Allooy Steel 1.251 + Aloy Steel + O1 (2) 1.251 + Aloy Steel + O1 1.2379 + Aloy Steel + D2 1.7035 + Aloy Steel + 5140 D2 + Titanium Nitride 1.7035 + Aloy Steel + 5140 1.7035 Stainless Steel + Sus304 1.72225 + Aloy Steel + 4140 1.72225 + Aloy Steel + 4140 440C + DLC Allooy Steel 1.2379 + Aloy Steel + D2 440C + DLC Allooy Steel