IDENTIFICATION
Griduct 4, E 9018-B3
CLASSIFICATION
AWS/SFA 5.5: E 9018B3, BS 2493 2CrMoBH,
DIN 8575: E CrMo2B26
DESCRIPTION
Hydrogen controlled, heavy coated, basic type electrode depositing a low carbon 2.25% Cr / 1.0 Mo weld metal. It is intended for welding creep resisting steels of similar composition used in steam generation plant operating at temperature up to 600°C. The weld deposit meets x-ray / radiographic quality requirements.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Cr | Mo |
| 0.05 - 0.12 | 0.4 - 0.9 | 0.2 - 0.6 | 0.025 max | 0.03 max | 2.0 - 2.50 | 0.90 - 1.25 |
MECHANICAL PROPERTIES (RANGE)
| UTS (MPa) | PS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 620 - 740 | 530 - 620 | 17 - 24 | 27±2°C | 40 - 90 |
TYPICAL APPLICATIONS
• ASTM A 199, A 200,
• A 213 Grade T22, T36 & T4
• A 182 F 22
• A 387 Grade D
• A 217 WC9
• A 335 Grade P 22
• Chemical and Petrochemical industries where resistance to hydrogen attack, corrosion from sulphur bearing crude oil and stress corrosion cracking in sour atmosphere is required.
REDRYING TEMPERATURE FOR ELECTRODES : 300°C / 1 hr
MICROSTRUCTURE : In PWHT condition, the microstructure consists of tempered bainite
ASME IX QUALIFICATION : QW 432 F - NO, QW 442 A - NO 4
WELDING POSITION :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps | Packing / Box (kg) | Packing / Box (Pcs) |
| AC (70V) / DC (+) | ||||
| 2.5 | 350 | 60 - 90 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 350 / 450 | 90 - 140 | 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 |