GRIDUCT 88D1NC

IDENTIFICATION : GRIDUCT 88 D1, E 8018-D1

CLASSIFICATION : AWS/SFA 5.5 :E 8018-D1, BS 2493: MnMoBH, DIN 8529 : ESY 5564 Mn MoB

CHARACTERISTICS :

Medium heavy coated, hydrogen controlled electrode depositing Mn-Mo low alloy weld metal having tensile strength > 550 Mpa. The weld deposit is nickel free and therefore satisfy NACE MR-01-75 in sour service requirements intended to ensure resistance to sulphur induced stress corrosion cracking combined with good sub-zero notch toughness.

TYPICAL APPLICATIONS :

AISI 4130, castings to ASTM A 487 2 A-B-C Fabrication of higher strength steels for off-shore oil well head process pipe work and fittings. Repair of medium strength low alloy steel castings.
Welding of API 5LX Grade 65

HARDNESS OF THE WELD METAL : 210 Brinell maximum

ASME SECTION IX QUALIFICATION : QW- 432 F No.4 ,QW-442 A No. 11

REDRYING TEMP : 300°C / 2 hrs

CORROSION TEST :

  • Passess SSCC test as per NACE standard TM-01-75
  • Passess HIC test as per NACE standard TM-02-84

ALL-WELD METAL COMPOSITON % :

C Mn Si S P Mo Ni
0.04-0.10 1.0-1.75 0.25-0.60 0.012 max 0.015 max 0.25-0.45 0.50 max

ALL-WELD MECHANICAL PROPERTIES AFTER SR AT 620°C/1 HR OR AS WELDED:

Ultimate Tensile Strength Mpa 0.2% Proof Stress Mpa Elongation %(L=4D) Charpy V-notch impact strength in joules
Temp Joules
560-650 470-560 19-26 -30°C 80-150
-51°C 30-70

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) CURRENT CONDITIONS AC 70-OCV/DC (+) PACKING PER BOX WEIGHT 1000 Pcs
2.50 350 60-85 150X4=600 21.0
3.15 450 100-130 100 X 4=400 37.0
4.00 450 140-180 65 X 4=260 65.0
5.00 450 180-220 45 X 4=180 98.0