heat treatment and testing: normalized 940 - 955°C, oil quenched 830°C, 540°C temper. R.R. Moore rotating beam fatigue specimens with a min. diam. of 5.84 mm; 45°, 0.25 mm root radius notch, 0.51 mm deep. |
AISI E4340H; alloy steels, UNS H43406, ASTM A304, SAE J1268, DIN 1.6562 |