EOS ToolSteel H13

Material Data Sheet

EOS ToolSteel H13

High strength tool steel for hot and cold work tooling applications

EOS ToolSteel H13 is a versatile high strength tool steel for hot and cold work tooling applications. The high toughness and excellent thermal properties of H13 make it one of the most used material in hot work tooling. EOS ToolSteel H13 provides excellent properties to successfully bring AM into use for die casting production.

MAIN CHARACTERISTICS

Chemical composition is similar to ASTM A681-08
Excellent toughness and ductility
Good high temperature strength
High hot wear resistance

TYPICAL APPLICATIONS

Die cast tooling
Forging
Hot extrusion tools

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

EOS ToolSteel H13 powder chemistry is according to ASTM A681-08.

Powder Chemical Composition (wt.-%)

Element	Min.	Max.
Fe	Balance
Cr	4.75	5.5
Mo	1.1	1.75
Si	0.8	1.25
V	0.8	1.2
Mn	0.2	0.6
C	0.32	0.45

Powder Particle Size

GENERIC PARTICLE SIZE DISTRIBUTION	15 - 63 μm

HEAT TREATMENT

Description

EOS ToolSteel H13 can be heat treated to various hardness levels to match the needs of different applications. Heat treatment consists of three stages. First stage is a soft annealing process to relieve stresses form the built part. This treatment is to performed for parts on the building platform. After soft annealing parts can be removed from the building platform and needed post processing and hardening heat treatment can be applied.

Steps

1. Soft annealing
Heating with moderate heating rate and then hold 30 min at 850 °C (±10 °C) when parts have thoroughly heated through. Next cool slowly to 650 °C with a cooling rate of 10 °C/ hour. After reaching 650 °C cooling in air or with low pressure gas cooling.

2. Hardening
Heating with moderate heating rate and then hold 30 min at 1 045 °C (±10 °C) when parts have thoroughly heated through. Quench the parts with high speed gas cooling or warm oil. Optimally continue directly to tempering when reaching 50-70 °C.

3. Tempering
2 times 2 h at 580-650 °C depending on the desired hardness level.
Hold for 2 h at desired temperature when parts have thoroughly heated through. Cool to room temperature between temperings.

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