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Material

S690

Alloy

Fe / C / Si / Mn / Cr / Mo

Wire feedstock(s)

To be published

Summary

S690 is a high yield structural steel used in lifting equipment, the construction industry and offshore industry.

Mechanical properties
WAAM (build dir.)
WAAM (build dir.)
Compared to trad. S690
Straight lines
Oscillation
YST * (MPa)
733
533
690
UST ** (MPa)
830
790
770-940
EL ***
19.5%
21.5%
14%
The above mentioned mechanical properties can vary according to design changes, process parameters optimization and strategy selection.
No additional heat treatment was applied after production.
* Yield Strength
** Ultimate Strength
*** Elongation
Use cases at RAMLAB

To be published


General remarks
For the latest version of this document go to RAMLAB.com

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.