SUPRAMAX – 9018 G
Classification : AWS: E 9018 G
Characteristics : A medium heavy coated, hydrogen controlled, Iron powder type electrode for welding 71 kgf/mm2 class high tensile low alloy steel depositing X-ray quality & crack resistant welds. The weld deposit has excellent creep resistability and high notch toughness at low temp, down to -50°C
Applications : This finds extensive use in pressure vessels,piping penstock, earth moving equipment, machinery parts. Welding grain refine the Q and T Steel.
Weld Metal Properties (%) :
C = 0.08 Max Mn = 1.2-1.7
Si = 0.2-0.45 S = 0.03 Max
P = 0.03 Max Cr= 1.0-1.6
Mo = 0.25-0.4
All Weld Mechanical Properties :
UTS = 640N/mm2Min.
YS = 550N/mm2Min.
Elong (L=4d) % = 17Min
CVN Impact Value (J) at – 50°C: 30 Min
Precautions : Ensure the electrode is dry. In case of moisture pick-up, re-dry the electrodes at 300°C for one hour.