Why do fitter saws T8, T10, T12 and other steel materials work harder than saw 10,20 steel, and the saw blades tend to be dull?
T8, T10 and T12 are carbon tool steels. They are very hard. The Brinell hardness in annealed state is more than 300.Manual saw blade is T12 material, just quenching, hardness is greater.10 and 20 are low carbon, high quality structural steel, very soft, Brinell hardness is less than 155.Therefore, the fitter saw, laborious, the saw is very easy to wear.
T8, T10, T12 belongs to carbon tool steel, carbon content is 0.8%, 1%, 1.2%, and high content of cementite, high hardness steel and 10,20 steel; high quality carbon steel, which belongs to the low carbon steel, steel hardness is low, so the T8 T10 T12, saw fitter, steel material etc. 10,20 steel saw blade than laborious, easily to be worn.
