... and physical & chemical test.We have passed certificate ISO9001 and ISO/TS16949, we have high quality and competitive price.1)high speed ... 600 degrees Celsius, the hardness don't drop clearly. It can cutting more speed than the low-alloy steel. 2.Mainly ... as turning, milling, cutter, planer, broaches, drills, taps, etc., it can also be used to hot-cold deformation tool, high temperature ...