Hole machining
Drilling Grade Description
P
Steel, cast steel, ferritic / martensitic stainless steel, malleable cast iron
Basic grade
AP301U(P15-P35) Recommended grade for steel drilling. High strength and wear resistance ultra fine carbide substrate with nanostructured PVD coating in controllable layers, high coating adhesion, wear-resistance and strength.
AP351M(P25-P40) Recommended grade for drilling steel parts under unstable working conditions. Good toughness and wear resistance ultrafine crystalline substrate combined with nanostructure PVD coating. Good thermal cracking resistance, wear resistance and coating strength.
AP351U(P30-P45) Recommended grade for drilling steel parts under complex working conditions. Very tough substrate with nanostructured PVD coating. Good wear resistance and impact resistance.
Austenitic stainless steel, cast steel, manganese steel, alloyed cast iron, malleable cast iron, easy to cut steel
M
Basic grade
AP351M(M25-M40) Recommended grade for stainless steel drilling. Very tough and good wear resistance ultrafine crystalline substrate with nanostructured PVD coating. Good thermal cracking resistance, wear resistance and coating strength.
Heat resistant alloy S Basic grade AP351M(S25-S40) Recommended grade for heat resistant alloy drilling. Good toughness and wear resistance ultrafine crystalline substrate combined with nanostructure PVD coating, good resistance to thermal cracking resistance, wear resistance and coating strength. AP351U(S30-S45) Recommended grade for heat resistant alloy drilling under unstable working conditions and low speed. Very tough substrate with nanostructured PVD coating, good wear resistance and impact resistance.
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