nihonweldnihonweldnihonweld

Printer Friendly Layout
NIHONWELD N-8016-B8
AWS Specification: E8016-B8
JIS Specification:

NONE

Other Specification:

I. APPLICATIONS:

Welding of 9% Cr-1% Mo steels and 9% Cr – 2% Mo steels used for electric power and high pressure vessel.

II. DESCRIPTIONS:

N-8016-B8 is a low hydrogen electrode whose weld metal consists of 9%Cr-1%Mo. It is designed for high temperature steel and steels for hot hydrogen services, particularly in petrochemical industry. The electrode can be approved for its high tensile strength, good toughness and great heat resistance.

III. NOTES ON USAGE:

  • Dry the electrodes at 350-400°C for about one hour before use and store the electrodes at 100-150°C after drying them with attention to keep away from moisture.

  • 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

  • Preheat at 100-150°C. The temperature to be applied varies in accordance with plate thickness and kind of steel to be welded.

  • Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration of impact values and yield strength of weld metal.

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

 

C

Si

Mn

Cr

Mo

0.06

0.42

0.68

9.38

1.05

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

 

Tensile Strength N/mm2 (Ksi)

Yield Point N/mm2

(Ksi)

Elongation %

PWHT

705 (102)

560 (81)

24

740°C x 1 hr

VI. WELDING POSITIONS: ALL POSITIONS

VII. SIZE AND RECOMMENDED CURRENT RANGE (AC/DC+):

 

Diameter (mm)

 

2.5

3.2

4.0

5.0

Length (mm)

 

350

350

400

400

Ampere

Flat

55 - 85

90 - 130

130 - 180

180 - 240

V & OH

50 - 80

80 - 115

110 - 170

150 - 200

 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.