GEMET 307

DESCRIPTION : An extruded light coated basic type austenitic stainless steel electrode.
CLASSIFICATION :E 18.8 Mn B 20

WELDING PROPERTIES :

Weldable in all positions. Arc striking and rearc striking properties are excellent. Arc is soft & stable. The spatter is very low and the slag is easy to remove. The weld deposits is free from cracks & porosity. The weld bead is fine, rippled, smooth and regular.


APPLICABLE FOR :

Austenitic manganese steel to mild steel and weld metal has excellent heat resistant properties upto 9000 C. it is applicable for crack free joints in difficult steel & armow steel.

TYPICAL USES :

Specially designed for joining austenitic manganese steel (12% Mn) to mild steel & for producing crack free joints in difficult steels, low alloy & high alloy steels including armow plate. Excellent for repairing cracks in austenitic manganese steel points & crossings, & laying buffer layer on difficult steels before hardfacing.

WELD METAL ANALYSIS (RANGE) %:

C Mn Si S P Cr Ni
0.12 max 5.00-7.00 0.30-0.8 0.03 max 0.03 max 18.0-21.0 8.50-11.0

WELDING PROCEDURE

The base metal should be free from oil grease or dirt before welding. Keep a short arc length. The weld bead should be cleaned properly with stainless steel brush and ensure proper fitup on joints. Do not use more than recommended current limit. Redry electrode at 300° C ihr to better result.

MECHANICAL PROPERTIES (RANGE) :

Tensile Strength Mpa Elongation (%) (L=4D) Charpy V-Notch Impact Value
560-670 30-40 Temp Joules
27° C 60-90J

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS POLARITY WT PER CARTON WT PER BOX
2.50 350 60-85 DC (+) 2Kg 10Kg
3.15 350 80-100 DC (+) 2Kg 10Kg
4.00 350 110-140 DC (+) 2Kg 10Kg