NHF-4140

Specification

AWS Specification: N/A
JIS Specification: N/A
Other Specification: N/A

Description

NHF-4140 is an all-position, low hydrogen electrode designed for welding SAE 4140 and similar heat-treatable steel where teh weld metal must match the heat treating properties of the parent metal

Application

Welding and hardfacing of parts made from ASTM 4140 steels
Rolled plate steel
Foundries

Remarks

Weldments should be preheated at 204-316�C with the same temperature held at interpass in order to prevent cracking

Technical Data

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

C	Si	Mn	Cr	P	S	Mo
0.35	0.40	0.86	0.85	0.012	0.014	0.35

HARDNESS OF WELD METAL:

Hardness	Vickers (Hv)	Rockwell (H_RC)
As Welded	270 - 300	27 - 30

SIZE AND RECOMMENDED CURRENT RANGE: AC, DC (+)

DIAMETER (mm)	2.6	3.2	4.0	5.0
LENGTH (mm)	350	350	350	350
Current Amp	55 - 85	90 - 120	120 - 170	170 - 220

Welding Positions:	FLAT, OVERHEAD, VERTICAL
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.