AWS Class ERNiCrMo-13 MIG & TIG
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ERNiCrMo-13 Welding Wire (Alloy 59) – TIG Filler Rod & MIG Wire Supplier in India
Nicorex Alloys is an ISO 9001 / ISO 14001 certified Mumbai-based supplier and stockist of ERNiCrMo-13 welding wire. We provide these wires classified as per AWS A5.14 / ASME SFA 5.14.
ERNiCrMo-13 weld deposit contains approximately 59% Ni, 22.5% Cr, and 16% Mo with ultra-low carbon (0.010% max) and silicon (0.10% max), the lowest C and Si limits among all NiCrMo filler metals in AWS A5.14. It is also designated Alloy 59 filler metal or Nickel Alloy Filler Metal 59 and classified under UNS N06059 (Werkstoff Nr. 2.4607, EN ISO 18274 S Ni 6059). This nickel-chromium-molybdenum solid wire carries the highest Pitting Resistance Equivalent Number (PREN ≈76) of any NiCrMo filler metal. Alloy 59 has unmatched chloride pitting and crevice corrosion resistance. The absence of tungsten eliminates secondary phase precipitation during welding, while the niobium-free composition avoids Laves phase formation at dissimilar weld interfaces. Typical all-weld-metal tensile strength exceeds 720 MPa (104 ksi), yield surpasses 450 MPa (65 ksi), and elongation reaches 35%+. ERNiCrMo-13 resists both oxidising and reducing corrosive media simultaneously, a dual capability shared by few other single filler metals.
Available as TIG rods (1.6, 2.4, 3.2 mm) and MIG spools (0.9, 1.2, 1.6 mm), this filler wire welds Alloy 59, C-276, C-22, C-4, Alloy 31, Alloy 926, 6Mo super-austenitic grades, super duplex steels, and dissimilar joints to carbon and low-alloy steels. Every batch ships with a Mill Test Certificate 3.1 per EN 10204.
ERNiCrMo-13 Welding Wire Specifications
The ERNiCrMo-13 welding wire specifications covering AWS classification, process compatibility, diameters, shielding gas, and more are listed below.
| AWS Classification | ERNiCrMo-13 |
|---|---|
| ASME SFA | SFA 5.14 |
| UNS Number | N06059 |
| Welding Processes | GTAW (TIG), GMAW (MIG), SAW, PAW |
| Polarity | GTAW: DCEN (Straight polarity) | GMAW: DCEP (Reverse polarity) |
| Welding Positions | All: Flat (1G), Horizontal (2G), Vertical-Up (3G), Vertical-Down, Overhead (4G) |
| Shielding Gas | GTAW: 100% Argon (Ar 4.6 min), or Ar + max 3% H₂ GMAW: 100% Argon (spray transfer); Ar/He blends for pulsed MIG |
| TIG Rod Diameters | 1.6 mm (1/16″), 2.4 mm (3/32″), 3.2 mm (1/8″) |
| MIG Wire Diameters | 0.9 mm (0.035″), 1.2 mm (0.045″), 1.6 mm (1/16″) |
| TIG Rod Length | 1000 mm (36″) |
| TIG Packaging | 5 kg tubes / 20 kg cartons |
| MIG Spool Weight | 15 kg (33 lb) standard spool |
AWS Classification Explained: What Does ERNiCrMo-13 Mean?
Under AWS A5.14, the ERNiCrMo-13 designation specifies a nickel‑chromium‑molybdenum filler metal with a defined composition and variant number.
| Designation Element | Meaning |
|---|---|
| ER | Electrode/Rod – a bare solid wire or rod for GTAW (TIG), GMAW (MIG), SAW, and PAW |
| Ni | Primary base element is Nickel (balance, min 56%) |
| Cr | Secondary element is Chromium (22.0–24.0%) |
| Mo | Tertiary element is Molybdenum (15.0–16.5%) |
| –13” | 13th composition variant in the NiCrMo family within AWS A5.14 |
The “-13” does not indicate 13% of any element: it is simply the sequence number.
Chemical Composition of ERNiCrMo-13 Weld Deposit (%)
The chemical composition of ERNiCrMo-13 Welding Wire, as per AWS A 5.14, along with its proportion, is listed below in the table:
| Element | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) | Iron (Fe) | Carbon (C) | Silicon (Si) | Manganese (Mn) | Aluminium (Al) | Cobalt (Co) | Copper (Cu) | Phosphorus (P) | Sulphur (S) | Other Elements Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AWS A5.14 Requirement | Balance (min 56.0%) | 22.0–24.0% | 15.0–16.5% | 1.5% max | 0.010% max | 0.10% max | 0.50% max | 0.10–0.40% | 0.30% max | 0.50% max | 0.015% max | 0.010% max | 0.50% max |
These values represent the weld deposit analysis per AWS A5.14. Actual weld metal composition depends on dilution from base metal and welding parameters.
All-Weld-Metal Mechanical Properties of ERNiCrMo-13
The following all-weld-metal mechanical properties are for the as-welded condition, tested per AWS A5.14 requirements, and are listed below:
| Property | Tensile Strength | Yield Strength (0.2%) | Elongation (%) | Charpy Impact (RT) |
|---|---|---|---|---|
| Minimum Requirement | 760 MPa (110 ksi) | Not specified | Not specified | Not specified |
| Typical (As-Welded) | 700–720+ MPa (102–104+ ksi) | 400–450+ MPa (58–65+ ksi) | 30–35%+ | >70 J (>51.6 ft-lbs) |
Solution annealing at 1100–1180°C followed by rapid cooling can bring mechanical and corrosion properties into line with the Alloy 59 base metal specification. This treatment is optional and typically performed only for the most aggressive service conditions.
Base Metal Compatibility and Dissimilar Joint Applications for ERNiCrMo-13
ERNiCrMo-13 is an over-alloyed filler metal. It welds Alloy 59 to itself and over-matches less-alloyed base metals for maximum weld-zone corrosion resistance.
| Base Metal | UNS | P-Number | Joint Type |
|---|---|---|---|
| Alloy 59 | N06059 | P-43 | Similar (P-43 to P-43) |
| Alloy C-276 | N10276 | P-43 | Similar (P-43 to P-43) |
| Alloy C-4 | N06455 | P-43 | Similar (P-43 to P-43) |
| Alloy C-22 | N06022 | P-43 | Similar (P-43 to P-43) |
| Alloy 31 | N08031 | P-45 | Dissimilar (P-45 to P-43) |
| Alloy 926 | N08926 | P-45 | Dissimilar (P-45 to P-45) |
| 254 SMO | S31254 | P-8/45 | Dissimilar |
| Super Duplex 2507 | S32750 | P-10H | Dissimilar |
| Carbon Steel | Various | P-1 | Dissimilar overlay/cladding |
| Low-Alloy Steel | Various | P-3/4/5 | Dissimilar overlay/cladding |
The key advantage of ERNiCrMo-13 as an over-alloyed filler is its Nb-free composition. Unlike ERNiCrMo-3 (625) with 3.5% Nb, the absence of niobium eliminates Nb segregation and Laves phase formation at dissimilar weld interfaces: the preferred filler for joining super-austenitic and super duplex stainless steels where long-term corrosion performance is critical.
Recommended Welding Parameters for ERNiCrMo-13 MIG & TIG Filler Metal & Wire
NiCrMo alloys need controlled heat input and restricted interpass temperatures to preserve corrosion resistance. ERNiCrMo-13 has low hot cracking sensitivity due to its ultra-pure composition.
GTAW (TIG) Parameters
| Diameter | Voltage (V) | Amperage (A) | Shielding Gas |
|---|---|---|---|
| 1.6 mm (1/16″) | 14–18 | 90–130 | 100% Argon |
| 2.4 mm (3/32″) | 15–20 | 120–175 | 100% Argon |
| 3.2 mm (1/8″) | 15–20 | 150–220 | 100% Argon |
GMAW (MIG) Parameters – Spray Transfer
| Diameter | Voltage (V) | Amperage (A) | Shielding Gas |
|---|---|---|---|
| 0.9 mm (0.035″) | 26–29 | 150–190 | 100% Argon |
| 1.2 mm (0.045″) | 28–32 | 180–220 | 100% Argon |
| 1.6 mm (1/16″) | 29–33 | 200–250 | 100% Argon |
Stringer bead technique is recommended throughout. Interpass temperature must not exceed 150°C (302°F). Maximum heat input is 8 kJ/cm for manual GTAW/GMAW, 6 kJ/cm for automated TIG hot-wire, and 10 kJ/cm for plasma. Root protection with Argon 4.6 is mandatory. No preheat or PWHT required.
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Industrial Welding Applications of ERNiCrMo-13 (Alloy 59) Filler Wire
ERNiCrMo-13 is specified where the most aggressive corrosive environments demand the highest-performance NiCrMo weld deposit available.
- Chemical Processing: For reactors, heat exchangers, piping, valves, and acid coolers in sulfuric, hydrochloric, phosphoric, and mixed acids.
- Flue Gas Desulphurisation (FGD) and Waste Incineration: Used in scrubbers, absorber internals, and ducting in wet FGD and waste incineration plants with hot HCl, HF, and SO₂/SO₃.
- Oil and Gas: Suitable for sour gas equipment, acid gas injection, and downhole components in H₂S + CO₂ + chlorides.
- Marine, Offshore, and Desalination: Ideal for seawater-cooled exchangers, brine systems, desalination units, and SO₂ scrubbers.
- Pharmaceutical and Fine Chemical Processing: Used in API reactors and ultra-pure media systems.
- Pulp and Paper: ClO₂ generators, bleach washers, filtrate tanks, and piping exposed to wet chlorine gas, chlorine dioxide, and hypochlorite.
Storage and Handling of ERNiCrMo-13 Welding Filler Wire
ERNiCrMo-13 is a solid bare wire, not a coated electrode. The primary. Store in original sealed packaging at 15–30°C, humidity below 60% RH. Keep wire away from carbon steel, copper, zinc, and lead. Trace amounts of low-melting-point metals cause hot cracking in nickel alloy welds. Clean TIG rods with acetone before use. Return partially used MIG spools to sealed packaging. Shelf life is indefinite when stored correctly; inspect for discolouration before use.
Available Forms, Diameters, and Packaging of ERNiCrMo-13 Filler Wire
Nicorex Alloys stocks ERNiCrMo-13 in 5 forms to suit manual and automated welding.
| Form | Diameters | Packaging |
|---|---|---|
| TIG Rod (GTAW) | 1.6, 2.4, 3.2 mm | 5 kg tubes, 20 kg cartons, 1000 mm (36″) cut lengths |
| MIG Spool (GMAW) | 0.9, 1.2, 1.6 mm | 15 kg standard spool (D300/BS300) |
| SAW Wire | 1.6, 2.4, 3.2 mm | 25 kg coils or spools |
| Plasma Wire (PAW) | 0.9, 1.2 mm | 15 kg spools |
| Drum Pack (GMAW) | 1.2, 1.6 mm | Available on request for high-volume automated welding |
All ERNiCrMo-13 wire from Nicorex Alloys ships with a Mill Test Certificate 3.1 per EN 10204, documenting chemical analysis, mechanical properties, and heat/lot traceability. Custom diameters available on request.
How to Order ERNiCrMo-13 Welding Wire from Nicorex Alloys
To order ERNiCrMo-13 (Alloy 59) welding wire, specify these 8 important details:
- Product Form - TIG Rod / MIG Spool / SAW Wire
- AWS Classification - ERNiCrMo-13 per AWS A5.14
- Diameter - Specify in mm or inches
- Quantity - In kg
- Spool Type / Size Preference - Specify
- Third-Party Approvals Required - ABS / DNV / Lloyds / Bureau Veritas / TUV
- Test Certificate Requirements - EN 10204 3.1 / 3.2
- Test Certificate Requirements - EN 10204 3.1 / 3.2
Nicorex Alloys can supply matching consumables across processes: ERNiCrMo-13 TIG rod + MIG wire + ENiCrMo-13 SMAW electrode for the same Alloy 59 project.
Frequently Asked Questions
Can ERNiCrMo-13 be Used as an Over-Alloyed Filler for Super Duplex and Super-Austenitic Stainless Steels?
Yes, ERNiCrMo-13 (PREN ≈76) is recommended by VDM for over‑alloyed welding of Alloy 31, Alloy 926, and super duplex grades, with Nb‑free chemistry preventing Laves phase and ensuring weld‑zone corrosion resistance exceeds the base metals.
What is the Maximum Interpass Temperature when Welding with ERNiCrMo-13?
Keep interpass temperature at or below 150°C (often 120°C by spec) to avoid secondary phase precipitation and loss of corrosion resistance, verifying with a pyrometer or thermocouple.
What makes ERNiCrMo-13 Different from ERNiCrMo-3 (Alloy 625) for Chemical Plant Welding?
ERNiCrMo-13 offers higher Cr (23% vs 22%), much higher Mo (16% vs 9%), ultra‑low C (0.010% vs 0.10%), and no Nb (vs 3.5%), giving significantly better resistance in severe mixed acid and chloride environments.
Does ERNiCrMo-13 Require Post-Weld Heat Treatment?
No PWHT is normally required because ultra‑low C and Si prevent sensitisation, though optional solution annealing at 1100–1180°C with rapid cooling may be used for the harshest services.
What Spool Sizes and TIG Rod Lengths are Available for ERNiCrMo-13 from Nicorex Alloys?
TIG rods are 1000 mm long in 5 kg tubes or 20 kg cartons, MIG wire is on 15 kg D300/BS300 spools, and SAW wire ships on 25 kg coils, all with MTC 3.1 and optional drum packs for automated GMAW.
When not to Use ERNiCrMo-13 (Alloy 59) Welding Wire?
ERNiCrMo-3 (625) offers sufficient corrosion resistance when service exceeds 600°C and creep strength controls, or when using CO₂‑containing GMAW shielding gases that can raise carbon above 0.010% and impair intergranular corrosion resistance.