WELDFAST SERIES
LOW HYDROGEN ELECTRODES
 
WELDFAST LH 16 WELDFAST LH 18 (NACE)  
WELDFAST LH 18 WELDFAST LH 28  
WELDFAST LH 18 - 1      
 
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST LH 16
AWS A/SFA - 5.1 E 7016
IS 814 EB 5426H3X
DIN 1913 E 5144B1026
RDSO CLASS A3/B1
A medium coated, all position, basic type hydrogen controlled electrode for welding Mild Steel, Medium & High Tensile Low Alloy steels, for depositing buffer layer before hard facing and for joining cast steel to mild steel. The weld deposit is of excellent X-ray quality. The electrode produces stable & smooth arc, smooth uniform weld deposit and is easy in slag removal. Re-drying temperature 300°C for 1 hr.
C : 0.10 max
Mn : 1.60 max
Si : 0.75 (max)
S : 0.03 max
P : 0.03 max
UTS : 550-610 N/mm2
2 YS : 430-540 N/mm2
Elongation : 24-28%
CVN Impact at -30°C : 50-60 J
Current : AC/DC+
Suitable for cast steels, difficult steels of unknown composition and for non machinable deposits on
cast iron. Typical applications include coaches, ships, heavy duty structures, earth moving machinery, rotary kiln shells, boilers and pressure vessels. Used as Buffer layer before depositing hard facing
electrodes.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST LH 18
AWS A/SFA - 5.1 E 7018
IS 814 EB5426H3JX
DIN 1913 / E5144B1026
RDSO CLASS A4/B2

A basic coated low hydrogen all position welding electrode with metal recovery of 110% approximately. The weld deposit has good toughness and excellent X- ray quality. It gives excellent arc stability, smooth arc and is very easy in slag removal.
Re-drying temperature 300°C for 1 hr.

Approvals : NPCIL, BHEL Trichy, LRS 3YH5, ABS 3YH5, DNV 3YH5, IRS 3YH5,BV, BIS, CIB (Maharashtra), Thermax, Toyo Engg., M.N.Dastur & Co., Uhde India, TATA Projects Ltd.

C : 0.10 max
Mn : 1.60 max
Si : 0.75 max
S : 0.03 max
P : 0.03 max
UTS : 550-610 N/mm2
2 YS : 430-540 N/mm2
Elongation : 24-28%
CVN Impact at -30°C : 50-60 J
Current : AC/DC+
Boiler and pressure vessels, penstocks,storage tanks,bridges, heavy structures subjected to dynamic loading and under restrained conditions.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST LH 18 - 1
AWS A/SFA - 5.1 E 7018-1
IS 814 EB 5526H3JX
DIN 1913 E 5155B1029
LRS 4Y40H5
DNV 4Y40H5
BV 4Y40TT5

A basic coated low hydrogen all position welding electrode with
deposition efficiency of approx. 110%. The weld metal has excellent toughness even at -50 C and satisfies X-ray, ultrasonic and radiographic
requirements. Electrode gives smooth and stable arc, easy slag removal and is suitable for welding of pipes in 1G, 2G, 5G & 6G positions. Re-drying temperature 300°C for 1 hr.

Approvals::NPCIL, Uhde India, CIDCO.

C : 0.10 max
Mn : 1.40 max
Si : 0.60 max
S : 0.015 max
P : 0.018 max
UTS : 550-610 N/mm2
2 YS : 440-530N/mm2
Elongation : 24-28%
CVN Impact at -45°C : 55-65J
Current : AC/DC+
Welding of pressure vessels & boilers, pipelines, power plants, penstocks, earth moving equipments, bridges, low alloy steels and heavy thick plates ofcarbon steel. Suitable for steels confirming to ASTM specification : Gr. 60, Gr. 65 steels of SA-515/SA-515(P. No. 1) and Gr. 60, Gr. 65 steels of SA-516/SA-516M (P.No.1).
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST LH 18 (NACE)
AWS A/SFA - 5.1 E 7018-1
IS 814 EB 5629H3JX
DIN 1913 E 5155B1029

A basic coated extra- low- hydrogen all position welding electrode with deposition efficiency of approx. 110%. The weld metal has excellent toughness even at –50 C and satisfies X-ray, ultrasonic and radiographic requirements. Electrode gives smooth and stable arc, with easy slag removal even from first pass in a vee groove. The weld metal which contain
about 1.2 % Mn, is extremely resistant to cold and hot cracking and tri-axial stressing.
Re-drying temperature 300 c for 1 hr.

C : 0.10 max
Mn : 1.60 max
Si : 0.75 max
S : 0.03 max
P : 0.03 max
UTS : 520-600 N/mm2
2 YS : 430-530N/mm2
Elongation : 24-28%
CVN Impact at -46°C : 40 J
Current : AC(70 OCV)/DC+
Welding of medium high tensile steels, heavy sections and restrained joints in high tensile steel.
Welding of carbon steel and low alloy steel fabrications where severe service conditions exist. It meets corrosion test as per NACE Standard TM- 01-
77 and TM-02-84. Suitable for joining steels like
ASTM 106Gr.B (NACE quality), Gr60, Gr65 of SA-
515/SA-515M.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST LH 28
AWS A/SFA - 5.1 E 7028
IS 814 EB 5336H2LX

An iron powder basic coated low hydrogen electrode with metal recovery of approximately 150%. It is ideal for rapid filling of beveled butt joints in heavy plates in down hand position. Easy slag removal and weld deposit is of radiographic quality. Re-drying temperature is 300°C for 1 hr.

C : 0.10 max
Mn : 0.80-1.20
Si : 0.80 max
S : 0.03 max
P : 0.03 max
UTS : 550-610 N/mm2
2 YS : 420-500 N/mm2
Elongation : 24-28%
CVN Impact at -20°C : 60 -70J
Current : AC/DC+
Heavy structures like cranes, bridge girders, earth
moving equipments, heavy machinery parts, ships and pressure vessels etc.
 
 
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