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GRIDUR–250

IDENTIFICATION
Gridur 250

CLASSIFICATION
EN 14700:EFe1, DIN: 8555:E1-UM-300

DESCRIPTION
Gridur 250 is a thick basic coated MMA Electrode for producing hardfacing deposits of medium hardness, which can be machined by chip-forming.  Good weldability when positional welding, the weld deposit is crack and porosity resistant.

WELD METAL ANALYSIS (RANGE) %

C Mn Si Cr Fe
0.10 max 0.8 max 0.9 max 3.0 max Remainder

MECHANICAL PROPERTIES (RANGE)

Heat Treatment Hardness
As welded 275 - 325 HB

TYPICAL USES

Particularly suitable for hardfacing wear-resisting parts subject to sliding impact e.g. Slide ways, shock resistance e.g. cams and rolling impact resistance, e.g. rotors. Typical applications include rails, rail crossings, switch points, sprockets and wearing parts, such as rope pulleys, tumblers, rollers, caterpillar track rollers and links, wheel flanges, stud links and similar components.

APPLICABLE FOR

For welding of fine grained steels and steels containing approximately 1 % Chromium, 0.5 % Nickel, 0.5% Copper, steels of dissimilar compositions having greater resistance to atmospheric corrosion. Excellent for weathering steels like Corten - A & B Steels, SAILCOR, ETC and of radiographic quality weld.

WELDING PROCEDURE

Keep dry and avoid condensation.  Re-drying recommended at 300-3500C/ 2 Hrs. for 5 times max.

PACKING PARAMETERS

Size (mm) Length (mm) Amps Packing / Box (kg)
AC (70V) / DC (+)
2.5 350 60 - 80 5 x 4 = 20
3.15 / 3.20 450 110 - 130 5 x 4 = 20
4 450 140 - 180 5 x 4 = 20
5 450 190 - 240 5 x 4 = 20