IDENTIFICATION
Griduct B8L, E 8018-B8L
CLASSIFICATION
AWS/SFA 5.5 E8018 B8L, BS 2493 9CrMoBLH,
DIN8575 ECrMo9LB26
DESCRIPTION
A medium–heavy coated, basic type, low hydrogen electrode depositing extra low carbon 9.0%Cr/1.0Mo weld metal. It is intended for welding in refineries and power plants. The weld metal meets x-ray/ radiographic quality code requirements.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Cr | Mo | Ni |
| 0.05 max | 0.5 - 1.0 | 0.2 - 0.6 | 0.025 max | 0.025 max | 8.0 - 10.5 | 0.85 - 1.20 | 0.40 max |
MECHANICAL PROPERTIES (RANGE) PWHT (726-7540C/1hr)
| UTS (MPa) | YS (MPa) | EL (%) (L=4D) |
| 590 - 720 | 520 - 620 | 19 - 24 |
TYPICAL APPLICATIONS
• For boiler superheater tubing heat- exchangers, piping and pressure vessels in oil refineries and
power plants.
• ASTM A 336 Grade F9
• ASTM A 217 C12 , BS 1504 Grade 629 and BS 3100 Grades 6291470
• ASTM A 335 Grade P9
• A 199 Grade T9, A200 Grade T9, A213 Grade T9
MICROSTRUCTURE : After PWHT, the microstructure consists of tempered martensitic bainite.
ASME IX QUALIFICATION : QW-432 F NO 4,QW-442 A NO 5
REDRYING OF TEMPEREATURE : 300° - 350°C / 2 hrs
WELDING POSITION :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps | Packing / Box (kg) | Packing / Box (Pcs) |
| AC (70V) / DC (+) | ||||
| 2.5 | 350 | 60 - 80 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 450 | 90 - 130 | 5 x 4 = 20 | 110 x 4 = 440 |
| 4 | 450 | 140 - 190 | 5 x 4 = 20 | 70 x 4 = 280 |
| 5 | 450 | 190 - 250 | 5 x 4 = 20 | 45 x 4 = 180 |