NHF-800

Specification

AWS Specification: N/A
JIS Specification: DIN E6-60
Other Specification: N/A

Description

NHF-800 deposits a martensitic structure that contains C, Cr, and B as prinicipal alloy elements
Extremely high hardness caused by precipitation of chrome carbide and chrome boride
Suitable for overlaying of parts subject to heavy soil abrasion

Application

Pump casings
Cutter knives
Soil abrasion equipment

Remarks

Preheat over 200�C and postheat at 500-600�C

Crack tendency increases when used for over triple layer welding

Underlaying with low hydrogen type electrodes (N-7016 or N-7018) is required

Dry the electrodes at 150-200�C for 30-60 minutes before use

Technical Data

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

C	Si	Mn	Cr	B	W
0.91	1.88	1.32	3.87	0.52	2.54

HARDNESS OF WELD METAL:

Hardness	Vickers (Hv)	Rockwell (H_RC)
Value	740 - 800	62 - 64

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

DIAMETER (mm)	3.2	4.0	5.0	6.0
LENGTH (mm)	350	400	400	450
Current Amp	90 - 130	120 - 180	170 - 230	210 - 280

Welding Positions:	FLAT, OVERHEAD, HORIZONTAL
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.