AISI4340 alloy shaft needs to be quenched and tempered after rough machining to achieve the best performance. After the heat treatment, the tensile performance can reach more than 1300Mpa, and the ultrasonic flaw detection is qualified. #AISI4340 #AISI4140 #AISI4130 #AISI1045 #34CrNiMo6 #30CrNiMo8 #Alloyshaft #Heattreatment https://www.instagram.com/p/CXkIZF_JAzy/?utm_medium=tumblr












