GEMET 822N

IDENTIFICATION : Gemet 822N E Ni Cr Fe2
CLASSIFICATION :AWS/SFA 5.11 ENiCrFe2 DIN 1736 EL-NiCr16FeMn

DESCRIPTION :

A versatile non-synthetic electrode for welding of Inconel 600 and similar composition alloys.

CHARACTERISTICS :

Medium heavy coated, basic type all- position electrode manufactured by using inconel core wire intended for welding Inconel 600, Incoloy 800, Incoloy DS and similar composition alloys. The electrode deposits fully austenitic weld metal immune to hot cracking and not prone to embrittlement. The weld metal retains toughness after more than 10,000 hrs at temperature above 900°C.One of the most widely used multipurpose nickel-base electrode.

APPLICATIONS :

  • For welding Inconel 600,Incoloy 800, Incoloy DS.
  • High nickel alloys to themselves and to mild,low alloy ,stainless steels.
  • Inconel 825 to stainless steel ,low alloy steel for use in furnace equipment and petrochemical plants up to 1000°C.

Preheat: Not generally required but useful for higher carbon hardenable steel.

ASME IX qualification: QW –432,FNo -43

Microstructure: High nickel austenite with some carbide.

WELD METAL COMPOSITION (%) :

C Mn Si S P Fe Cr Ni Cu Nb Mo
0.10 max 1.0-3.5 0.75 max 0.015 max 0.03 max 12.0 max 13.0-17.0 62.0 min 0.50 max 0.5-3.0 1.0-2.5

MECHANICAL PROPERTIES OF THE WELD METAL (RANGE)

Ultimate Tensile Strength N/mm2 0.2% Proof stress N/mm2 Elongation (%) (L=4d) Charpy V-notch Impact strength in joules-196° C
650-770 380-490 30-45 50-120

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) DC(+) PACKING PER CARTON (KG.)
2.50 350 50-70 2 x 10 = 20
3.15/3.20 350 70 – 100 2 x 10 = 20
4.00 350 90-130 2 x 10 = 20
5.00 350 130-170 2 x 10 = 20

Approved By :