In-depth articles on metallurgy, materials science, and metal processing — written for engineers and learners alike.
Step-by-step tutorial on designing a quench and temper heat treatment cycle. Uses TTT diagram + Jominy hardenability data to select quench medium, verify through-hardness, and specify tempering temperature for 4140 steel.
Free Ac1 and Ac3 critical temperature calculator for steel heat treatment design. Uses Andrews (1965) empirical equations to predict austenitising temperature range from steel composition.