ERNiCr-4

Description
ERNiCr-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.

Applications
High 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 Details
Chemical composition

Grade	Chemical composition(%)
ERNiCr-4	C	Mn	Si	S	P	Ni
	≤0.05	≤2.0	≤0.2	≤0.01	≤0.01	Bal
	Cr	Fe	Ti	Cu	Others
	42~46	≤0.3	0.3~1.0	≤0.15	＜0.5

 

Mechanical properties

Tensile Strength	Yield Strength	Elongation
730 Mpa	360 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
	3/32”     (2.4mm)	28-30	275-350	Suitable Flux may be used
SAW	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 A5.14, ERNiCr-4 / ASME II, SFA-5.14, ERNiCr-4 UNS N06072, Europe NiCr44Ti, ISO SNi6072