N-CuNi

Specification

AWS Specification: AWS A5.6 ECuNi
JIS Specification: N/A
Other Specification: N/A

Description

N-CuNi is a DC arc welding electrode that gives 70% Cu-30% Ni Cupro-Nickel deposit
Weld metal shows good corrosion resistant fatigue

Application

Welding of curpo-nickel clad steel
Build up welding of heat exchanges, distillers, and chemical industry equipment
Welding of similar and dissimilar metals, such as various copper alloys

Remarks

Use DC (+) current

Preheating is not necessary and avoid continuous welding

Keep the interpass temperature under 100�C

Arc length should be as short as possible

Adopt straight bead method

Do not use excessive current in order to prevent the dilution from base metal for build-up welding of carbon steel

Dry the electrodes at 200-250�C for 30-60 minutes before use

Technical Data

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

Cu	Si	Mn	Fe	Ni
Bal.	0.26	1.15	0.65	30.22

TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL DEPOSITS:

Yield Point N/mm² (KSI)	Tensile Strength N/mm² (KSI)	Elongation %
327 (47)	425 (62)	38

SIZE AND RECOMMENDED CURRENT RANGE: DC (+)

DIAMETER (mm)		3.2	4.0	5.0
LENGTH (mm)		350	350	350
Current Amp	Flat	70 - 110	100 - 150	130 - 180
Current Amp	Vertical & Overhead	65 - 105	95 - 140	-

Welding Positions:	FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD
Approvals:	N/A

NOTE:

The information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and Industrial Welding Corporation expressly disclaims any liability incurred from any reliance thereon. Typical data and test results for mechanical properties, deposit, or electrode composition and other properties were obtained from a weld produced and tested according to prescribed standards and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design, and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.