GM 812

Solid Wire For MIG Welding
IDENTIFICATION : ERCuNi

SPECIFICATION : AWS/SFA 5.7: ERCuNi, BS 2901 :Pt 3, Grade C 18, DIN 1733:SG-CuNi30Fe

CHARACTERISTICS :

Copper –nickel solid wire depositing 70Cu-30Ni weld metal .This wire is used for welding similar cupronickel alloys and Cupro-Nickel type 90% Copper 10% Nickel. The weld metal is resistant to sea-water, corrosion.

TYPICAL APPLICATION :

For-off-shore pipe and cladding systems, desalination plants, condensers and evaporators, heat exchangers, etc. Materials to be welded: BS: 70CuNi CN103-CN107, ASTM/ASME: CA715/UNS C71500, CA964/UNS C96400, OTHERS: Kunifer 30(IMI), Cunifer 30& 302(VDM).
Also suitable for welding 90/10 cupronickels below:

  • 90CuNi CN101 CA 706/UNS C70600 Kunifer 0(IMI)
  • CN102 CA 962/UNS C96200 Cunifer 10(VDM)

CHEMICALCOMPOSITION OFTHE WIRE % :

Ni Si Mn Pb Ti P S Fe Cu
30.0-32.0 0.20 max 0.5-1.0 0.007 max 0.20-0.50 0.01 max 0.01 max 0.40- 0.75. Remainder (balance)

ALL WELD MECHANICAL PROPERTIES (TYPICAL) :

Ult. Tensile Strength N/mm2 0.2% Proof Stress N/mm2 Elongation % (L=4D) Hardness HV
345-430 180-250 40 105

SHIELDING GAS : Pure Argon (99.99%)


RECOMMENDED CURRENT AND PACKING DATA :

Size (mm) WEIGHT PER SPOOL IN KG
0.80 12.50
1.0 12.50
1.2 12.50