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NIHONWELD N-505
AWS Specification: E505-16
JIS Specification:

NONE

Other Specification:

DIN ECrMo9B26

I. APPLICATIONS:

Welding of 9% Cr-1% Mo steel used for super-heater tubes of high temperature and high pressure boiler, heater tube for all refining industries.

     II. DESCRIPTION:

N-505 is a low hydrogen type electrode for all-position welding, which provides the weld metal of 9% Cr-Mo.

     III. NOTES ON USAGE:

  • Dry the electrodes at 325-375°C for about one hour before use.

  • Preheat at 250-350°C and post heat at 720-780°C.

  • Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.

  • Keep the arc as short as possible.

IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):

 

C

Si

Mn

Cr

Mo

0.07

0.33

0.48

9.51

1.14

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

 

Yield Point

N/mm2 (ksi)

Tensile Strength

N/mm2 (ksi)

Elongation

%

PWHT

500 (73)

670 (97)

26

740°C x 1 hr

VI. WELDING POSITIONS: ALL POSITIONS

VII. SIZES AVAILABLE AND RECOMMENDED CURRENTS: AC or DC (+)

 

Size

(mm)

Dia.

2.5

3.2

4.0

5.0

Length

350

350

400

400

 

Current

Flat

55-85

75~115

80~160

160~220

V & OH

50-80

70-110

90-150

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 TEST RESULT

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.