GRIDUCT 4(SPL)

CLASSIFICATION : AWS/SFA 5.5 E8018-B3L DIN 8575 BS 2493 E2CrMoL2B1+

WELDING PROPERTIES :

A basic coated, iron powder hydrogen controlled electrode which deposits extra low carbon 2.25 % Cr / 1.0 Mo weld metal. It is intended for welding creep resisting steels of similar composition used in steam generating plants operating at temperature upto 600°C. The electrode has excellent all positional operability which is particularly advantageous for pipe welding applications. The weld metal is of X-ray quality.

TYPICAL USES:

ASTM A 387 Grade 22, ASTM A355 Grade P22, ASTM A199 Grade T22, T3b and T4, ASTM A 213 Grade T22, and T3b. For welding of pipe work, pressure vessels, rectification of castings, fabrication of steam chests, forged valve bodies, headers, superheaters and heat exchangers.


ASME IX QUALIFICATION : QW 432 F No. 4 QW 442 A No. 4

MICROSTRUCTURE: In tempered condition, microstructure consists of tempered bauxite.

DIFFUSIBLE HYDROGEN CONTENT :Max. 4ml/100 gm. of weld metal OF THE WELD METAL

REDRYING TEMPERATURE : 300°C/2 hrs, 5 times , total 10 hrs.

WELD METAL ANALYSIS (RANGE) % :

C Mn Si Cr Mo S P
0.02-0.05 0.50-0.90 0.20-0.60 2.0-2.5 0.90-1.20 0.025 max 0.030 max

MECHANICAL PROPERTIES (RANGE):

Tensile Strength N/mm2 Yield Stress N/mm2 Elongation (%) (L=4D)
580-720 N/mm2 500-610 N/mm2 17-25

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS 68 PACKING PER BOX WEIGHT 1000 Pcs, Kg.
2.50 350 60-95 160x4=640 20
3.15 450 90-130 110x4-440 42
4.00 450 130-170 70x4=280 68
5.00 450 190-260 45x4=180 104