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Product Code : 34

Product Description

Classification :

IS : 1395 - 82 : E 55 B -B2 26 Fe
AWS / A 5.5 : E 8018-B2

Description :

A low hydrogen iron powder type electrode which deposits 1.25% Cr - 0.5% Mo weld metal. Excellent for welding creep resistant 0.5 Cr-0.5 Mo, 1Cr-0.5 Mo steels. The weld metal displays excellent strength and creep resistance at elevated temperatures up to 550^oC. Metal recovery is above 110%.

Applications :

Pressure Vessels
Boilers
Creep resistant steels used in power plants, oil refineries, and chemical plants.

Chemical Composition of Weld Al (wt.%)

C	Mn	Si	Cr	Mo
0.10 max	12 - 18	0.5 max	0.03 max	0.03 max

Mechanical Properties Of Weld Metal :

YS	51 - 57 Kgf/mm²
UTS	57 - 67 Kgf/mm²
Elongation	20 % min

Current Conditions : AC (50V) / DC ( + )

Size (mm)	2.5 x 350	3.15 x 450	4 x 450	5 x 450
Amps	70 - 100	100 - 140	140 - 180	180 - 240

Welding Positions : F, H, V-up, OH

Recommendations :

Redry the electrodes at 350^oC for one hour or at 250^oC for two hours. Keep the re-dried electrodes in a holding oven having 120^o to 150^oCtemperature. Use the electrodes directly from the holding oven. The pre heat and inter pass temperature of 160^o - 190^oC is recommended. The welded section has to be stress relieved at 690^oC at least for one hour.