IDENTIFICATION
Griduct 88D3, E 8018-D3
CLASSIFICATION
AWS/SFA 5.5: E 8018D3,
DIN 8556 ESY 5564 MnMoB BS: 2493: Mn MoBH
DESCRIPTION
A basic coated hydrogen controlled electrode of high strength, low alloy steels. It deposits 1.4% Mn-0.4% Mo weld metal which provides increased strength which ensures conformance to NACE requirements and high impact strength at subzero temperature. The deposited weld metal is of X-ray quality. Deposited weld metal has resistance to sulphide induced stress corrosion cracking in sour service and satisfy NACE MR-01-75 requirements.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Ni | Mo |
| 0.05 - 0.12 | 1.0 - 1.80 | 0.20 - 0.70 | 0.015 max | 0.020 max | 0.90 max | 0.40 - 0.65 |
MECHANICAL PROPERTIES (RANGE) PWHT 620± 14oC / 1 hr.
| UTS (MPa) | PS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 560 - 670 | 460 - 560 | 20 - 28 | -30°C | 48 - 100 |
| -51°C | 30 - 70 | |||
TYPICAL APPLICATIONS
• For welding low alloy steel AISI 4130, 4140 for the repair and fabrication of manganese molybdenum castings.
• Pressure vessels, forgings, castings,
• ASTM A 302 Grade B, ASTM A 336 Grade F30
• ASTM A 487 Class I N, I Q, 2N, 2Q, En 19
• For offshore oil head process pipework
and fittings.
HARDNESS OF THE WELD METAL : 225 BRINELL MAX.
ASME QUALIFICATION : QW 432 F NO: 4, QW 442 A NO : 11
MICROSTRUCTURE : In SR Condition, Microstructure consists of Tempered Bainite.
RECOMMENDED PREHEATING & INTERPASS TEMPRATURE : 93°C - 107°C
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 AC / DC (+) | Packing / Box (kg) | Packing / Box (Pcs) |
| 2.5 | 350 | 60 - 95 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 450 | 80 - 120 | 5 x 4 = 20 | 110 x 4 = 440 |
| 4 | 450 | 130 - 180 | 5 x 4 = 20 | 70 x 4 = 280 |
| 5 | 450 | 160 - 220 | 5 x 4 = 20 | 45 x 4 = 180 |