IDENTIFICATION
GRIBINOX 309Nb E309NB-15
CLASSIFICATION
AWS/SFA 5.4: E309Nb-15
DESCRIPTION
An extruded, basic based electrode depositing 25 Cr/12 Ni/1 Nb type Stabilised stainless steel deposit. Arc is soft & stable with easy strike and restrike. Low spatter and easily detachable slag. Weld bead is finely - rippled.
The deposit is Nb - Stabilised and resistant to intergranular corrosion. It can withstand upto 1100°C. Joining stainless steel to low alloy or carbon steel.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Cr | Ni | Nb |
| 0.10 max | 1.0 - 2.50 | 0.9 max | 0.03 max | 0.03 max | 22.0 - 25.0 | 12.0 - 14.0 | 0.7 - 1.0 |
MECHANICAL PROPERTIES (RANGE)
| UTS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | ||
| 560 - 660 | 30 min | 27°C | 50 - 100 |
TYPICAL APPLICATIONS
• Mainly used for welding 309 and 309 Nb plates service in the range upto 850°C requiring resistance to sensitisation and consequent intergranular corrosion failure in chemical plants, furnaces.
• Also used for improving wear resistance by surfacing / building up of wear surfaces of wear resistant steels subject to high temperatures upto 1100°C.
• Joining stainless steel to low alloy or carbon steel.
• Applicable for AISI 309 Cb type stainless Steels, straight chrome steels and joining stainless steel to low alloy and carbon steels.
WELDING PROCEDURE
The base metal should be free from oil, Grease or Dirt before welding. Keep a short arc - length and avoid weaving. Weld bead should be cleaned with stainless steel wire brush.
WELDING POSITION :
PACKING PARAMETERS
| Size (mm) | Length (mm) | AMPS DC (+) | Packing / Box (kg) | Packing / Box (Pcs) |
| 2.5 | 350 | 70 - 90 | 2 x 5 = 10 | 94 x 5 = 470 |
| 3.15 / 3.20 | 350 | 100 - 120 | 2 x 5 = 10 | 60 x 5 = 300 |
| 4 | 350 | 120 - 140 | 2 x 5 = 10 | 38 x 5 = 190 |
| 5 | 350 | 150 - 190 | 2 x 5 = 10 | 24 x 5 = 120 |