EN
AWS A5.14 ERNiCrMo-13 (Alloy 59) 2.4mm TIG Welding Wire for Flue Gas Desulfurization & Severe Chemical Corrosion
High-performance nickel-chromium-molybdenum filler metal ERNiCrMo-13 (UNS N06059, 2.4mm) engineered specifically for joining and cladding in high-chloride, acidic environments. Delivers exceptional weld metal ductility, minimal microsegregation, and superior resistance to hot cracking in critical FGD absorbers, ducting, and damp industrial scrubber systems.
- Overview
- Specification
- Product Features
- Product Applications
- FAQ
- Recommended Products
Product Overview
High-Purity AWS A5.14 ERNiCrMo-13 Filler Metal: Metallurgy and Weldability for Alloy 59 Systems
ERNiCrMo-13 (Alloy 59, UNS N06059) represents the most advanced generation of Ni-Cr-Mo nickel-base welding consumables. Formulated with balanced 23% Chromium and 16% Molybdenum, and strictly controlled with ultra-low Carbon (≤ 0.010%) and Silicon (≤ 0.10%), this 2.4mm TIG welding rod prevents the precipitation of secondary phases, intermetallic sigma-phases, and carbides during multi-pass welding cycles.
Unlike conventional C-276 or C-4 alloys, ERNiCrMo-13 delivers improved thermal stability and exceptional resistance to hot cracking without requiring post-weld heat treatment (PWHT). The weld deposits match or exceed the corrosion resistance of corresponding parent metals (Alloy 59, C-276, C-22, 6-Mo super austenitic stainless steels, and super duplex grades), making it the gold standard filler wire for severe chemical fabrication and environmental pollution control systems.
Chemical Composition and Mechanical Properties Specification
| Chemical Element | Specification Standard (wt%) | Typical Batch Result |
|---|---|---|
| Nickel (Ni) | Remainder (≥ 59.0%) | 59.50% |
| Chromium (Cr) | 22.0 – 24.0% | 22.85% |
| Molybdenum (Mo) | 15.0 – 16.5% | 15.70% |
| Iron (Fe) | ≤ 1.50% | 0.85% |
| Carbon (C) | ≤ 0.010% | 0.005% |
| Manganese (Mn) | ≤ 0.50% | 0.22% |
| Silicon (Si) | ≤ 0.10% | 0.04% |
| Phosphorus (P) | ≤ 0.015% | 0.006% |
| Sulfur (S) | ≤ 0.010% | 0.002% |
| Aluminum (Al) | 0.10 – 0.40% | 0.25% |
Key Engineering Advantages of 2.4mm ERNiCrMo-13 TIG Wire in Aggressive Chloride Environments
- Outstanding Pitting & Crevice Corrosion Resistance (PREN ≥ 74): The optimized Cr-Mo metallurgical matrix provides superior resistance to localized breakdown in high-chloride, acidic slurries, significantly outperforming ERNiCrMo-4 (Alloy C-276) in oxidizing acid mixtures.
- Superior Thermal Stability & Hot Cracking Resistance: Ultra-low iron, carbon, and silicon levels prevent microsegregation and boundary precipitation during weld solidification, ensuring high ductility and impact toughness even down to cryogenic temperatures (-196°C).
- Exceptional Resistance to Wet Flue Gas Acid Condensation: Immune to stress corrosion cracking (SCC) and intergranular attack in aggressive environments containing sulfuric acid ( H2SO4), hydrochloric acid (), hydrofluoric acid (), and halide salts.
- High-Precision Surface Finish & Feedability: Every 2.4mm TIG rod undergoes precision shaving, mechanical straightening, and ultrasonic cleaning, ensuring smooth arc ignition, zero porosity, and uniform puddle fluidity under 100% Argon or Ar/He shielding gases.
- Dissimilar Metal Joining Versatility: Ideal for welding matching Alloy 59 base materials, as well as dissimilar combinations between nickel alloys, super austenitic stainless steels (e.g., 254SMO, 904L), duplex alloys, and carbon steels.
Industrial Applications of ERNiCrMo-13 TIG Rods in Flue Gas Desulfurization (FGD) and Severe Process Plants
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Wet Flue Gas Desulfurization (FGD) Absorber Towers: Welding of absorber vessel walls, wet limestone spray header zones, inlet/outlet gas ducting, and mist eliminator supports exposed to boiling chloride and sulfurous slurries.
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FGD Reheaters and Damper Systems: Cladding and joining structural components subjected to fluctuating wet-dry acid condensation zones and severe localized pitting.
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Chemical & Petrochemical Processing Vessels: Fabrication of reactors, heat exchangers, evaporators, and column piping handling hot contaminated mineral acids (phosphoric, sulfuric, and nitric-hydrofluoric pickling baths).
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Waste Incineration & Thermal Power Scrubbers: High-temperature corrosion-resistant overlay welding on boiler tubes and waste gas cleaning equipment handling volatile halide gases.
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Marine, Pulp & Bleaching Industries: Chlorine dioxide (
𝐶 𝑙 𝑂 2) bleaching towers, offshore sour gas pipeline fittings, and marine scrubber exhaust gas cleaning systems (EGCS). 
Frequently Asked Questions About ERNiCrMo-13 (Alloy 59) 2.4mm TIG Welding Wire
Q1: What makes ERNiCrMo-13 (Alloy 59) superior to ERNiCrMo-4 (C-276) for FGD systems?
A: ERNiCrMo-13 features a higher Chromium content (23% vs. 16% in C-276) and an ultra-low Silicon and Carbon balance with no Tungsten addition. This composition eliminates the precipitation of detrimental -phases and carbides in the HAZ (Heat Affected Zone), offering significantly higher critical pitting temperatures (CPT), critical crevice temperatures (CCT), and superior resistance to mixed oxidizing/reducing acid media present in wet FGD absorbers.
Q2: What are the recommended welding parameters and shielding gas for 2.4mm ERNiCrMo-13 TIG wire?
A: For 2.4mm (3/32") TIG welding:
- Current: DCEN (Direct Current Electrode Negative), 90–150 Amps
- Voltage: 12–16 V
- Shielding Gas: 100% High-Purity Argon (
𝐴 𝑟 ≥ 99.999 %) or Argon + Helium mixture() to increase heat input and bead wetting. - Gas Flow Rate: 10–14 L/min with gas lens configuration.
- Interpass Temperature: Strictly maintained below 150°C (300°F) to preserve corrosion properties and prevent grain coarsening.
Q3: Does ERNiCrMo-13 weld metal require Post-Weld Heat Treatment (PWHT)?
A: No. Under standard operational parameters, ERNiCrMo-13 is used in the as-welded condition. Its ultra-high thermal stability prevents sensitization in the weld metal and heat-affected zone, retaining full ductility and corrosion resistance without post-weld solution annealing.
Q4: What quality certifications and inspection reports accompany each shipment?
A: Every batch of our ERNiCrMo-13 welding wire is supplied with an EN 10204 Type 3.1 Mill Test Certificate (MTR) detailing exact heat-specific chemical analysis, tensile testing, elongation, bend test results, and visual/dimensional verification in compliance with AWS A5.14 and ASME Section II Part C.
Q5: Can 2.4mm ERNiCrMo-13 wire be used for dissimilar metal joining?
A: Yes. ERNiCrMo-13 is extensively used for buffer layers and dissimilar joint welds between nickel alloys (Alloy 59, C-276, Alloy 625), super duplex steels (2507), super austenitic steels (e.g., 6% Mo grades), and low-alloy structural steels, providing high dilution tolerance without crack susceptibility.
