NHF-300B

Specification

AWS Specification: N/A
JIS Specification: DF2A-350-R
Other Specification: N/A

Description

NHF-300B is a titania type electrode that has stable hardness and good usability
Weld metal features sorbite structure and has remarkable toughness
Suitable for intermetallic abrasion and moderate impact abrasion

Application

Hardsurfacing of various wheels, shafts, and gears

Remarks

Preheating is not necessary

In the case of hard surfacing on large size weldments, low alloy steel and high carbon steel, preheat at 150�C and over

The groove repairing is prone to slag inclusion, so adjust the holding angle of the electrode

Machining and quenching is possible

Technical Data

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

C	Si	Mn	Cr	M
0.07	0.25	0.18	0.70	1.02

HARDNESS OF WELD METAL:

Hardness	Vickers (Hv)	Rockwell (H_RC)
First Layer	255 - 285	25 - 30

SIZE AND RECOMMENDED CURRENT RANGE: DC (+)

DIAMETER (mm)	3.2	4.0	5.0
LENGTH (mm)	350	350	350
Current Amp	100 - 150	140 - 200	170 - 250

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.