NHF-HSS690

Specification

AWS Specification: AWS A5.13 EFe5-B
JIS Specification: N/A
Other Specification: DIN 8555: E4-UM-60-ST

Description

NHF-HSS690 exhibits a weld metal that contains high molybdenum content
Weld metal withstands stressing by abrasions, impact compression, and temperatures up to 550ºC
Excellent slag removal
Suitable for the production of all kinds of cutting tools, such as lathe and plane tools, large drills, countersinks, and hot work tools

Application

Manufacturing and reconditioning tools
Surfacing with high wear resistance on machines and tools

Remarks

Bigger workpieces must be preheated to 400-600�C and kept at this temperature during welding

Lower preheat temperature is enough for smaller work because it is heated adequately by the arc

Certain jobs on smaller workpieces may even be welded without preheating

Slowly cool in an oven or under asbestos after welding

Weld can be machined only by grinding after it cools

If other cutting operations have to be performed on a build-up weld, annealing is necessary

Technical Data

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

C	Si	Mn	Cr	Mo	W	V
0.90	0.81	0.52	4.60	8.10	2.00	1.20

HARDNESS OF WELD METAL:

Hardness	Vickers (Hv)	Rockwell (H_RC)
After Welding	720 - 780	61 - 63
Soft Annealed	260	25
Hardened	840 - 890	64 - 66

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

DIAMETER (mm)	3.2	4.0	5.0
LENGTH (mm)	350	350	350
Current Amp	90 - 130	120 - 180	170 - 230

Welding Positions:	FLAT, FILLET, VERTICAL UP
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.