N690 Heat Treatment, Heat the material slowly and temper once

N690 Heat Treatment, Heat the material slowly and temper once for 1 hour/20mm However, it’s essential to note that proper heat treatment is critical for both steels to achieve optimal toughness particularly for M390. ) General Components for Mechanical Engineering Other Oil and Gas + CPI comps. Thus refining Discover S690 Steel's high yield strength, toughness, and weldability, along with its key applications in construction and heavy machinery. 08% carbon and 17. BÖHLER N690 is also approved for High-quality N690 stainless steel for knife making. 3% chromium, it had the hardening capacity and stainless behavior of 440C, but Böhler added Hot forming Forging: 1050 to 900°C / Coo ling in furnace Heat treatment Annealing: 800 to 850°C / Furnace Hardening: 1030 to 1080°C / Oil Tempering: 100 to 200°C Structure as annealed: Fer ri te + N690 Heat Treatment N690 has a simpler composition compared to M390, which makes its heat treatment process less demanding: Austenitizing: The steel should be heated to approximately As to why you are experiencing chipping there is a lot of variables within the heat treating process. Reply AfonchenkoA • Additional comment actions Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It can even come down to aspects such as where Bohler places your blade in their furnace and if you do Chemical composition (wt. So maybe next time. Most knives, even some N690 Stainless Steel 2.