CMnSiCrNiMoCuSP≤0.080.5 2.5≤0.9018.0-21.09.0-11.0≤0.75≤0.75≤0.030≤0.040chemical composition %Mechanical properties of metal cladding Tensile strengthMPaElongation%%≥550≥35Dia and reference currentDia (mm)φ2.0φ2.5φ3.2φ4.0φ5.0Current A30-5050-8080-110110-150150-200