EOS StainlessSteel 316L

Material Data Sheet

EOS StainlessSteel 316L is a high performance marine-grade austenitic stainless steel that is molybdenum alloyed for enhanced corrosion resistance in chloride environments. 316L is a standard material for numerous applications in process, energy, paper, transportation and other industries. EOS StainlessSteel 316L is a stainless steel powder intended for manufacturing parts on EOS metal systems with EOS DMLS processes.

MAIN CHARACTERISTICS

High ductility and toughness
High strength
High corrosion resistance

TYPICAL APPLICATIONS

Chemical industry
Food processing
Medical devices

The EOS Quality Triangle

EOS uses an approach that is unique in the AM industry, taking each of the three central technical elements of the production process into account: the system, the material and the process. The data resulting from each combination is assigned a Technology Readiness Level (TRL) which makes the expected performance and production capability of the solution transparent.

EOS incorporates these TRLs into the following two categories:

Premium products (TRL 7-9): offer highly validated data, proven capability and reproducible part properties.
Core products (TRL 3 and 5): enable early customer access to newest technology still under development and are therefore less mature with less data.

All of the data stated in this material data sheet is produced according to EOS Quality Management System and international standards

POWDER PROPERTIES

The chemical composition of EOS StainlessSteel 316L corresponds to ASTM F138 material standard for Surgical Implants (UNS S31673).

Powder Chemical Composition (wt.-%)

Element	Min.	Max.
Fe	-	-
Cr	17	19
Ni	13	15
Mo	2.25	3
C	-	0.03
N	-	0.1

Powder Particle Size

GENERIC PARTICLE SIZE DISTRIBUTION	20 - 65 μm

SEM micrograph of EOS StainlessSteel 316L powder

HEAT TREATMENT

Description

Heat treatment according to AMS 2759 is optional.

Steps

Stress relief: Hold temperature 900 °C, hold time minimum 2 h when thoroughly heated, water quenching

Solution annealing: Hold temperature 1 150 °C, hold time minimum 1.5 h when thoroughly heated, water quenching

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