IDENTIFICATION
Griduct 98D1, E 9018-D1
CLASSIFICATION
AWS/SFA 5.5: E 9018-D1, BS 2493: MnMoBH,
DIN 8529: ESY 5564 Mn MoB, IS 1395: E 63 BD126
DESCRIPTION
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) %
| C | Si | S | P | Mn | Mo | Ni |
| 0.10 max | 0.25 - 0.60 | 0.025 max | 0.025 max | 1.00 - 1.75 | 0.25 - 0.45 | 0.90 max |
MECHANICAL PROPERTIES (RANGE)
| UTS (MPa) | PS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 630 min | 550 min | 20 min | -20°C | 60 - 100 |
| -51°C | 30 - 70 | |||
TYPICAL APPLICATIONS
• 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
PWHT :
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 :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps | Packing / Box (kg) | Packing / Box (Pcs) |
| AC 70-OCV / DC (+) | ||||
| 2.5 | 350 | 60 - 85 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 450 | 100 - 130 | 5 x 4 = 20 | 110 x 4 = 440 |
| 4 | 450 | 140 - 180 | 5 x 4 = 20 | 70 x 4 = 280 |
| 5 | 450 | 180 - 220 | 5 x 4 = 20 | 45 x 4 = 180 |