GRIDUCT 80B6

CLASSIFICATION : AWS/SFA 5.5 E8018-B6 BS 2493-85 E5CrMoB, DIN 8575-84 EcrMo5B20+

CHARACTERISTICS :

A basic coated low hydrogen electrode depositing a low carbon 5.0% Cr / 0.50 % Mo weld metal. It is intended for welding creep resisting steels of matching composition used widely in chemical and petrochemical plants because of excellent resistance to hydrogen attack and corrosion by high sulphur crude oils at service temperatures upto 650°C.

TYPICAL USES :

  • Boilers, superheaters, heat exchangers, piping and pressure vessels in oil refineries.
  • ASTM A387 Gr 5
    ASTM A336 Gr. F5

    ASTM A155 Gr 5 Cr and

    ASTM A335 Gr P5 and P5b

    ASTM A213 Gr T5 and T5b

MICROSTRUCTURE :In PWHT condition : tempered bainite

ASME IX QUALIFICATION :QW-432-F-NO 4, QW-442-A-NO 4

WELD METAL ANALYSIS (RANGE) :

C Mn Si S P Cr Mo Ni
0.05 -0.10 0.5 - 1.0 0.20-0.60 0.030 max 0.030 max 4.0 – 6.0 0.45-0.65 0.40 max

ALL WELD MECHANICAL PROPERTIES (RANGE) PWHT – 740°C/2Hrs :

Tensile Strength N/mm2 Yield Stress N/mm2 Elongation (%) (L=4D) Charpy V-notch impact value in joules
555-640 470-550 19.0-26.0 Temp Joules
27+2°C 50-120

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS AC (70OCV)/DC(+) PACKING PER BOX WEIGHT IN KG. FOR 1000 Pcs (Approx.)
2.50 350 60-90 160X4=640 20.0
3.15 450 90-130 110X4=440 42.0
4.00 450 140-190 70X4=280 64.0
5.00 450 190-250 45X4=180 100.0