EOS StainlessSteel PH1

Material Data Sheet

EOS StainlessSteel PH1 is a pre-alloyed stainless steel in fine powder form. The chemistry of EOS StainlessSteel PH1 conforms to the compositions of DIN 1.4540 and UNS S15500. This kind of steel is characterized by having good corrosion resistance and excellent mechanical properties, especially in the precipitation hardened state. This type of steel is widely used in variety of engineering applications requiring high hardness, strength and corrosion resistance. This material is ideal for many part-building applications (DirectPart) such as functional metal prototypes, small series products, individualised products or spare parts. Standard processing parameters use full melting of the entire geometry with 20 µm layer thickness. Using standard parameters the mechanical properties are fairly uniform in all directions. Parts made from EOS StainlessSteel PH1 can be machined, spark-eroded, welded, micro shot-peened, polished and coated if required.

MAIN CHARACTERISTICS

High strength and hardness
Corrosion resistant
For mildly corrosive environments

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TYPICAL APPLICATIONS

Engineering applications including functional prototypes, small series products, individualised products or spare parts
Parts requiring high corrosion resistance, sterilisability, etc.
Parts requiring particularly high hardness and strength

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 chemistry of EOS StainlessSteel PH1 conforms to the compositions of DIN 1.4540 and UNS S15500.

Powder Chemical Composition (wt.-%)

Element	Min.	Max.
Cr	14	15.5
Ni	3.5	5.5
Cu	2.5	4.5
Mn	-	1
Si	-	1
C	-	0.07
Mo	-	0.5
Nb	0.15	0.45

Powder Particle Size

GENERIC PARTICLE SIZE DISTRIBUTION	20 - 65 μm

HEAT TREATMENT

Description

Hardening of EOS StainlessSteel PH1 done using modified H900 heat treatment

Steps

Soaking time at precipitation hardening temperature 525°C elongated for 4 hours

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