IDENTIFICATION
Gridur 250B
CLASSIFICATION
DIN 8555 E 1-UM -250
DESCRIPTION
Hydrogen controlled basic type electrode for tough easily machinable welds.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Cr |
| 0.12 - 0.18 | 0.9 - 1.35 | 0.9 - 1.30 | 0.025 max | 0.025 max | 8.0 - 9.0 |
TYPICAL APPLICATIONS
• Gridur 250B electrode is used for medium hardness hard facing with high resistance to abrasion both by sliding and rolling action.
• The tough weld metal can also withstand hard blows.
• Among other applications, Gridur 250B recommended for the last 2-3 layers of the rail welding process.
• The slag is easily removable and the weld metal can be machined with cutting tools.
HARDNESS IN AS-WELDED CONDITION : 250 - 280 BHN
REDRYING OF ELECTRODES : 300°C / 2 hrs
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps | Packing / Box (kg) |
| AC (70V) / DC (+) | |||
| 2.5 | 350 | 70 - 90 | 5 x 4 = 20 |
| 3.15 / 3.20 | 450 | 100 - 140 | 5 x 4 = 20 |
| 4 | 450 | 150 - 200 | 5 x 4 = 20 |
| 5 | 450 | 170 - 220 | 5 x 4 = 20 |