EOS StainlessSteel 316L DMSL on EOS M 100

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EOS StainlessSteel 316L DMSL on EOS M 100
Categories:	Metal; 3D Printing/Additive Manufacturing Metal; Ferrous Metal; Stainless Steel
Material Notes:	EOS StainlessSteel 316L is a corrosion resistant iron based alloy which has been optimized for processing on EOS DMLS systems. EOS StainlessSteel 316L have chemical composition corresponding to ASTM F138 “Standard Specification for Wrought 18Cr-14Ni-2.5Mo Stainless Steel Bar and Wire for Surgical Implants (UNS S31673). This kind of stainless steel is characterized having a good corrosion resistance and evidence that there are no leachable substances in cytotoxic concentrations. This material is ideal in: Lifestyle/Consumer, e.g. watches, other jewelry, spectacle frames, decorations Automotive/Industrial, e.g. non-corroding common material, food and chemical plants Aerospace/Turbine industry Entry-level material for Laser Sintering Technology, e.g. mounting parts, heat exchangers, functional elements in electronic housing and accessories Parts built from EOS StainlessSteel 316L can be machined, shot-peened and polished in as-built or stress relieved (AMS2759) states if required. Solution annealing is not necessary because the mechanical properties of as-built state are showing desired values (ASTM A403). Parts are not ideal in temperature range 427°C - 816°C where precipitation of chromium carbides occurs. Due to layer-wise building method, the parts have a certain anisotropy which could be seen from mechanical properties. Information provided by EOS GmbH (Electro Optical Systems).
Key Words:	UNS S31673
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Physical Properties	Original Value	Comments

Density	7.98 g/cc	ISO 3369
Particle Size	<= 63 µm	<1 wt% above 63µm; ASTM B214

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	590 MPa	Vertical; ISO 6892
	650 MPa	Horizontal; ISO 6892
Tensile Strength, Yield	490 MPa	Vertical; ISO 6892
	535 MPa	Horizontal; ISO 6892
Elongation at Break	35 %	Horizontal; ISO 6892
	45 %	Vertical; ISO 6892

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.030 %
Chromium, Cr	17 - 19 %
Copper, Cu	<= 0.50 %
Iron, Fe	59.585 - 67.75 %	Balance
Manganese, Mn	<= 2.0 %
Molybdenum, Mo	2.25 - 3.0 %
Nickel, Ni	13 - 15 %
Nitrogen, N	<= 0.10 %
Phosphorus, P	<= 0.025 %
Silicon, Si	<= 0.75 %
Sulfur, S	<= 0.010 %

Descriptive Properties
Surface roughness	<12 µm	Ra, after shot peening
	<62 µm	Rz, after shot peening
Volume rate	1,16 mm³/s

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NEOS939 / 280599

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