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Published on August 22nd, 2016 | by Raja Sekhar Upputuri

EOS Stainless Steel 316L

EOS Stainless Steel 316L is a corrosion resistant iron based alloy.

This kind of stainless steel is characterized having a good corrosion resistance and evidence that there are no leachable substances in cytotoxic concentrations.


Material Composition

Fe (balance) &nbsp&nbsp&nbsp Cr (17.00 -19.00 wt %-)
Ni (13.00-15.00 wt %-) &nbsp&nbsp&nbsp Mo (2.25- 3.00 wt %-)
C (<= 0.030wt %-) &nbsp&nbsp&nbsp Mn (<= 2.00wt %-)
Cu (<= 0.50 wt %-) &nbsp&nbsp&nbsp P (<=0.025 wt %-)
S (<=0.010 wt %-) &nbsp&nbsp&nbsp Si (<=0.75 wt %-)
N (<=0.10 wt %-)

Physical Properties

This material has excellent corrosion resistance, high ductility, post-processing possible.
ParameterAs Built (typical)
Tensile Strength
XY: 640 ± 50 MPa; Z: 540 ± 55 MPa
Yield Strength

XY: 530 ± 60 MPa; Z: 470 ± 90 MPa
Elongation at Break
XY: (40 ± 15) %; Z: (50 ± 20) %
Modulus of elasticity
XY: 185 GPa; Z: 180 GPa
Hardness89 HRB

Other Properties

Densitymin. 7.9 g/cm3

Relative DensityApprox. 100%

3D Printing Details

Technology

DMLS
Possible Post Processing
Machined, shot-peened and polished in as-built or stress relieved if required. Parts are not ideal in temperature range 427°C - 816°C where precipitation of chromium carbides occurs
Accuracy
20-50 Microns(for small parts)

Min Wall Thickness
0.3-0.4 mm
Min Layer Resolution
20 Microns
Volume Rate 2 mm³/s

Surface Roughness

Ra: 13 ±5 Microns ; Rz: 80 ±20 Microns

Applications

This material is ideal for applications like
  1. Watch and jewellery making
  2. Automotive
  3. Aerospace
  4. Food and chemical plants

Design Guidelines

Min Wall Thickness0.3-0.4 mm
Min Layer Resolution20 Microns
Min Detail Size0.8 mm
Min Hole Diameter0.8 mm
Min Text Size 2.5 mm
Max Part Dimension300 mm

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