Hangbo Alloy Group
Shanghai · Est. 2012
UNS N04060 / AWS A5.11 ENiCu-2 & AWS A5.14 ERNiCu-7 / W.Nr 2.4377 (NiCu30MnTi) — Nickel-copper welding electrode and wire engineered for joining Monel 400, R-405, and K-500, and for corrosion-resistant cladding of steel in marine and chemical service.
Monel 60 is a nickel-copper welding consumable for joining the Monel family of alloys — principally Monel 400 (UNS N04400), Monel R-405, and Monel K-500. As a covered electrode it is classified AWS A5.11 ENiCu-2 (SMAW), and as a bare wire/rod it is classified AWS A5.14 ERNiCu-7 (RMonel 60; GTAW/GMAW/SAW). Both forms share the same base UNS designation N04060 and Werkstoff number 2.4377 (NiCu30MnTi).
The deposited weld metal of Monel 60 has chemical and corrosion characteristics essentially equivalent to Monel 400 base metal: a nickel-copper solid-solution alloy with about 30% copper and low iron. This gives it excellent resistance to seawater, salt solutions, alkalis, and many non-oxidizing acids, combined with good strength and ductility from cryogenic temperatures up to about 425°C (800°F). Because the deposit is slightly magnetic and tougher than pure-nickel or stainless weld metals, Monel 60 is the standard choice for Monel fabrication and for corrosion-resistant cladding of steel in marine, offshore, chemical, and food-processing equipment.
Hangbo Alloy Group supplies Monel 60 as ENiCu-2 covered electrodes, ERNiCu-7 TIG rods, MIG wire, and SAW wire — all with full AWS/ASME certification and traceability for critical marine and chemical service.
Hangbo Alloy Group supplies Monel 60 ENiCu-2 covered electrodes, ERNiCu-7 TIG rods, MIG wire, and SAW wire — all with full material certification and traceability. Stock and mill orders available for marine, offshore, and chemical projects.
The chemical composition of Monel 60 / ENiCu-2 is controlled by AWS A5.11 to produce a Monel-type weld deposit (nickel-copper with low iron). The matching bare wire ERNiCu-7 (RMonel 60) has a similar analysis with slightly different titanium/niobium limits.
| Element | AWS A5.11 ENiCu-2 Range (wt%) | Typical Value | Role in the Weld Deposit |
|---|---|---|---|
| Nickel (Ni) | 62.0 – 69.0 | ~65 | Austenitic matrix; corrosion resistance; toughness |
| Copper (Cu) | Remainder | ~30 | Monel-type corrosion resistance; strength |
| Iron (Fe) | ≤ 2.5 | 1.0 | Controlled low for maximum corrosion resistance |
| Manganese (Mn) | ≤ 4.0 | 3.0 | Deoxidation; fluidity; porosity control |
| Titanium (Ti) | ≤ 1.5 | 0.4 | Deoxidation; grain refinement (ERNiCu-7: 1.5-3.0) |
| Niobium + Tantalum (Nb+Ta) | ≤ 2.5 | 0.2 | Carbide stabilization (ERNiCu-7: ≤0.5) |
| Aluminum (Al) | ≤ 1.25 | 0.05 | Deoxidation |
| Carbon (C) | ≤ 0.15 | 0.02 | Controlled low level to preserve corrosion resistance |
| Silicon (Si) | ≤ 1.25 | 1.0 | Deoxidation; controlled to limit cracking |
| Phosphorus (P) | ≤ 0.020 | 0.010 | Impurity control for ductility |
| Sulfur (S) | ≤ 0.015 | 0.008 | Impurity control for hot cracking resistance |
Key compositional insight: The iron content is deliberately kept low (≤2.5%), because iron reduces the corrosion resistance of the nickel-copper deposit in seawater and acids. The ~30% copper balance gives Monel 60 its characteristic combination of seawater/acid resistance and good machinability of the as-welded deposit.
Physical properties of the Monel 60 deposit are similar to those of Monel 400 base metal. Values below are typical and may vary slightly with exact composition and welding process.
| Property | Value | Notes |
|---|---|---|
| Density | ~8.8 g/cm³ | Similar to Monel 400 |
| Melting Range | ~1300 – 1350 °C | Typical for Ni-Cu alloy |
| Thermal Expansion (20–300°C) | ~14.0 × 10−6 /°C | Lower than austenitic stainless steel |
| Thermal Conductivity (at 20°C) | ~21 W/(m·K) | Higher than Ni-Cr alloys; better heat dissipation |
| Electrical Resistivity | ~0.50 μΩ·m | Typical Monel value |
| Magnetic Properties | Slightly magnetic (Ni-Cu solid solution) | |
| Crystal Structure | Face-Centered Cubic (FCC) | |
| Property | Typical Value | AWS A5.11 Minimum |
|---|---|---|
| Tensile Strength (Rm) | 480 – 550 MPa | ≥ 480 MPa (70 ksi) |
| Yield Strength (Rp0.2) | 240 – 300 MPa | — |
| Elongation (A) | 30 – 35% | ≥ 30% |
| Hardness | 140 – 180 HB | — |
Note: The AWS A5.11 / ASME minimum for the ENiCu-2 deposit is about 480 MPa (70 ksi) tensile strength and 30% elongation. Actual values depend on welding process, heat input, shielding gas, and dilution from base metal. Monel 60 weld metal is not age-hardenable — unlike Monel K-500 base metal, it cannot be precipitation-strengthened.
The Monel 60 weld deposit retains useful strength and toughness down to cryogenic temperatures but is limited at the high end. Its recommended continuous service temperature is generally up to about 425°C (800°F). Above this range, strength falls off and oxidation resistance is inferior to nickel-chromium fillers such as the Inconel family. For elevated-temperature oxidation and creep service, an Inconel or Incoloy filler should be specified instead.
| Parameter | SMAW (ENiCu-2) | GTAW (ERNiCu-7) | GMAW (ERNiCu-7) |
|---|---|---|---|
| Process polarity | DCEP (reverse) | DCEN | DCEP |
| Shielding gas / flux | Manual flux coating | Ar or Ar-He | Ar or Ar-He (pulsed/short-arc) |
| Typical current (per size) | 2.5 mm: 45-70 A; 3.15 mm: 80-100 A; 4.0 mm: 90-130 A | low-moderate, short arc | pulsed-spray / short-arc |
| Interpass temperature | Moderate; generally ≤ ~150 °C | ||
| Preheat | Generally not required on Monel base metal | ||
| Electrode conditioning | Redry ENiCu-2 at 250–300°C for ≥1 hour before use | ||
Monel 60 has good crack resistance in the as-welded condition due to its ductile nickel-copper deposit. The main welding concerns are:
Contact Hangbo Alloy Group for certified ENiCu-2 covered electrodes, ERNiCu-7 TIG rods, MIG wire, and SAW wire. Competitive pricing, fast delivery, full mill test reports.
The nickel-copper deposit of Monel 60 has corrosion resistance essentially equivalent to Monel 400 base metal:
Hangbo Alloy Group supplies Monel 60 / ENiCu-2 & ERNiCu-7 in the following product forms, manufactured to AWS A5.11 / A5.14 and ASME SFA-5.11 / SFA-5.14 specifications:
| Product Form | Applicable Standard | Typical Size Range |
|---|---|---|
| Covered Electrodes | AWS A5.11 ENiCu-2 | Diameter 2.5 – 5.0 mm |
| TIG Rods / Cut Lengths | AWS A5.14 ERNiCu-7 | Diameter 1.0 – 3.2 mm; lengths 915 / 1000 mm |
| MIG Wire (spools) | AWS A5.14 ERNiCu-7 | Diameter 0.8 – 1.6 mm; spools 5 – 15 kg |
| SAW Wire | AWS A5.14 ERNiCu-7 | Diameter 2.0 – 4.0 mm; coils / drums |
All products are supplied with EN 10204 Type 3.1 material certificates including chemical analysis, mechanical test results, and AWS/ASME conformance declarations. Certified lots with full traceability are available on request.
| Standard | Description |
|---|---|
| AWS A5.11 / A5.11M | Specification for Nickel and Nickel-Alloy Covered Welding Electrodes — ENiCu-2 |
| AWS A5.14 / A5.14M | Specification for Nickel and Nickel-Alloy Bare Welding Electrodes and Rods — ERNiCu-7 |
| ASME SFA-5.11 / SFA-5.14 | ASME Boiler & Pressure Vessel Code equivalents |
| ASME IX | Qualification: F-No. 41 |
| UNS N04060 | Unified Numbering System designation |
| W.Nr 2.4377 | NiCu30MnTi (European material number) |
| ISO 18274 | SNi4060 (ENiCu-2) / S Ni 4060 (NiCu30MnTi, wire) |
| DIN 1736 | SG-NiCu30MnTi |
| BS 2901 | NA33 |
| Property | Monel 60 ENiCu-2 | ERNiCu-7 (wire) | ERNi-1 (pure Ni) | Inconel 625 ERNiCrMo-3 |
|---|---|---|---|---|
| UNS | N04060 | N04060 | N02111 | N06625 |
| Cu % | Remainder (~30) | Remainder (~30) | ≤ 1.0 | — |
| Ni % | 62 – 69 | 62 – 69 | ≥ 93 | ≥ 58 |
| Cr / Mo | — / — | — / — | — / — | 20-23 / 8-10 |
| Base metal match | Monel 400/405/K-500 | Monel 400/405/K-500 | Nickel 200/201, steel cladding | Inconel 625/825 |
| Seawater resistance | Excellent | Excellent | Good | Excellent |
| Oxidation resistance | Fair (≤425°C) | Fair (≤425°C) | Good | Excellent |
| Reducing-acid resistance | Good | Good | Fair | Excellent |
| Primary applications | Monel joining & cladding | Monel joining & cladding | Nickel & steel overlay | Corrosion-resistant Ni-Cr-Mo welds |
Selection guide: Choose Monel 60 (ENiCu-2 / ERNiCu-7) when welding or cladding Monel 400/405/K-500 and when maximum resistance to seawater and non-oxidizing acids is required at moderate temperatures. Choose pure-nickel ERNi-1 for cladding steel or welding Nickel 200. Choose Inconel 625 filler for aggressive reducing acids, high-temperature oxidation, and marine-Plus environments.
Monel 60 is a nickel-copper welding consumable for joining Monel 400 (UNS N04400), R-405, and K-500. As a covered electrode it is AWS A5.11 ENiCu-2 (SMAW); as bare wire/rod it is ERNiCu-7 (RMonel 60; GTAW/GMAW/SAW). Both share UNS N04060 and W.Nr 2.4377 (NiCu30MnTi). The deposit has corrosion resistance and mechanical properties similar to Monel 400.
AWS A5.11 ENiCu-2 limits: Ni 62.0-69.0%, Cu Remainder, Fe ≤2.5%, Mn ≤4.0%, Ti ≤1.5%, Nb+Ta ≤2.5%, Al ≤1.25%, C ≤0.15%, Si ≤1.25%, P ≤0.020%, S ≤0.015%. The matching wire ERNiCu-7 has similar chemistry but Ti 1.5-3.0% and Nb+Ta ≤0.5%. Iron is kept low (≤2.5%) to preserve corrosion resistance.
Typical as-welded properties: tensile strength 480-550 MPa (70,000-80,000 psi), yield strength 240-300 MPa, elongation 30-35%, hardness about 140-180 HB. The AWS A5.11 minimum is about 480 MPa (70 ksi) tensile and 30% elongation. The deposit is ductile but not age-hardenable.
AWS A5.11 ENiCu-2 (covered) and AWS A5.14 ERNiCu-7 (wire); ASME SFA-5.11/SFA-5.14; ASME IX F-No. 41; UNS N04060; W.Nr 2.4377; ISO 18274 SNi4060 / S Ni 4060 (NiCu30MnTi); DIN 1736 SG-NiCu30MnTi; BS 2901 NA33.
Monel 60 is available for SMAW (ENiCu-2 covered electrode), GTAW (ERNiCu-7 TIG rod), GMAW (ERNiCu-7 MIG wire), and SAW (ERNiCu-7 submerged-arc wire). Shielding gases for GTAW/GMAW are typically argon or argon-helium mixtures; GMAW commonly uses pulsed-spray or short-arc transfer.
Primary applications include welding Monel 400, R-405, and K-500 to themselves; joining Monel to stainless steel or carbon steel; corrosion-resistant overlay/cladding of steel with a Monel-type layer; and fabrication of heat exchangers, pressure vessels, pumps, valves, and marine/offshore components in seawater, caustic, and non-oxidizing acid service.
Monel 60 is the trade/industry name. As a covered electrode it is AWS A5.11 ENiCu-2 (SMAW); as a bare wire/rod it is AWS A5.14 ERNiCu-7 (RMonel 60; GTAW/GMAW/SAW). Both share UNS N04060 and W.Nr 2.4377 and produce essentially the same Monel-type deposit. The difference is product form and process; the covered electrode is for manual/repair work, the bare wire for automated or high-purity welds. The wire (ERNiCu-7) typically has slightly higher titanium (1.5-3.0%) and lower niobium than ENiCu-2.
For SMAW with ENiCu-2, use DCEP (reverse) polarity, a short arc, and low-to-moderate current: 2.5 mm ~45-70 A, 3.15 mm ~80-100 A, 4.0 mm ~90-130 A. Redry electrodes at 250-300°C for at least 1 hour. For GTAW use DCEN with argon; for GMAW use pulsed-spray or short-arc with argon/argon-helium. Keep interpass below ~150°C; preheat is generally not required on Monel.
Hangbo Alloy supplies Monel 60 as ENiCu-2 covered electrodes (2.5-5.0 mm), ERNiCu-7 TIG rods (1.0-3.2 mm, 915/1000 mm lengths), MIG wire on spools (0.8-1.6 mm), and SAW wire (2.0-4.0 mm). All forms can be supplied with AWS/ASME certification and full traceability.
Monel 60 is a well-established nickel-copper filler. Typical pricing is $35-75/kg depending on product form, diameter, certification level, and current nickel/copper markets. Lead times range from 2-6 weeks for standard sizes and 5-10 weeks for certified lots with full traceability. Contact serena@hangboalloy.com for a competitive quote.
Yes. The nickel-copper deposit has corrosion resistance equivalent to Monel 400: excellent in seawater and salt solutions, good in alkaline/caustic environments and many non-oxidizing mineral acids (HCl, H₂SO₄ at moderate conditions), and resistant to chloride stress-corrosion cracking. It is not recommended for strongly oxidizing acids (e.g., nitric acid) or strongly oxidizing high-temperature gases. Service is generally limited to ~425°C (800°F).
Yes. Monel 60 is commonly used to join Monel to stainless steel or carbon steel, and to overlay (clad) carbon and low-alloy steel with a corrosion-resistant Monel-type layer for seawater, chemical, and food-processing equipment. Because Monel is slightly magnetic with a different thermal expansion than steel, moderate heat input and controlled dilution (a buttering/transition layer) are recommended on thick carbon steel.
Monel 60 has good crack resistance due to its ductile nickel-copper deposit. The main concerns are porosity from contamination (oil, moisture, sulfur, lead, phosphorus) and hot cracking if carbon-steel dilution adds excessive iron/carbon at the fusion line. Use clean joint prep, dry electrodes (redried 250-300°C), proper shielding gas, and moderate heat input. Monel 60 is not age-hardenable and needs no post-weld heat treatment.
Monel 60 weld metal is suitable for continuous service up to about 425°C (800°F). Above this, strength decreases and oxidation resistance is inferior to nickel-chromium fillers such as the Inconel family. For elevated-temperature oxidation and creep service, select an Inconel or Incoloy filler. Monel 60 remains fully useful at cryogenic and sub-zero temperatures, retaining good toughness.
