Low Hydrogen Iron powder type radiographic quality Electrode
CLASSIFICATION
AWS - A5.1: E7016
Characteristics: NOBLE - 7016 is a medium-heavy coated, basic, low hydrogen type electrode for the welding of mild-steel, medium-high tensile and low-alloy steel. It gives sound radiographic quality welds having excellent mechanical properties. It also gives good penetration and its slag is easily detachable and provides smooth bead finish.
Applications: NOBLE - 7016 is suitable for the welding of mild steel, medium-high tensile steels. It is also used for joining cast steel to mild steel and as buffer layer before hard facing of the surface. Its other applications are boilers, pressure vessels, shipping, oil tanks railways etc.
Mechanical Properties
Mechanical Tests
AWS Specifications
Yield strength
400 N/mm2 (Min.)
Tensile Strength
490 N/mm2 (Min.)
Elongation
22 % (Min.)
Impact (CVN) at -30° C
27 J (Min.)
If Moist: Re-dry at 250° C For 2 Hrs.
Weld Metal Chemistry (%)
Elements
C
Mn
Si
P
S
Ni
Cr
Mo
V
Range
0.10 Max
1.60 Max
0.75 Max
0.035 Max
0.035 Max
0.30 Max
0.20 Max
0.30 Max
0.08 Max
Packing Specifications
Size (mm)
Pkts./Case
Pcs/Pkt.
Current (Amp.) AC (70V), DC (+)
2.00 x 350
04
200
70 - 100
3.15 x 350
04
125
100 - 140
3.15 x 450
04
125
100- 140
4.00 x 450
04
70
140 - 180
5.00 x 450
04
55
170 - 240
NOBLE - 7018
Low Hydrogen Iron powder type Radiographic Quality Electrode
CLASSIFICATION
IRS - 3Y40HH
AWS - A5.1: E7018
IS - 814: EB5426H3JX
Characteristics: NOBLE - 7018 is a heavy coated iron powder type electrode gives a smooth arc, good penetration and very less spatters. It is easy to operate in all position except vertical downward for radiographic quality welds. It produces uniform and finely rippled welds of superior finish. The weld metal is extremely ductile and crack resistant. The Effective electrode efficiency is more than 110%. The electrode operates on AC (70 V OCV) as well as DC (+) power.
Applications: NOBLE - 7018 is suitable for the welding of high tensile steels such as blast furnace steel work, pressure vessels, storage tanks, wagon building, pipe lines, furnace shells, bridges, ship hulls, root runs in heavy joints etc.
Mechanical Properties
Mechanical Tests
AWS Specifications
Yield strength
400 N/mm2 (Min.)
Tensile Strength
510 - 610 N/mm2
Elongation
25 % (Min.)
Impact (CVN) at -20° C
47 J (Min.)
Impact (CVN) at -30° C
27 J (Min.)
If Moist: Re-dry at 250° C For 2 Hr.
Weld Metal Chemistry (%)
Elements
C
Mn
Si
P
S
Ni
Cr
Mo
V
Range
0.10 Max
1.60 Max
0.75 Max
0.035 Max
0.035 Max
0.30 Max
0.20 Max
0.30 Max
0.08 Max
Packing Specifications
Size (mm)
Pkts./Case
Pcs/Pkt.
Current (Amp.) AC (70V), DC (+)
2.50 x 350
04
200
70 - 100
2.50 x 350
05
4 kg.
70 - 100
3.15 x 350
04
125
100-140
3.15 x 350
05
4 kg
100 - 140
3.15 x 450
04
125
100 - 140
4.00 x 350
05
4 kg.
140 - 180
4.00 x 450
04
70
140 - 180
4.00 x 450
04
5 kg.
140 - 200
5.00 x 450
04
55
170 - 240
5.00 x 450
04
5 kg.
170 - 240
NOBLE - 8018-B2
Mild Steel General Purpose Electrode
CLASSIFICATION
AWS - A5.5: E8018-B2
Characteristics: NOBLE - 8018-B2 is hydrogen controlled, heavy coated iron powder type electrode. It is Suitable for radiographic quality welding of creep resisting and low alloy heat treatable steel. The weld metal deposit is of approximate 1.2% Cr & 0.5% Mo with excellent creep resistance at service temperature up to 550° C. Higher metal recovery gives excellent mechanical properties.
Applications: NOBLE - 8018-B2 can be used in all position except vertical downward and for the welding of micro alloyed (Cr-Mo) steel used for super heater pipings in oil refinery, boiler & power house construction, railway class IV steels and part of earth moving equipments.
