X90

Alloy: Fe / C / Mn / Cr / Mo / Ni
Wire feedstock: Union X90
Summary

X90 is a low alloyed high strength steel suitable for lightweight applications. It is characterized by a higher strength compared to other classes of structural steel and better corrosion resistance. This material is suitable for offshore applications, oil & gas and lifting equipments.

Mechanical properties

The mentioned mechanical properties can vary according to design changes, process parameters optimization and strategy selection.

WAAM (z- dir.)
WAAM (z- dir.)
Hot rolled X90
Straight lines
Oscillation
YSt * (MPa)
820
786
680
USt ** (MPa)
944
937
730
El ***
19%
23%
18%
No additional heat treatment was applied after production.
* Yield Strength
** Ultimate Strength
*** Elongation
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General remarks
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General explanation
Printing strategies
Straight lines strategy: several welding beads overlapped next to each other
Oscillation: continuous zig-zag bead that fills the entire layer

Heat treatement
Stress relief: due to the high residual stresses build up in the WAAM product, this heat treatment is necessary to minize residual stresses.

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