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GM 812

SOLID WIRE FOR MIG WELDING

IDENTIFICATION
GM 812, ER CuNi

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

DESCRIPTION
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.

CHEMICAL ANALYSIS (RANGE) %

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 balance

MECHANICAL PROPERTIES (RANGE)

UTS (N/mm²) PS (N/mm²) EL (%) (L=4D) Hardness (SHV)
345 - 430 180 - 250 40 105

TYPICAL APPLICATIONS

  • 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)

SHIELDING GAS : Pure Argon (99.99%)

PACKING PARAMETERS

Size (mm) Weight / Spool (kg)
0.8 12.5
1 12.5
1.2 12.5