STEELOMATIC – 309 MO Back to Gallery

CLASSIFICATION

AWS IS
E- 309Mo-16 E 23.12.2 R 26

DESCRIPTION AND APPLICATIONS:

It is a rutile type all position electrode depositing Radiographic quality 25Cr-12 Ni-2.5 Mo weld deposit. Gives a quiet and stable arc, low spatter, smooth weld use and easily detachable slag. The weld has excellent resistance to corrosion, oxidation resistance is satisfactory up to 1050°C.The electrode is extensively used in dissimilar metal joining between MS and low alloy steels, overlaying and buffering applications, welding straight chrome steel etc.

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL (%)

C Mn Si Cr Ni S P Mo
0.06 1.80 0.50 23.5 12.8 0.014 0.016 2.5


TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL

UTS Kg/mm2 Elongation (L = 4d) % CVN Impact Strength at RT Kgfm
62.0 35.0 7.0


WELDING CURRENT AND PACKING DATA: AC/DC (+)

SIZE D X L (mm) 2.5 X 350 3.15 X 350 4.0 X 350
CURRENT (AMPS) 50-80 80-100 110-140

 

PRECAUTIONS:

  • Storing of Electrodes should be done in a warm storage room( temp. 120°C – 150°C) with low relative humidity to minimize the rise of moisture pick up
  • Electrodes slightly affected by moisture should be carefully dried for min. one hour at temp.250°C-300°C before use.