2. Stress concentration charts

In a second design check for Stress concentration charts, a steel part has rotating-beam endurance estimate $S'_e=275\,\mathrm{MPa}$, surface factor $k_a=0.85$, size factor $k_b=0.88$, load factor $k_c=1.00$, temperature factor $k_d=1.00$, and reliability factor $k_e=0.897$. What corrected endurance limit should be used?