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Welding Consumables >> Nickel Based Welding Consumables >> ERCuNi
 
Description
ERCuNi can be used for MIG overlay on steel after a first layer with Nickel 208. Dissimilar welding applications include joining copper-nickel alloys to Nickel 200 or nickel-copper alloys.. It can equivalent to: Oxford Alloy 67  FM 67, Techalloy 413.
Applications

ERCuNi is used for TIG, MIG, and oxyfuel welding of 70/30, 80/20 and 90/10 copper- nickel alloys. This filler metal can be used for MIG overlay on steel after a first layer with Nickel 208 (Filler Metal 61). Dissimilar-welding applications include joining copper-nickel alloys to Nickel 200 or nickel-copper alloys.
Product Details

Chemical composition
Grade Chemical composition(%)
ERCuNi C Mn Si S P Ni
0.03 1.0 0.25 0.01 0.02 30~32
Al Fe Ti Cu Others

0.15 0.4~0.75 0.2~0.5 Bal 0.5

Mechanical properties

Tensile Strength Yield Strength Elongation
360 Mpa 140 Mpa 32%

Welding paramaters

Process  Diameter  Voltage  Amperage  Gas 
TIG .045     (1.2mm) 13-16 80-110 100% Argon                          
1/16     (1.6mm) 14-18 90-130 100% Argon                          
3/32     (2.4mm) 15-20 120-175 100% Argon                          
1/8      (3.2mm) 15-20  150-220

100% Argon  

MIG  .045     (1.2mm) 28-32 180-220 75% Argon + 25% Helium
1/16     (1.6mm) 29-33  200-250 75% Argon + 25% Helium 
SAW  3/32     (2.4mm) 28-30 275-350 Suitable Flux may be used
1/8      (3.2mm) 29-32 350-450 Suitable Flux may be used
5/32     (4.0mm) 30-33  400-550 Suitable Flux may be used 
Specifications
AWS A5.7, ERCuNi / ASME II, SFA-5.7, ERCuNi DIN 1733 S-CuNi30Fe UNS C71581 Werkstoff Nr. 2.0837 ISO S Cu 7158 Europe S Cu 7158 (CuNi30).
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