Alloy Steel 4140QT, 4340QT, Carbon steel 1045
https://www.youtube.com/watch?v=8T39qVa5sP0&list=UULF6O-EGnFBednsuuBmJk11Qg&index=20 ๐ ๐ฆ๐๐ฒ๐ฒ๐น ๐๐๐ผ๐ฐ๐ธ ๐ผ๐๐ฒ๐ฟ ๐ฎ,๐ฌ๐ฌ๐ฌ๐๐ผ๐ป๐ ๐ผ๐ณ ๐๐น๐น๐ผ๐ ๐ฆ๐๐ฒ๐ฒ๐น๐ ๐ณ๐ฌ๐ฌ๐๐๐ of Alloy Steels 4140QT and Carbon Steels S45C/AISI 1045 are […]