Griduct 98D1, E 9018-D1
AWS/SFA 5.5: E 9018-D1, BS 2493: MnMoBH,
DIN 8529: ESY 5564 Mn MoB, IS 1395: E 63 BD126
Medium coated, hydrogen controlled electrode depositing Mn - Mo low alloy weld metal having tensile strength > 620 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.
WELD METAL ANALYSIS (RANGE) %
MECHANICAL PROPERTIES (RANGE)
• For welding low alloy steel AISI 4130, 4140 for the repair and fabrication of manganese molybdenum castings.
• 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. fabrication of steel to IS 8500-91 Gr 540B, 570B, 590B, IS2002-92Cr3
HARDNESS OF THE WELD METAL : 210 Brinell max
ASME SECTION IX QUALIFICATION : QW- 432 F No.4, QW-442 A No. 11
CORROSION TEST :
Passes SSCC test as per NACE standard TM-01-75. Passes HIC test as per NACE standard TM-02-84
REDRYING TEMPERATURE : 300°C / 2 hrs
The PWHT requirements will depend on a number of factors including, base material, property requirements, and need to conform to NACE etc. Temperatures will normally be about 620°C.
WELDING POSITION :