SHIELD METAL ARC WELDING (SMAW)

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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
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 (HRC)

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.

  • Manufacturing and reconditioning tools
  • Surfacing with high wear resistance on machines and tools
  • Bigger workpieces must be preheated to 400-600ºC 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

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