Avesta P5 BASIC description: AVESTA P5 basic is a highly alloyed low carbon electrode. It is designed for dissimilar welding between stainless and mild or lowalloy steels but can also be used for overlay welding, providing an 18 Cr 8 Ni 2 Mo type deposit from the very first layer. P5 basic provides a somewhat better impact strength than the 3D type electrodes.