isoarc consumables    This email address is being protected from spambots. You need JavaScript enabled to view it.     gouging carbons 1

ISOARC gouging carbons are designed specifically for the air carbon arc metal removal process, which melts metal with an electric arc, then blows it away with a jet of ordinary shop compressed air. ISOARC carbons contain a precisely formulated blend of carbon and graphite that produces the most efficient metal removal performance. They offer excellent arc stability,  superior metal removal rates, uniform diameter and clean slag – free grooves or cuts.

Available in a number of types and sizes, ISOARC carbons are ideal for a broad range of applications, such as creating Ugrooves  for weld joint preparations, removing old welds, gouging out cracks, cleaning and repairing castings, removing hard
surface metal, and for rough machining.

They gouge, cut, bevel, pierce or flush off any metal including stainless steel, carbon steel, manganese steel, chrome-moly  alloys, gray, malable and ductile iron, copper, aluminium, magnesium and nickel alloys – fast precisely and economically.
ISOARC carbons are made for use in any type of gouging torches connected to a D.C. power supply and compressed air  source. The amperage required depends on the electrode diameter; an electrode is usually selected to make grooves or cuts
slightly larger than its diameter. 


  • Excellent Arc Stability
  • Superior Metal Removal Rate
  • Uniform Diameter
  • Clean Machinelike Grooves or cuts
  • Greater overall Economy


  • Machining U – Grooves for weld joint preparation
  • Removing defective welds 
  • Cleaning and repairing metal castings
  • Removing hard surface metal to facilitate repair
  • Cutting non ferrous and other “hard to cut” metals
  • Rough machining


Construction – Foundries – Metal Fabrication – Transportation Equipment - Machining and Machine Tools – Ship Building – General Maintenance

To employ the process you need:

  • A D. C. Power Source
  • A Gouging Torch
  • “ISOARC” Gouging Carbons
  • Compressed air (5.6 to 7 kg/cm²) 

Process Description

The Air Carbon Arc process involves:

  • The striking of an arc between the metal work piece and a gouging electrode
  • The melting of metal through use of the arc, and
  • Removal of the molten metal with compressed air that flows parallel to the electrode (air and current flow to the torch
    through a special coaxial hose)

Technical Information

Electro Size and cutting performance

Width of Groove Rod diam x 1.4mm 
Depth of Groove Rod diam x 0.7mm

Carbon Electrode STATRC Performance Standard

Electrical Resistance 19 µ Ω . m
Breaking Strength 27 Mpa
Bulk Density 1.57 g/cm3
Ash Content 0.8%
Water Content 0.3%

Current Selection by electrode size

Carbon size in dia. (mm) 6 7 8 9 10 13 16 19
Minimum - Amps 300 350 400 450 500 800 1000 1200
Maximum  - Amps 350 400 450 500 600 1000 1200 1600
Air - psi 80 80 80 80 80 100 100 100
Air - kg / cm² 5.6 5.6 5.6 5.6 5.6 7.0 7.0 7.0

Material Removed Per Electrode

Electrode size in dia. (mm) 6 8 10 12
GMS / Electrode 350 600 950 1400
* Effective length of electrode 300 mm

Current Selection Guide Chart

Current Indication
Current Copper layer on electrode burns back approx . 20mm max
Too Low Slow cutting and splittering arc.
Too High Over - rapid burning of copper layer on electrode

Gouging Torch
S - 15

For gouging, cutting, bevelling, piercing and flushing metal, a Gouging Torch removes most kinds of metal.

The “Air-Carbon-Arc” gouging process is more economical than burning,  chipping, grinding etc. This method cuts or gouges metal by melting base  metal with an electric arc and blowing away molten metal with high velocity  compressed air. Since this is a physical (not chemical) process, our gouging torches can be used on most metals with minimal deformation because of their low heat input.

The S-15 Torch is designed for general purpose gouging applications. The S-15 torch is used by:

  • Fabricators, tanks shops, shipyards, heavy industrial plants, construction firms, quarries and mines
  • For plate edge preparation, back-gouging welds, removal of old or defective welds
  • Ideal for repair and general maintenance of equipment

All torches will accommodate round and flat electrodes. By using flat electrodes, the following are some applications:

  • Selective scarfing of carbon and low alloy steel billets
  • Removing surface cracks from dies providing a smooth base for the new deposit
  • Removing hard facing
Part No.Torch ModelMax. AmpElectrode Size
40003S-15 7" 360° swivel cable10005/32" THRU 1/2", 3/8 & 5/8 FLAT

Gouging Foundry Torch
S - 66

This triple action torch is engineered for heavy foundry  applications. The heavy-duty body accommodates heads  that removes defects and wash pads with ease and performs general purpose cleaning.
The S-66 can be equipped with a standard 7” air-cooled  cable, a 7” extra heavy duty cable (EHD) or a 7” water-cooled cable. An optional 10” cable (air-cooled or water-cooled) is available. The water-cooled cable is non-swivel –
minimizing over-heating during heavy gouging applications.
The 340° swivel cable supplies both power and air to the triple action torch. It prevents  cable twisting, minimizing cable damage.

Part No Torch Model Max. Amp. Electrode Size
30036 S-66 Less Cable W/Terminator Head 1500 3/8" THRU 3/4"
30046 S-66 Less Cable W/Terminator Head 1000 3/8, 1/2", 5/8"
40036 S-66 W/7" 340° Cable W.Terminator Head 1500 3/8" THRU 3/4"
40046 S-66 W/7" 340° Cable W.Terminator Head 1000 3/8, 1/2", 5/8"


This innovative design, introduced in 1995 after extensive research, give the welder/operator many advantages including:

  • Deeper gouge
  • Cleaner groove for less slag removal
  • Concentrated air where it counts 

The terminator head fits the S-15 and S-66 gouging torches. We also offer the conventional 2-hole head and 3-hole head.