UTP Special Alloy Products

UTP Maintenance special alloys are designed for demanding welding applications involving extreme temperatures, corrosion, chemical attack, dissimilar metal transitions, and crack-sensitive base materials.  

The products below are grouped by application to simplify selection for mining, mineral processing, and heavy industrial maintenance.

NICKEL-BASED ALLOYS (GENERAL PURPOSE)

For dissimilar joints, buffer layers, and crack-sensitive materials exposed to heat or mixed service conditions.

UTP 068 HH - Heat-Resistant NiCrFe Stick Electrode

Description: UTP 068 HH is a high-performance basic-coated NiCrFe stick electrode is engineered for repairing and joining heat-resistant Ni-base alloys, austenitic steels, cold-tough Ni-steels, and austenitic-ferritic joints or claddings. Its high nickel content ensures a stable arc, minimal spatter, and smooth seams for reliable, high-integrity welds under thermal stress.

Classification: EN ISO 14172 E Ni 6082 (NiCr20Mn3Nb); AWS A5.11 E NiCrFe-3 (mod.); Material-No. 2.4648.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards.

Benefits: Superior hot cracking and embrittlement resistance for long-term structural integrity; excellent scale resistance in high-heat, low-sulphur conditions; robust mechanical properties, including yield (Rp0.2 >350 MPa), tensile (Rm >600 MPa).

Applications: Repairing high-carbon CrNi cast steels in petrochemical installations, joining 25/35 CrNi cast to 1.4859 or 1.4876 materials, and surfacing mining components exposed to aggressive gases and elevated temperatures.

Hardness: Not specified.

Technical Data Sheet | Safety Data Sheet - Contact Us for more details

UTP 6222 Mo (NEW) - Corrosion-Resistant NiCrMo Stick Electrode

Description: Crafted for precision in challenging conditions, this basic-coated NiCrMo stick electrode excels in joining, repairing, and surfacing nickel alloys, austenitic steels, low-temperature nickel steels, and austenitic-ferritic joints or claddings. Its high nickel content ensures outstanding pitting and stress-corrosion resistance, with stable arcs, easy slag removal, and high creep strength, making it ideal for scale-resistant performance up to 1100°C in low-sulphur atmospheres and for maintaining ductility after prolonged exposure at 600–800 °C.

Classification: EN ISO 14172 E Ni 6625 (NiCr22Mo9Nb); AWS A5.11 E NiCrMo-3; Material-No. 2.4621

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards. GTAW UTP A 6222 Mo, GMAW UTP A 6222 Mo, FCAW UTP AF 6222 Mo PW.

Benefits: Impressive mechanical strength with yield (Rp0.2 >450 MPa), tensile (Rm >760 MPa), elongation (A >30%), and impact (KV >75 J); superior resistance to pitting, stress corrosion, and hot cracking; reliable in oxidizing and carburizing atmospheres with minimal ductility loss.

Applications: Repairing heat-resistant NiCrFe alloys in mining furnaces, cryogenic Ni-steels in processing plants, and austenitic-ferritic claddings in chemical facilities operating up to 900°C.

Hardness: 170-210 HB (as-welded)

Technical Data Sheet | Safety Data Sheet

UTP 7015 - Versatile NiCrFe Stick Electrode

Description: Built for versatility, this basic-coated NiCrFe stick electrode is for repairing and surfacing nickel-base materials, while expertly handling dissimilar welds like austenitic to ferritic steels or claddings on low-alloy steels in reactor construction. It features a stable arc, excellent slag removability, and finely rippled seams, with a fully austenitic structure that prevents embrittlement across temperature ranges, allowing flexible preheating and post-weld treatments for seamless integration in industrial repairs.

Classifications: EN ISO 14172 E Ni 6182 (NiCr15Fe6Mn); AWS A5.11 E NiCrFe-3; Material-No. 2.4807.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards. GTAW UTP A 7015, GMAW UTP A 7015.

Benefits: High-temperature resistance without embrittlement; versatile for dissimilar joins with excellent weldability in all positions except vertical down; delivers notch-free seams and robust structural integrity.

Applications: Repairing nickel-base materials in chemical equipment, cladding low-alloy steels in nuclear reactors, and joining austenitic-ferritic combinations in mining machinery.

Hardness: 170 HB (as-welded)

Technical Data Sheet | Safety Data Sheet

UTP A 80 M - Corrosion-Resistant NiCu TIG Rod/Solid Wire

Description: Precision-engineered for demanding repairs, this NiCu TIG rod and solid wire is ideal for joining and surfacing nickel-copper alloys and clad steels, including 2.4360 (NiCu30Fe) and 2.4375 (NiCu30Al), as well as dissimilar joins between steel and copper or Ni-Cu alloys. It offers unparalleled corrosion resistance in media from water, non-oxidizing mineral acids, alkalis, and salt solutions, ensuring durability in chemical, petrochemical, and marine applications.

Classifications: EN ISO 18274 S Ni 4060 (NiCu30Mn3Ti); AWS A5.14 ER NiCu-7; Material-No. 2.4377.

Format: TIG rod and solid wire (e.g., 1.6-2.4 mm) - compliant with Canadian CSA standards. Covered electrode version available as UTP 80 M.

Benefits: Superior corrosion resistance across a wide range of aggressive media; excellent mechanical properties for durable, high-integrity welds; ideal for clad steel applications with minimal dilution.

Applications: Repairing nickel-copper alloys in chemical plants, surfacing clad steels in petrochemical facilities, and joining in seawater desalination or marine equipment for mining operations.

Hardness: Not specified

Technical Data Sheet | Safety Data Sheet

Additional Suggestions: UTP A 6222 Mo, UTP A 759 – contact us for details.

COBALT & HIGH-TEMPERATURE ALLOYS

For components exposed to elevated temperatures, oxidation, and creep—such as furnace parts, burners, and hot-gas equipment.

UTP 6170 Co - High-Temperature CoCrMoNi Stick Electrode

Description: A specialized basic-coated CoCrMoNi stick electrode designed to apply high-temperature resistant hardfacings on hot-working steels subjected to impact, compression, and abrasion, producing a weld metal that retains superior hardness and toughness in extreme heat. It provides excellent resistance to thermal fatigue, scaling, and corrosive gases in oxidizing or carburizing atmospheres up to 1000°C, making it essential for protecting critical components in power and chemical industries.

Classifications: EN ISO 14700 E Co2; DIN 8555 E 20-UM-40-CSTZ.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards. GTAW UTP A 6170 Co, GMAW UTP A 6170 Co.

Benefits: Excellent hot-cracking and scale resistance up to 1000°C; maintains high hardness under thermal stress; reliable for combined wear and heat exposure in harsh conditions.

Applications: Surfacing heat-resistant Ni alloys in power plants, hardfacing gas turbine components, and protecting ethylene production equipment in mining and industrial settings.

Hardness: Not specified

Technical Data Sheet | Safety Data Sheet

Additional Suggestions: SK STELKAY 6-G, SK STELKAY 21-G, SK STELKAY 25-G – contact us for details.

COPPER ALLOYS

For acid, alkaline, chloride-bearing, or mixed chemical environments in process plants and slurry systems.

UTP 32 - Tin-Bronze Stick Electrode

Description: This dependable basic-coated tin-bronze stick electrode, developed for repairing and surfacing copper-tin alloys with 6–8% Sn, as well as applying strong claddings on cast iron and steel. It ensures effortless weldability, clean slag removal, and corrosion resistance that aligns perfectly with the base metal, with excellent seawater durability and gliding properties, making it a staple for maintaining equipment in corrosive industrial and marine settings.

Classifications: DIN 1733 EL-CuSn7; AWS A5.6 E CuSn-C (mod.); Material-No. 2.1025.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards. GTAW UTP A 32.

Benefits: Corrosion resistance aligned with base metals; high seawater durability with superior gliding properties and solid mechanicals

Applications: Repairing copper-tin alloys in mining tools, cladding cast iron and steel in chemical processing, and surfacing parts in marine or aggressive environments requiring low-friction performance.

Hardness: Approx. 100 HB

Technical Data Sheet | Safety Data Sheet

UTP 387 - Copper-Nickel Stick Electrode

Description: This advanced basic-coated copper-nickel stick electrode is tailored for joining and surfacing alloys with up to 30% nickel, non-ferrous alloys, and dissimilar steels, offering exceptional seawater resistance and corrosion-proof welds in all positions except vertical-down. With a stable arc and consistent results, it's perfect for building durable, high-integrity structures in marine, chemical, and offshore applications.

Classifications: DIN 1733 EL-CuNi30Mn; AWS A5.6 E CuNi; Material-No. 2.0837.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards. GTAW UTP A 387, GMAW UTP A 387.

Benefits: Superior corrosion and seawater resistance; strong mechanical properties with yield (Rp0.2 >240 MPa), tensile (Rm >390 MPa), elongation (A >30%), and impact (KV >80 J); versatile for dissimilar materials.

Applications: Repairs in shipbuilding, oil refineries, food industry vessels, and corrosion-resistant equipment in mining slurry systems or offshore platforms.

Hardness: Approx. 100 HB

Technical Data Sheet

UTP 485 - Aluminum Stick Electrode with 5% Si

Description: This aluminum stick electrode with 5% Si and a special coating for joining and surfacing AlSi alloys with Si content up to 7%, as well as dissimilar aluminum alloys, offering excellent weldability, stable arcs, and clean slag removal for smooth, pore-free welds in repair and fabrication tasks.

Classification: EN ISO 18273 E AlSi5; AWS A5.3 E4043 (mod.).

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards.

Benefits: Excellent weldability and slag removal; high resistance to hot cracking; strong mechanical properties with yield (Rp0.2 40 MPa), tensile (Rm 120 MPa).

Applications: Joining and surfacing AlSi alloys in mining equipment, repairing dissimilar aluminum materials in chemical apparatus, and fabricating lightweight structures in industrial settings.

Hardness: Not specified.

Technical Data Sheet | Safety Data Sheet

UTP A 34 N - Aluminum Bronze TIG Rod with High Mn

Description: This aluminum bronze TIG rod with high Mn content is for joining and surfacing complex aluminum bronzes, including those with high Mn, as well as on steel and cast steel using nodular iron rod, providing high strength, wear resistance, and corrosion protection in demanding environments.

Classification: EN ISO 24373 S CuMnNiAl; AWS A5.7 ER CuMnNiAl.

Format: TIG rod (e.g., 1.6-3.2 mm) - compliant with Canadian CSA standards. SMAW UTP 34 N.

Benefits: Superior wear and corrosion resistance; excellent mechanicals with yield (Rp0.2 400 MPa), tensile (Rm 650 MPa).

Applications: Surfacing aluminum bronzes in mining tools, repairing high-Mn bronzes in marine equipment, joining to steel in chemical processing plants.

Hardness: Approx. 220 HB.

Technical Data Sheet | Safety Data Sheet

UTP A 38 - Pure Copper TIG Rod

Description: This pure copper TIG rod is for welding oxygen-free copper types (OF-Cu, SE-Cu, SW-Cu, SF-Cu, Cu-Ag), offering high electrical conductivity, good corrosion resistance, and easy flow for precise repairs in electrical and high-conductivity applications.

Classification: EN ISO 24373 S Cu 1898 (CuSn1); AWS A5.7 SFA-5.7 ER Cu; Material-No. 2.1006.

Format: TIG rod (e.g., 1.6-3.2 mm) - compliant with Canadian CSA standards.

Benefits: High conductivity and corrosion resistance; mechanical properties with yield (Rp0.2 60 MPa), low spatter and good fusion for clean results.

Applications: Welding conductor rails and components in the electrical industry, joining copper parts in mining equipment.

Hardness: Approx. 60 HB.

Technical Data Sheet | Safety Data Sheet

UTP A 381 - Deoxidized Copper MIG/MAG Solid Wire

Description: This deoxidized copper MIG/MAG solid wire is ideal for welding oxygen-free copper types (OF-Cu, SE-Cu, SW-Cu, SF-Cu, Cu-Ag), providing a fluid weld pool, good wetting, and high electrical conductivity (15-20 S m/mm²) with a melting range of 1020-1050°C, making it perfect for apparatus and pipeline construction.

Classification: EN ISO 24373 S Cu 1897 (CuSn0.3); AWS A5.7 SFA-5.7 ER Cu.

Format: MIG/MAG solid wire (e.g., 0.8-1.6 mm) - compliant with Canadian CSA standards. GTAW UTP A 381.

Benefits: Good wetting and fluid weld pool for smooth application; high electrical conductivity; strong mechanical properties with yield (Rp0.2 60 MPa).

Applications: Welding oxygen-free pure copper in apparatus and pipeline construction, repairing mining equipment exposed to conductive or corrosive conditions.

Hardness: Approx. 60 HB.

Technical Data Sheet | Safety Data Sheet

Additional Suggestions: UTP A 34 N, UTP 5 – contact us for details.

CAST IRON SPECIAL ALLOYS

For cold-welding and rebuilding grey, ductile, and mixed cast irons in repair and maintenance, focusing on crack resistance and machinability.

UTP 8 - Pure-Nickel Stick Electrode for Cast Iron

Description: This graphite-based, coated pure-nickel stick electrode is ideal for cold welding grey and malleable cast iron, cast steel, and joining these to steel, copper, or copper alloys in repair and maintenance. It delivers spatter-free welding at low amperage, no undercutting, and highly machinable deposits for smooth transitions, making it ideal for precise maintenance when paired with ferro-nickel buttering for enhanced crack resistance.

Classifications: EN ISO 1071 E C Ni-Cl 1; AWS A5.15 E Ni-Cl.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards.

Benefits: Spatter-free with minimal amperage for clean, efficient welding; no undercutting with fillable deposits; strong yield strength (Rp0.2 approx. 220 MPa) for machinable, durable repairs.

Applications: Repairing cast iron engine blocks, gear housings, and machine bases in heavy machinery, and joining cast materials to steel or copper in industrial settings.

Hardness: Approx. 180 HB.

Technical Data Sheet | Safety Data Sheet

UTP 86 FN - Ferro-Nickel Stick Electrode for Cast Iron

Description: This is a versatile graphite-basic coated ferro-nickel stick electrode for joining and surfacing grey cast iron (EN GJL 100-400), nodular cast iron (EN GJS 400-700), and malleable cast iron (EN GJMB 350-650), as well as connecting these to steel or cast steel. Universal for repair, construction, and production welding, it offers excellent buttering on cast iron, stable arcs, flat seams without undercutting, and optimal fillet welds, with a bimetallic core for high current and deposition rates in challenging applications.

Classifications: EN ISO 1071 E C NiFe-13; AWS A5.15 E NiFe-Cl.

Format: Covered electrode (stick electrode, e.g., 2.5-4.0 mm x 300-350 mm) - compliant with Canadian CSA standards.

Benefits: Highly crack-resistant and easily machinable; high current capacity and deposition rate; impressive yield strength (Rp0.2 approx. 340 MPa) with smooth bead appearance for professional outcomes.

Applications: Repairing cast irons in mining tools, constructing welds between cast iron and steel, and surfacing industrial machinery for improved durability and performance.

Hardness: Approx. 220 HB.

Technical Data Sheet | Safety Data Sheet

Additional Suggestions: UTP 83 FN, UTP 86 FN – contact us for details.