GRITINOX 904L

IDENTIFICATION : GRITINOX 904L E385

CLASSIFICATION : AWS/SFA 5.4 E 385-17, DIN 8556-86 E20.25.5L CuR26

CHARACTERISTICS :

A rutile flux coated electrode designed for welding the fully austenitic stainless steels of the 20%Cr/25% Ni/4.5 % Mo/ Cu type, used for their very high resistance to corrosion in severe, non-oxidising environments like sulphuric acid. The low carbon, high alloy content of the deposited weld metal gives excellent resistance to intergranular corrosion and stress corrosion cracking combined with superior resistance to crevice and pitting corrosion. The weld metal is of X-ray quality.

TYPICAL APPLICATION :

  • DIN 1.4500, 1.4536, 1.4539, Sandvik, 2RK65, Vddeholm 904L, Avesta 254SLX.
  • Tanks, process vessels, piping systems,agitators,rotors, cast pumps and valves for use in the fertiliser, phosphoric, sulphuric acid, acetic acid plants and in salts and sea water environments.

MICROSTRUCTURE : In the welded condition, the weld metal microstructure is fully austenitic (FN-0)

SCALING TEMPERATURE : Approximately 1000°C in air

WELD METAL ANALYSIS (RANGE) % :

C Mn Si Cr Ni Mo Cu S P
0.03 max 1.0-2.50 0.75 max 19.5-21.5 24.0-26.0 4.2-5.2 1.2-2.0 0.02 max 0.03 max

MECHANICAL PROPERTIES (RANGE) :

Ultimate Tensile Strength MPa Yield Strength MPa Elongation (%) (L=4D) Charpy V-notch Impact Strength
530-630 380-480 30-42 Temp Joules
0°C 60-120

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS AC(70 OCV)/DC(+) PACKING PER BOX (Pcs) WEIGHT / 1000 Pcs (kg)
2.50 350 50-80 100x6 = 600 20
3.15 350 80-120 60x6 =  360 32
4.00 350 130-180 40x6 = 240 52