The nozzle is the component of a 3D printer,there are many different types of 3D printer nozzles, and it is important to use their different wear resistance and strengths correctly.Brass nozzles are suitable too for general 3D printing. but for abrasive materials tungsten carbide nozzles are ideal.
The main carbide grade for carbide 3D extruder tips are YG6 (ISO K20) and YG8(K30),which is with high hardness HRA89.0-HRA90.0 with excellent wear resistance and strengths. 





