XUPER 660 NH Welding Electrodes

The XUPER 660 NH Welding Electrodes from Metals And Welding Specialities are engineered to deliver superior performance in high-temperature and wear-resistant environments. Designed for welding materials corresponding to UNS N06600 and conforming to ASTM Grade ERNiCr-3, these electrodes are widely recognized under the Universal Standard: AWS A5.11 ENiCrFe-3. They provide exceptional metallurgical stability, corrosion resistance, and mechanical strength, making them an ideal choice for critical applications where durability under heat and oxidation stress is essential.

Manufactured with advanced coating technology, XUPER 660 NH Welding Electrodes ensure a smooth, stable arc and minimal spatter, allowing for clean weld deposits with excellent bead appearance. The specially formulated nickel-chromium-iron alloy composition offers outstanding resistance to scaling and cracking even when exposed to temperatures exceeding 980°C. These electrodes are primarily used for joining and overlay welding of nickel-based alloys, stainless steels, and dissimilar metals that operate in demanding service conditions.

In industrial settings such as power generation, petrochemical processing, and aerospace manufacturing, the XUPER 660 NH electrodes demonstrate unmatched reliability. Their strong metallurgical bonding properties make them suitable for components like turbine blades, valves, heat exchangers, and furnace equipment that must endure both thermal cycling and corrosive atmospheres. The electrodes’ excellent wetting characteristics and slag removability also enhance weld efficiency, reducing downtime and post-weld cleaning effort.

Each batch of XUPER 660 NH Welding Electrodes is produced under stringent quality control to guarantee consistency in mechanical properties and chemical composition. Their high nickel content ensures structural integrity in welded joints, while the chromium component strengthens oxidation resistance, preventing material degradation over time. This balance of elements results in superior tensile strength, elongation, and impact resistance even after prolonged exposure to high temperatures.

Whether used for new fabrication or repair welding, XUPER 660 NH provides the dependability and longevity professionals expect from premium-grade welding consumables. Backed by the expertise of Metals And Welding Specialities, these electrodes deliver exceptional weld quality across both manual and mechanized processes, ensuring confidence in every weld joint. For industries where safety, performance, and endurance are non-negotiable, XUPER 660 NH stands out as the electrode of choice.

• Specification XUPER 660 NH Welding Electrodes

  Parameter	Value
  Electrode Type	Moisture-resistant, low hydrogen, non-hygroscopic coating
  Application / Suitable for	Low alloy steels, medium carbon steels, sulphur-bearing steels, structural & high tensile steels
  Tensile Strength	57 kg/mm² (≈ 81,000 psi)
  Current Type	AC / DC+ (DCEP)
  Recommended Current Ranges (I-Range)	2.50 mm: 70-80 A 3.15 mm: 120-135 A 4.00 mm: 150-165 A 5.00 mm: 185-200
  Alternate Current Range (II-Range)	2.50 mm: 60-70 A 3.15 mm: 100-115 A 4.00 mm: 135-150 A 5.00 mm: 165-185
  Typical Applications	Crane jibs, frames, truck chassis, heavy equipment maintenance, structural components

• Equivalent Grade Of AWS ENiCrMo-4 Coated Electrodes

  Standard	AWS (A5.11)	UNS	Werkstoff Nr.	ISO	Trade Name (Common)
  Equivalent Grade	ENiCrMo-4	W8611	2.4856	14172 E Ni 6276	Inconel 625, UTP A 625, OK 92.86, Thermanit 625

• XUPER 660 NH Welding Electrodes Parameters

  Parameter	Value / Range
  Current / Polarity	AC / DCEP (+)
  Tensile Strength (typical)	88,000 psi (~ 607 MPa)
  Hardness (as deposited)	HRB ~ 95
  Hardness (after work-hardening)	~ HRC 30
  Amperage – A Range (heavy / multipass)	1/8″ (3.2 mm): 140 – 180 A 5/32″ (4.0 mm): 180 – 250 A
  Amperage – B Range (moderate)	1/8″ (3.2 mm): 90 – 130 A 5/32″ (4.0 mm): 120 – 160 A
  Recommended Weave / Technique	Weaving limited to 1½ × electrode diameter
  Maximum Preheat / Heat Limit	Do not heat 12 % Mn steel over 400 °F (204 °C)
  Typical Hardness (alternative source)	As deposited: HRB 80–90 | Work hardened: HRC 28–32

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