Table of Contents
Fatigue strength: CX steel (Sxx/STM)
This page presents the S-N curves and fatigue limit of CX steel samples that underwent shot-peening, heat treatment and machining that removed allowance of 0.5mm (in that order), obtained using the bending tests of rotating bars with AM layers angle 45° to the axis of rotation.
Production and prost-processing conditions
| Build orientation of longitudinal axis | angle 45° |
|---|---|
| Position with respect to inert gas flow | undefined |
| Post-processing | shot-peening → heat treatment → machining allowance 0.5mm |
Experimental S-N curve
Experimental S-N curve
| Experimental method | ISO1143, rotating bending test R=-1 |  |
|---|---|---|
| Run-out criterion | 107 cycles | |
| AM layers | angle 45° to axis of rotation |
Wöhler curve
| Fatigue limit (MPa) | 556 |
|---|---|
| Number of cycles to failure N | N=7,45⋅10<html>20</html>⋅S<html>-5,13</html> |
| Stress amplitude S (MPa) | S=11750⋅N<html>-0,195</html> |
Explanation of the terms are given at the page Fatigue strength description.
This page is a part of the section DMLS/SLM: Fatigue design rules.