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NSW-308L
AWS Specification: ER-308L
JIS Specification:

NONE

Other Specification:

FOR STAINLESS STEEL

I. APPLICATIONS:

Fabrication of stainless steel structures and assemblies such as plate, pipework, vessels, tanks, forgings and castings in the chemical, petrochemical, power and pharmaceutical industries, food, drink and paper processing plant.

Highly recommended for general repair work and fabrication of stainless steel equipment such as containers, tanks, vats, and other equipment used in the dairy, chemical and food industries. Also ideal as protective overlay on steel where medium hardness and complete corrosion resistance is required

Product

Grade

Plate

 

 

Forgings

Castings

 

Pipe

AISI stainless steels

ASTM pipe

ASTM castings

BS 970 : Pt.1 : 1991 302S31, 304S11, 304S15, 304S31

BS 1449 : Pt.2 : 1983 304S11, 304S15, 304S16, 304S31

BS 1501 : Pt.3 :1990 304S11, 304S31

BS 1503 : 1989 304S11, 304S31, 304S51

BS 1504 : 1976 304C12, 304C15

BS 3100 : 1991 304C12, 304C15

BS 3605 : Pt.1 :1991 304S11, 304S31

201, 202, 301, 302, 304, 304L

A312 Grades TP308, TP308L

A351, Grades CF-3, CF-3A

II. DESCRIPTION:

A general purpose stainless steel Shielded Metal Arc Welding electrode for welding 18/8 austenitic stainless steels. NSW-308L-16 deposits a low carbon 18% Cr-8% Ni weld metal to provide good corrosion resistance properties to intergranular attack from a range of liquid chemical media at service temperatures up to 300ºC. Welds with a smooth even metal transfer and stable arc, and is practically spatter free. Finely-ripped bead and self-peeling slag. Easy welding in all positions. The striking and restriking of the electrode is remarkably easy. A self releasing slag and the risk of porosity in the weld is minimal provided the electrode is dry. The finished welds exhibit a slightly concave shape with good cosmetic appearance which requires little or no post weld dressing. The electrode is ideal for both fillet and butt welding applications. The smaller sizes including 3.25mm are suitable for positional welding while the bigger sizes are for flat only.

III. NOTES ON USAGE:

Prepare and fit the work carefully, cleaning the joints of all foreign material. Use AC (minimum OCV of 70V) or DC+ current. Proceed with the lowest current possible and short arc without allowing coating to touch molten pool. Short and intermittent welding is to be preferred to avoid overheating and distortion. Avoid excessive weaving. Electrodes should be coated. Discard exposed core wire by striking or scratch welding in a scrap plate until exposed core wire is consumed. Use dry electrodes to prevent blowholes in deposit. If necessary re-dry at 200ºC for 2 hours before use.

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

C

Mn

Si

P

S

Cr

Ni

0.02

1.85

0.4

0.023

0.011

19.59

10.35

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

Tensile Strength

N/mm2 (Ksi)

Elongation

%

567 (82)

47

VI. WELDING POSITIONS: ALL POSITION-EXCEPT VERTICAL DOWN

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

Size

(mm)

Dia.

1.6

2.0

2.5

3.2

4.0

5.0

Length

250

250

300

350

350

350

Current Range

10-30

15-50

40-80

60-90

90-150

110-180

 

10-30

15-50

40-80

60-90

90-150

100-170

APPROVAL:ABS

 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.