ERCuNi | HB SPEICAL ALLOY

ERCuNiHB Special Alloy2020-03-27T14:13:39+08:00

ERCuNi

* Specification

AWS/ASME Spec 5.7

AWS Class ERCuNi

UNS C71581

* Chemical Composition,%

Mn	Si	P	Ni+Co	Fe	Cu	Pb	Ti
≤4	≤0.25	≤0.02	29-32	0.4-0.75	Rest	≤0.02	0.2-0.5

* Typical Welding Parameter & Mechanical Property

Diameter		Process	Volt	Amps	Shielding Gas
In	mm	Process	Volt	Amps	Shielding Gas
0.035	0.9	GMAW	26-29	150-190	Spray Transfer 100% Argon
0.045	1.2	GMAW	28-32	180-220
1/16	1.6	GMAW	29-33	200-250
1/16	1.6	GTAW	14-18	90-130	100% Argon
3/32	2.4	GTAW	15-20	120-175	100% Argon
1/8	3.2	GTAW	15-20	150-220	100% Argon

	Tensile Strength MPa(ksi)	Yield Strength MPa(ksi)	Elongation %
AWS requirement	345(50)	Not specified	Not specified
Typical results as welded	360(53)	140(21)	32

* Feature

For welding of 70/30, 80/20 and 90/10 copper-nickel alloys.

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.

* Application

Used for TIG and MIG and oxy-fuel welding of 70/30, 80/20 and 90/10 copper-nickel alloys.

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