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Stainless Steel Welding Electrodes
234 - Isoarc 234

Characteristics
Isoarc 234 is a rutile flux coated electrode which deposits a 25%Cr, 9%Ni, 12%N duplex stainless steel weld metal having a ferrite content of about FN30.

Applications
Isoarc 234 is designed for welding similar composition duplex stainless steels which offer an excellent combination of high strength and very good resistance to stress corrosion cracking in the presence of nitric acid

Procedures
Avoid excessive amperage, and use AC or DC straight polarity. When welding ASTM S43304 austenitic welding procedures should be used. Allow the material to cool to below 150°C between passes. To ensure good penetration of the weld tack with a wider than normal gap.

Redrying
Should electrodes become moist rebake at 300°C for 1 hour.

Classifications
AWS Proprietary
PRODUCT ISOARC 234
 
Mechanical Properties
TENSILE >960 N/mm²
YIELD >640 N/mm²
BRINELL approx 260
IMPACTVALUE -46°C 25J
ELONGATION >22%
Chemical Analysis
Carbon 0.02
Manganese 0.7
Silicone 0.8
Chromium 24.0-25.0
Nickel 9.0
Nitrogen 0.11

Welding Position

Diameter Length Current Pack Mass Item No
2.5 350mm 60-80A 5kg EL21125
3.2 350mm 80-120A 5kg EL21132
4.0 350mm 130-170A 5kg EL21140
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Stainless Steel Welding Electrodes
E410-16 - Isoarc 410

Descriptions
Isoarc 410 is an AC-DC titania coated electrode.

Applications
For welding or repairing alloy hardenable stainless steels like types 410, 416, 420, 431, and cast C15. Overlay of carbon and low alloy steels for resistance to corrosion, erosion, or abrasion. Isoarc 410 has higher hardness and is used in valve seats to obtain better galling resistance.

Classifications
AWS 5.4 E410-16
PRODUCT ISOARC 410
 
Mechanical Properties
TENSILE 555MPa
YIELD 306MPa
ELONGATION 24%
Chemical Analysis
Carbon 0.09
Manganese 0.55
Phosphorous 0.020
Silicone 0.30
Sulphur 0.010
Chromium 12.3
Molybdenum 0.25
Nickel 0.45
Copper 0.10

Welding Position

Diameter Length Current Pack Mass Item No
3.2 350mm 85-125A 5kg EL41032
4.0 350mm 110-160A 5kg EL41040
5.0 350mm 120-200A 5kg EL41050
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E308L-16

Characteristics
ISOARC 308L permits welding at the lowest possible amperage in flat, vertical, horizontal or
overhead positions Deposition is fast and smooth with low spatter and good slag detach-ability.

Applications
Use for joining or cladding of 18-8 chrome nickel stainless steel requiring similar deposit
as the base metal. Ideal for steel types 301, 302, 304, 305, 308, 321, 347.

Procedures
To avoid heat accumulation, keep a short arc and use low amperage with stringer bead technique.
Remove the slag after each pass. On DC equipment use positive polarity. On long seams, tack at 
short intervals to reduce distortion

Redrying
Should electrodes become moist re-dry at 350°C for 1 hour

Classifications
AWS SFA A5.4 : E308-16/E308L-16
DIN E 19 9 n C R 26
ISO E 19.9 LR 26
 
Mechanical Properties
TENSILE > 620 N/mm²
YIELD > 390N/mm²
ELONGATION > 35%
Typical Chemical Analysis
Carbon 0.02
Manganese 1.2
Silicone 0.80
Chromium 19.50
Molybdenum 0.1
Nickel 10.00
Copper 0.1

Positions

Diameter Length Current Pack Mass Item No
2.5 350mm 40 - 80A 5kg El30425
3.2 350mm 60 - 100A 5kg El30432
4.0 350mm 90 - 140A 5kg El30440
5.0 350mm 130 - 180A 5kg El30450
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Stainless Steel Welding Electrodes
E309L Mo 16 - 309 MOL

Characteristics
ISOARC 309 MOL features low-spatter loss and excellent slag removal. The work surface is smooth and finish free of undercut. The electrode is free from porosity.

Applications
This is a molybdenum-alloyed electrode of the 309LMo type, which is primarily designed for joining or cladding Stainless Steels of similar and dissimilar compositions. Also for joining and cladding non-alloy or low-alloy steel to obtain corrosion or heat resistance. Use on steel types 304-308L, 3Cr12, 309L, 321, 347, 316L, 318.When used for surfacing, the composition obtained is more or less equal to that of astm 316 from the very first run.

Procedures
To avoid heat accumulation, use low amperage with stringer bead technique. Hold a short arc and remove slag after each pass. On DC equipment use positive polarity.

Redrying
Should electrodes become moist re-dry at 350°C for 1 hour

Classifications
AWS E309L Mo 16
PRODUCT 309 MOL
DIN E 23 12820
ISO E 23 12 LB 20
 
Mechanical Properties
TENSILE > 600 N/mm²
YIELD > 490N/mm²
ELONGATION > 35 - 40%
Chemical Analysis
Carbon 0.02
Manganese 1.20
Chromium 23.00
Molybdenum 2.0-3.0
Nickel 13.50

Welding Position

Diameter Length Current Pack Mass Item No
2.5 350mm 50 - 80A 5kg El30925
3.2 350mm 90 - 125A 5kg El30932
4.0 350mm 110 - 170A 5kg El30940
5.0 350mm 140 - 200A 5kg El30950
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Stainless Steel Welding Electrodes
E312-16 - Isoarc 168

Characteristics
This highly versatile electrode is extensively used by the maintenance repair man. The high-alloy content, strength and elongation capabilities allow it to solve various problem steel joining applications. The specially formulated coating permits smooth, porosity free, dense deposits free from spatter. Undercutting is eliminated due to ease of welding and control of the arc. Deposit will take high polish.

Applications
ISOARC 168 is used extensively on repairs to shafts, pinions, springs, tools and dies, gear-teeth, machine parts, earthmoving equipment, agitator blades, pressure vessels and all welds requiring high stress loading capabilities.

Procedures
To avoid the accumulation of heat, use low amperage with stringer bead technique and a short arc. Intermittent welding can be used especially on high alloy steels. On tool steels, preheat to approximately 200 degrees. Light peening of welds will increase the tensile strength.

Redrying
Should electrodes become moist re-dry at 350°C for 1 hour

Classifications
AWS E312-16
PRODUCT ISOARC 168
DIN E 29 9 R 22
 
Mechanical Properties
TENSILE > 750 - 850 Mpa
YIELD > 450 N/mm²
HARDNESS +- 200 to 240 BHN
ELONGATION > 22%
Chemical Analysis
Carbon 0.09
Manganese 2.50
Phosphorous max 0.04
Silicone max 1.0
Sulphur max0.03
Chromium 30.00
Molybdenum max 0.75
Nickel 10.00

Welding Position

Diameter Length Current Pack Mass Item No
2.5 350mm 50 - 80A 6kg EL12925
3.2 350mm 70 - 120A 6kg EL12932
4.0 350mm 120 - 160A 6kg EL12940
5.0 350mm 180 - 200A 6kg EL12950
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