HASTELLOY® G-30 Welding Wire
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HASTELLOY® G-30® Welding Wire (ERNiCrMo-11) Supplier in India
Nicorex Alloys is an ISO 9001 and ISO 14001-certified supplier and stockist of HASTELLOY® G-30® welding wire in India. We supply high-quality ERNiCrMo-11 filler metal, which is strictly classified under AWS A5.14 / ASME SFA-5.14 standards, ensuring our customers receive the reliable performance and chemical resistance required for their most demanding industrial welding applications.
Hastelloy G-30 welding wire deposits 30% Cr, the highest chromium content of any Hastelloy filler metal. Its nominal weld deposit carries 43% Ni, 30% Cr, 15% Fe, 5% Mo, 3% W, 2% Cu, and 2% Co (UNS N06030). Ni-Cr-Mo fillers with 16–22% chromium often struggle with oxidising agents, but this alloy’s higher chromium content provides better resistance to acids. That very high balance of chromium and iron is different from C-type G-30 filler wire, which focuses on having more chromium to create a protective oxide layer that can withstand concentrated nitric acid and wet-process phosphoric acid. Governed by ASME Section IX with F-Number F-43 and A-Number A-11 designations, this alloy ensures your critical welding procedures remain compliant and exceptionally durable.
There are a variety of industrial uses, including wet-process phosphoric acid facilities, nitric acid service, HNO₃/HF pickling, and bleaching systems for pulp and paper. An EN 10204/3.1B mill test certificate, a PMI report, and complete heat traceability are included with each and every spool and rod that was shipped. Both GTAW and GMAW have their own unique set of welding parameters that include current, voltage, and gas settings.
Hastelloy G-30 Welding Wire Specifications
ERNiCrMo-11 welding wire specifications, covering standards, UNS designation, dimensions, and welding processes, are listed below.
| Specification | AWS A5.14 / ASME SFA-5.14 |
|---|---|
| UNS Designation | N06030 |
| Base Metal Standard | ASTM B581, B582, B619, B622, B626 |
| TIG Rod Diameters | 1.6, 2.0, 2.4, 3.2 mm (1/16″, 5/64″, 3/32″, 1/8″) |
| MIG Wire Diameters | 0.8, 0.9, 1.0, 1.2, 1.6 mm (0.035″, 0.045″) |
| TIG Rod Length | 914 mm (36″) standard |
| MIG Spool Weight | 15 kg (33 lb) standard |
| Welding Processes | GTAW (TIG), GMAW (MIG), PAW |
AWS Classification Explained: ERNiCrMo-11
The AWS designation ERNiCrMo-11 follows the naming convention of AWS A5.14. Each segment carries a specific meaning, broken down in the table below.
| Code Segment | Meaning | Details |
|---|---|---|
| E | Electrode | Can carry welding current |
| R | Rod | Supplied as solid wire or straight-cut rod |
| Ni | Nickel-base alloy | Approximately 43% Ni balance |
| Cr | Chromium | Principal alloying element (28.0–31.5%) |
| Mo | Molybdenum | Principal alloying element (4.0–6.0%) |
| -11 | Sequence number | Identifies the G-30 composition |
This filler is distinguished from C-type wires like ERNiCrMo-4 (C-276) and ERNiCrMo-10 (C-22) by the -11 suffix. G-30’s 30% Cr and 15% Fe distinguish it from C-type fillers’ 15–22% Cr and 4–7% Fe. The alloy’s strength shifts from reducing acids to oxidising acids since Mo is reduced to 5% (vs 13–16% in C-types).
Chemical Composition of ERNiCrMo-7 Weld Deposit (%)
The weld deposit chemistry of ERNiCrMo-11, per AWS A5.14, is given below. The 30% Cr is the highest of any standard Hastelloy filler metal.
| Element | Nickel (Ni) | Chromium (Cr) | Iron (Fe) | Molybdenum (Mo) | Tungsten (W) | Cobalt (Co) | Copper (Cu) | Niobium + Tantalum (Nb+Ta) | Manganese (Mn) | Silicon (Si) | Carbon (C) | Phosphorus (P) | Sulphur (S) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Specification (wt%) | Balance (~43) | 28.0–31.5 | 13.0–17.0 | 4.0–6.0 | 1.5–4.0 | 5.0 max | 1.0–2.4 | Not specified in AWS A5.14 | 1.50 max | 0.80 max | 0.03 max | 0.04 max | 0.02 max |
Chromium at 30% creates the thickest protective layer of any Ni-Cr-Mo filler, which gives G-30 an advantage in acidic environments. Iron at 15% strengthens that film while lowering alloy cost below pure Ni-Cr-Mo.
Mechanical Properties of Hastelloy G-30 Welding Wire
Typical all-weld-metal mechanical properties of ERNiCrMo-11 deposits in the as-welded condition are listed below in the following table.
| Property | Tensile Strength | Yield Strength, 0.2% Offset | Elongation in 50 mm | Hardness | Density (base alloy) |
|---|---|---|---|---|---|
| Typical Value | ≥ 620 MPa (100 ksi) | 310 MPa (45 ksi) | 30% | 90 HRB (approx.) | 8.22 g/cm³ (0.297 lb/in³) |
Mill test results typically exceed the minimums listed above. The 30% elongation gives G-30 weld deposits strong ductility, so joints can absorb thermal cycling without cracking.
Base Metal Compatibility of Hastelloy G-30 Welding Wire
Hastelloy G-30 Welding Wire joins nickel alloys, carbon steel, B581 rods and bars, B582 plates and sheets, B619 welded pipes, B622 seamless pipes, B626 welded tubes, and B622 seamless pipes.
| Base Metal Spec. | Grade | ASME P-No. | ASTM Standard / Notes |
|---|---|---|---|
| Nickel Alloy | Alloy G-30 (Hastelloy equivalent) | P-45 | ASTM B581, B582, B619, B622, B626 |
| Dissimilar Metal Joining | Nickel Alloys, Stainless, & Carbon Steel | N/A | Used for joining dissimilar alloys |
| Super-Austenitic & Super Duplex | 254 SMO, AL-6XN, 25-6Mo, Super Duplex 2507 | Various | High corrosion-resistant alloys |
G-30 is recommended for 254 SMO, AL-6XN, and 25-6Mo and 6-7% Mo super-austenitic stainless steels. The G-30 deposit overmatches each base metal in Cr content with 30% Cr and 5% Mo, making the weld more oxidising corrosion-resistant than the parent plate. G-30 works well in super duplex. 2507 (25Cr-7Mo) joints where weld Cr exceeds base metal Cr.
Welding Parameters for Hastelloy G-30 Welding Wire
To ensure your technical data sheet is easy to follow for both TIG and MIG welders, here is the organised parameters table.
| Welding Process | Consumable Diameter | Current (Amps) | Voltage (Volts) | Shielding Gas |
|---|---|---|---|---|
| GTAW (TIG) | 1.6 mm (1/16″) | 60–90 A | 10–14 V | 100% Argon |
| GTAW (TIG) | 2.4 mm (3/32″) | 90–150 A | 10–14 V | 100% Argon |
| GTAW (TIG) | 3.2 mm (1/8″) | 130–200 A | 10–14 V | 100% Argon |
| GMAW (MIG) | 1.0 mm (0.040″) | 150–220 A | 24–28 V | 100% Ar or 75% Ar / 25% He |
| GMAW (MIG) | 1.2 mm (0.045″) | 180–280 A | 26–30 V | 100% Ar or 75% Ar / 25% He |
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Industrial Applications
The following are the industrial applications of a Hastelloy G-30 Welding Wire:
- In wet-process H₃PO₄ facilities, evaporators, heat exchangers, and pipelines encounter fluoride-, chloride-, and silica-contaminated industrial acid.
- Pickling tanks, circulation pipes, and heat exchangers that work with HNO₃ and HNO₃/HF solutions at 60°C and higher use the G-30 TIG filler rod.
- The G-30 TIG filler rod is utilised in industrial bleach washers and tower piping due to its ability to create a protective layer that prevents acidic chemicals from corroding the metal.
- Industrial bleach washers and tower pipework use G-30 TIG filler rod to protect metal from corrosive chemicals.
Storage & Handling of Hastelloy G-30 Welding Wire
Store ERNiCrMo-11 wire in its original sealed packaging in a dry, climate-controlled area (relative humidity below 50%). Keep spools and rods away from carbon steel to avoid iron contamination. Open one package at a time and reseal unused wire. If the wire has been exposed to moisture, bake TIG rods at 150°C for 1 hour before use.
Available Forms & Packaging of Hastelloy G-30 Welding Wire
Check out our full selection of Hastelloy G-30 welding wire, which comes in several diameters and package types to fit your needs.
| Product Form | Diameter / Specifications | Packaging Details |
|---|---|---|
| TIG Rods | Straight-cut rods: 914 mm (36″) length | 5 kg and 10 kg Tubes |
| MIG Spools | Precision-wound spools | 15 kg (33 lb) Spools |
| Automated Welding | Coils and Reels | Suited for continuous automated systems |
| Special Packaging | Export-grade options | Vacuum-sealed inner packaging and wooden cases (Available on request) |
How to Order Hastelloy G-30 Welding Wire from Nicorex Alloys
Please provide the following 10 details to procure the Hastelloy G-30 Welding Wire from Nicorex Alloys
- Wire Type — GTAW / GMAW Solid Wire for Nickel-Chromium-Molybdenum Alloy Welding (ERNiCrMo-11)
- Size — 1.2mm (GMAW spools) / 1.6mm / 2.4mm / 3.2mm (GTAW cut lengths) — specify form
- Current Type — DCEN (GTAW) / DCEP (GMAW) — specify process and diameter
- Welding Position — All Positions — specify process and positional requirements
- Material Grade — Hastelloy G-30 Welding Wire / UNS N06030 / AWS A5.14: ERNiCrMo-11 / W.Nr. 2.4603
- Quantity — Number of spools/packs or total weight in kg
- Standard — AWS A5.14 / ASME SFA 5.14 (ERNiCrMo-11), EN ISO 18274: S Ni 6030, ASME Section IX
- Documentation — MTC EN 10204 3.1/3.2, PMI Report, Weld Metal Composition Report, Mechanical Properties Report, TPI Certificate
- Packaging — Vacuum-sealed foil bag with silica gel desiccant, ISPM 15 compliant export cartons with full labelling
- Delivery Destination — Domestic / International (specify port of discharge or delivery address)
Frequently Asked Questions
What is the Price of Hastelloy G-30 (ERNiCrMo-11) Welding Wire per kg in India?
Hastelloy G-30 is a speciality filler metal, so pricing varies with diameter, form, order volume, and nickel market conditions. Contact Nicorex Alloys with your specific requirements for a competitive per-kg quotation.
Why does Hastelloy G-30 have 30% chromium — the highest of any Hastelloy filler?
30% Cr maximises the thickness and stability of the passive oxide film in oxidising acids such as HNO₃, H₃PO₄, and FeCl₃ solutions. G-30 sacrifices Mo for Cr to dominate oxidising environments.
Can ERNiCrMo-11 (G-30) be Used as an Overmatching Filler for 254 SMO or AL-6XN?
Yes. G-30 with 30% Cr and 5% Mo overmatches both 254 SMO (20Cr-6Mo) and AL-6XN (21Cr-6Mo) in Cr content, giving the weld superior oxidising corrosion resistance.
Is ERNiCrMo-11 Suitable for Super Duplex 2507 Welding?
Yes. G-30 is suitable for duplex grades, including 2507 (25Cr-7Mo). The 30% Cr deposit exceeds the base metal’s Cr level, so the weld won’t be the preferential corrosion site in oxidising media.
Why is G-30 not recommended for Reducing Acid Service (HCl, H₂SO₄)?
G-30 has only 5% Mo (vs 16% in C-276 and 28.5% in B-3). Molybdenum is the primary element that resists reducing acids. In HCl or reducing H₂SO₄, G-30 corrodes significantly faster than B-3 or C-276 filler metals.
What ASTM Specifications does Hastelloy G-30 Base Metal Cover?
The base alloy (UNS N06030) is covered by ASTM B581 (rod/bar), B582 (plate/sheet/strip), B619 (welded pipe), B622 (seamless pipe/tube), and B626 (welded tube).
Does Nicorex Alloys Stock ERNiCrMo-11 TIG Rods and MIG Spools?
Yes. Nicorex Alloys maintains ready stock of ERNiCrMo-11 in TIG straight-cut rods and MIG spools. Contact us for current inventory, pricing, and estimated lead times for non-stock diameters.
What Industries use Hastelloy G-30 Welding Wire most frequently?
The main users are fertiliser plants (for phosphoric acid evaporation), chemical processing (for nitric acid reactors), stainless steel pickling (for HNO₃/HF lines), pulp and paper (for bleach plant piping), and fabricators joining 6Mo stainless or super duplex 2507 assemblies.