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Home » Products » Low Hydrogen Electrode » Premium 90 B3

Premium 90 B3

Premium 90 B3
Premium 90 B3
Product Code : 36
Product Description

Classification :

  • IS : 1395 - 82 : E 63 B -B3 26 Fe
  • AWS / A 5.5 : E 9018-B3

Description :

A basic coated, low hydrogen electrode which deposits 2.25% Cr - 1% Mo weld metal. Suitable for welding 2.25% Cr- 1% Mo, Cr-Mo-V steels as well as cast steels of similar composition. The welds are of radiographic quality. Excellent strength and creep resistance at elevated temperature up to 575oC.

Applications :

  • Steam boiler
  • Power plants equipment
  • Steam and super heater piping
  • Chemical plants
  • Oil refineries.

Chemical Composition of Weld Al (wt.%)

C

Mn

Si

Cr

Mo

0.05-0.12

0.9 max

0.8 max

2.0-2.50

0.9-1.2

Mechanical Properties Of Weld Metal :

YS

51 - 57 Kgf/mm2

UTS

65 - 72 Kgf/mm2

Elongation

18 - 24 %

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 - 220

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

Recommendations : Re-dry the electrodes at 350oC for one hour or at 250oC for two hours. Keep the re dried electrodes in a holding oven having 120o-150oC temperature. Use the electrodes directly from the holding oven. The pre-heat and Inter pass temperature should be maintained at 160oC - 190oC. The welded section should be stress-relieved at 690oC at-least for one hour.


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