corresponding to ASTM F138 (UNS S31673) and DIN EN 10088-3, TRL 7 process maturity, average density >= 7.97 g/cm3, and 0.015% average defect percentage backed by serialized lot and build traceability.

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.

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.

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.

Functional Performance

Electrical Properties

Stainless Steel 316L includes measured electrical conductivity and resistivity data for grounded housings, shielding features, and electrically integrated metal components.

Stainless Steel 316L electrical properties support conductive housings, grounded fixtures, and functional prototypes that interact with electrical systems. Measured electrical conductivity of 1.35 MS/m and electrical resistivity of 7.40e-07 Ω·m gives engineers reliable inputs for current flow and grounding models.

These characteristics make it suitable for High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components where controlled conductivity, grounding continuity, and repeatable electrical response are required.

For Chemical Processing, Food & Beverage, and Marine, Stainless Steel 316L combines corrosion resistance with consistent electrical performance, helping teams validate designs faster from prototype to production.

Stainless Steel 316L provides measured 1.35 MS/m conductivity and 7.40e-07 Ω·m resistivity for grounded housings and electrically integrated metal components.

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 includes compatibility results for 10 chemical conditions, with 6 rated excellent and 3 rated good.

The profile supports use in High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components when fluid exposure stays within the rated compatible categories and concentrations.

The dataset spans acids, bases, solvents, and hydrocarbons so teams can map likely pass/fail behavior early for High-precision mechanical components and assemblies, Chemical processing equipment and valves, and Food processing machinery and components and avoid unsuitable fluid-contact conditions.

For Chemical Processing, Food & Beverage, and Marine, chemical ratings should be treated as screening guidance and confirmed with application-specific testing before production release.

Stainless Steel 316L has 10 documented chemical exposures with 9 rated good or excellent for fluid-contact design screening.

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.

Resources

Material DatasheetMechanical Properties Overview

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

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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
±0.3% (min ±0.3 mm)
  • 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
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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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