DescriptionERNiCr-4 is a high Chromium-Nickel alloy used for joining, re-pair and overlay cladding of Ni-Cr and Ni-Fe-Cr components. It re-sists high temperature corrosion including fuel-ash corrosion and erosion in atmospheres containing sulfur. It can equivalent to: FM72M Techalloy 72.
ApplicationsHigh Chromium Nickel alloy used for joining, repair and overlay cladding of Ni-Cr and Ni-Fe-Cr components. Material is resistant to high temperature corrosion including fuel-ash corrosion and erosion in atmospheres containing sulpher. This material is primarily used for boiler tube overlay in coal fired boiler systems.
Product DetailsChemical composition
| Grade | Chemical composition(%) |
| ERNiCr-4 | C | Si | S | Mn | P | Ni |
| ≤0.05 | ≤0.2 | ≤0.01 | ≤2.0 | ≤0.01 | Bal |
| Cr | Ti | Cu | Fe | Others | |
| 42~46 | 0.3~1.0 | ≤0.15 | ≤0.3 | <0.5 | |
Mechanical properties
| Tensile Strength | Yield Strength | Elongation |
| 730Mpa | Mpa | 30% |
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 |
AWS A5.14, ERNiCr-4 / ASME II, SFA-5.14, ERNiCr-4 UNS N06072, Europe NiCr44Ti, ISO SNi6072