AWS Class ENiCr3T1-1/T1-4 Flux Core
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ENiCr3T1-1/T1-4 Flux Cored Wire Supplier in Mumbai, India
Nicorex Alloys is a Mumbai-based ISO9001/14001-certified supplier and stockist of ENiCr3T1-1/T1-4 flux cored wire, classified under AWS A5.34/ASME SFA 5.34 with UNS designation W86082. We supply high-quality welding solutions to India’s chemical and power sectors, ensuring your projects meet rigorous durability and performance standards consistently.
The Alloy 82T-1, SelectAlloy 82-AP, and Executive 82 AP FC are gas-shielded, all-position nickel-chromium-iron tubular electrodes that deposit NiCr-3 (Alloy 82) chemistry at 2-4× higher rates than GTAW solid wire (ERNiCr-3) or SMAW covered electrode (ENiCrFe-3). The nominal weld deposit contains 72% Ni, 20% Cr, 3% Mn, and 2.5% Nb+Ta, with iron held to 3.0% max. In the AWS designation, E stands for electrode, NiCr3 identifies the nickel-chromium alloy group, T denotes tubular/flux-cored construction, 1 signals all-position capability, and the suffix (-1 for 100% CO₂ and -4 for 75-80% Ar/CO₂) defines the shielding gas. Niobium at 2.0-3.0% stabilises grain boundaries against sensitisation, while low iron keeps the weld deposit resistant to primary water stress corrosion cracking.
Available in 0.045” (1.2 mm) and 1/16” (1.6 mm) diameters on 15 kg spools and drums, this wire serves dissimilar metal joints between Inconel 600/601/690, Incoloy 800/800H/800HT, carbon steels, and stainless steels. It covers petrochemical furnace fabrication, nuclear primary circuit piping, LNG cryogenic systems, and NiCr overlay cladding. Every spool leaves our Mumbai facility with an EN 10204 Type 3.1 Mill Test Certificate, batch-level traceability, and DNV, Lloyds, ABS, BV, and TÜV can approve nuclear and offshore procurement.
ENiCr3T1-1/T1-4 Flux Core Specifications
The complete specification for ENiCr3T1-1/T1-4, covering AWS classification, shielding gas, positional capability, and packaging, is given below.
| AWS Specification | AWS A5.34 / A5.34M |
|---|---|
| ASME SFA | SFA 5.34 |
| UNS Number | W86082 |
| Welding Process | FCAW-G (Gas-Shielded Flux Cored Arc Welding) |
| Polarity | DCEP (Direct Current Electrode Positive) |
| Shielding Gas |
T1-1: 100% CO₂ at 30–50 CFH T1-4: 75–80% Argon / balance CO₂ at 40–50 CFH |
| Welding Positions | All (flat, horizontal, vertical-up, overhead) for T1-1/T1-4 |
| Available Diameters | 0.045” (1.2 mm), 1/16” (1.6 mm) |
| Wire Type | Gas-shielded tubular (flux-cored) electrode |
| Max Service Temperature | ~482°C (900°F) |
| Packaging | 25 lb spools, 33 lb spools, 60 lb coils, 500/800/900 lb drums |
Chemical Composition of ENiCr3T1-1/T1-4 Weld Deposit (AWS SFA 5.34 Requirements)
The chemical composition of the ENiCr3T1-1/T1-4 weld deposit, per AWS/ASME SFA 5.34, is given briefly in the following table:
| Element | Nickel (Ni) | Chromium (Cr) | Niobium (Nb+Ta) | Manganese (Mn) | Iron (Fe) | Carbon (C) | Silicon (Si) | Titanium (Ti) | Sulphur (S) | Phosphorus (P) | Copper (Cu) | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AWS Limit (wt%) | 67.0 min | 18.0-22.0 | 2.0-3.0 | 2.5-3.5 | 3.0 max | 0.10 max | 0.50 max | 0.75 max | 0.015 max | 0.03 max | 0.50 max | 0.50 max |
| Typical (wt%) | ~70-72 | ~19-21 | ~2.5-2.75 | ~3.0 | ~1-2 | ~0.03-0.05 | ~0.30-0.43 | ~0.30-0.38 | <0.01 | <0.02 | <0.10 | — |
| Metallurgical Function | Austenitic matrix; high-temperature stability | Oxidation and corrosion resistance | Carbide stabiliser; prevents sensitisation | Deoxidiser; arc stabiliser; hot cracking resistance | Controlled to maintain Ni-alloy character | Low C reduces carbide precipitation risk | Deoxidiser; kept low for ductility | Grain refiner; supplementary carbide stabilisation | Hot cracking prevention | Hot cracking prevention | Controlled impurity | Sum of minor trace elements |
Austenite, ductile from cryogenic to high temperatures, is produced by at least 67% nickel. 18-22% chromium provides corrosion and oxidation resistance. Niobium at 2-3% binds carbon as NbC before chromium depletes grain boundaries, preventing sensitisation. Sulphur and phosphorus below 0.015% and 0.03% avoid solidification cracking.
Mechanical Properties of ENiCr3T1-1/T1-4 Weld Deposit (As-Welded Condition)
The mechanical properties of ENiCr3T1-1/T1-4 weld deposit in the as-welded condition, per AWS/ASME SFA 5.34, are as follows:
| Property | Tensile Strength | Yield Strength | Elongation (%) | Charpy V-Notch (CVN) | Post-Weld Heat Treatment |
|---|---|---|---|---|---|
| AWS Requirement | ≥550 MPa (80 ksi) | Not specified by AWS | ≥25% | Not specified by AWS | Not required (standard) |
| Typical Result (As-Welded) | ~620-669 MPa (90-97 ksi) | ≥ 360 (54 ksi) | ~43% | ~109 J (78 ft-lbf) at -196°C | — |
The tensile strength is 13% higher than the minimum AWS specification, meeting code requirements adequately. For LNG and liquid nitrogen service, the 109 J Charpy V-Notch at -196°C is tough. In most circumstances, PWHT is unnecessary.
Base Metal Compatibility for ENiCr3T1-1/T1-4 Flux Cored Wire
The following is a technical specification table for ENiCr3T1-1/T1-4 flux-cored wire, formatted for industrial clarity and scannability.
| Category | Specification / Data |
|---|---|
| AWS Classification | ENiCr3T1-1 / ENiCr3T1-4 |
| ASME Section IX F-No. | F-43 (Covers all F-43 fillers per QW-433) |
| ASME Section IX A-No. | A-No. 41 (Nickel-Base Weld Metal: Ni-Cr-Fe) |
| Primary Base Metals | Inconel 600, 601, 690; Incoloy 800, 800H, 800HT |
| Dissimilar Joints | P-1 to Inconel; P-4/P-5A to Stainless/Nickel; P-8 to P-43/P-45 |
| Special Applications | Corrosion-resistant overlay cladding; clad plate repair |
ENiCr3T1-1/T1-4 Flux Cored Wire Welding Parameters
ENiCr3T1-1/T1-4 is available in two standard diameters. Recommended FCAW-G parameters for each are listed below.
| Parameter | 0.045” / 1.2 mm | 1/16” / 1.6 mm |
|---|---|---|
| Process | FCAW-G (Gas Shielded) | FCAW-G (Gas Shielded) |
| Voltage | 25-26 V | 26-27 V |
| Amperage | 150-200 A | 200-250 A |
| Wire Feed Speed | 290-400 ipm | 190-275 ipm |
| Electrical Stick-Out | 12 mm (½”) | 12 mm (½”) |
| Polarity | DCEP | DCEP |
| Welding Positions | All positions | All positions |
| Interpass Temperature | Max 150°C (300°F) | Max 150°C (300°F) |
| Preheat | Not generally required | Not generally required |
Diameters, Spool Sizes & Packaging
Nicorex Alloys stocks ENiCr3T1-1/T1-4 in the diameters and packaging listed below. All sizes ship with MTC 3.1 per EN 10204.
| Diameter | Spool / Packaging Options |
|---|---|
| 0.045” (1.2 mm) | 15 kg (33 lb) spools, 27.2 kg (60 lb) coils, 500/800/900 lb drums |
| 1/16” (1.6 mm) | 15 kg (33 lb) spools, 27.2 kg (60 lb) coils, 500/800/900 lb drums |
Contact us for current availability and pricing.
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Industries & Applications of ENiCr3T1-1/T1-4 Flux Core Welding Wire
All-position FCAW capability, cryogenic toughness, and high-temperature oxidation resistance make ENiCr3T1-1/T1-4 a preferred consumable across the following industries.
- Alloy 800 heat exchanger tubes, reactor vessels, and nickel-clad base metal process pipework use ENiCr3T1-1/T1-4 for acid and sulphur applications. FCAW welds large-diameter pipework and vessel shells efficiently.
- Boiler tubing, superheater coils, and nuclear reactor loop piping where Alloy 600 becomes carbon steel. The steam generator nozzle buttering overlays are traceable to ASME Section III.
- NiCrFe, desalination plant evaporator tubesheets, and joints must resist chloride stress corrosion cracking. FCAW's portability complements yard and site welding.
- Oxidising acids, halogenated chemicals, and high-temperature conditions do not affect the materials. Incoloy 800HT is often used with carbon steel flanges.
- Gas turbine exhaust duct fabrication and repair, along with structural components, where creep-rupture strength and oxidation resistance are critical.
- Cold box assemblies, LNG terminal infrastructure, and liquid nitrogen transfer systems. Charpy toughness at -196°C is 109 J (78 ft-lbf), meeting the strictest low-temperature requirements.
- Overlay cladding on carbon steel vessels exposed to chloride or bleach environments. NiCr-3 deposit resists pitting and stress corrosion cracking in these media.
- Joining Alloy 600/601 furnace components, retorts, and radiant tubes operating to 788°C (1450°F). FCAW cuts arc time on thick-section furnace assemblies.
Storage, Handling and Shelf Life for ENiCr3T1-1/T1-4 Flux Cored Wire
Store unopened spools in vacuum-sealed packaging at room temperature and dry. Store in sealed packaging in a dry environment. If exposed to high humidity, discard or consult the manufacturer. Moist nickel alloy FCAW deposits are porous; flux-cored wire cannot be re-baked like SMAW electrodes. Discard contaminated spools.
Handle spools with clean gloves, as finger oils introduce hydrogen porosity in nickel alloy welds. Use dedicated nickel alloy tooling only; carbon steel brushes and grinding discs contaminate welds. VACUUM-SEALED Shelf life is 12 months. Nicorex supplies vacuum-sealed spools with MTC 3.1 documentation.
How to Order ENiCr3T1-1/T1-4 Flux Core from Nicorex Alloys
To place an order for ENiCr3T1-1/T1-4 Flux Core, provide the following 8 details:
- AWS Classification: ENiCr3T1-1 ($CO_2$) or ENiCr3T1-4 ($Ar/CO_2$) - or BOTH.
- Position: T1 (all positions) or T0 (flat/horizontal only).
- Diameter: 0.045" (1.2 mm) or 1/16" (1.6 mm).
- Quantity: Specify the requirement in kg or lb.
- Packaging: 25 lb spool, 33 lb spool, 60 lb coil, or drum.
- Cobalt Restriction: Specify Co 0.10% max if required for nuclear applications.
- Certification: MTC 3.1 provided per EN 10204.
- Third-party Approvals: Specify if needed (DNV, Lloyds, ABS, BV, TÜV, or nuclear QA).
Frequently Asked Questions
What does the T1-1 vs T1-4 Suffix Mean in ENiCr3T1-1/T1-4?
The -1 suffix requires 100% CO₂ shielding, while -4 requires 75-80% argon with the balance CO₂. Wires classified under both designations may use either gas. Argon-mix produces lower spatter and a smoother bead for shop work. Pure CO₂ is more economical for field use.
Which Base Metals Can ENiCr3T1-1/T1-4 Flux Cored Wire Weld?
Inconel 600, 601, and 690; Incoloy 800, 800H, and 800HT; themselves or each other; and dissimilar joints between these nickel alloys and carbon steels, Cr-Mo steels, or austenitic stainless steels. Overlay cladding on carbon steel is also supported.
Why is FCAW Format Preferred Over Covered Electrode (SMAW) for Alloy 82 Welding?
FCAW delivers 3-4× higher deposition rates than manual stick welding. Continuous wire feed removes stub losses, slag peels cleanly, and spatter is minimal. For large fabrications and overlay work, these gains cut arc time and labour cost.
Yes, both are F‑6 / A‑8, so E347T1 can replace E308LT1 on a WPS without requalification for elevated‑temperature service.
Is ENiCr3T1-1/T1-4 Suitable for Cryogenic Service Applications?
Yes. Charpy V-notch (CVN) typically is 109 J (78 ft-lbf) at -196°C (-320°F). This applies to liquid nitrogen service. It is important that the interpass temperature is kept at a maximum of 150°C, as well as ensuring that the Welding Procedure Specification (WPS) is qualified at the design temperature.
What Role does Niobium (Columbium) Play in ENiCr3T1-1/T1-4 Weld Metal?
Niobium (Nb), called columbium (Cb) in older American references, is 2.0-3.0 wt%. Stable NbC carbides occur before chromium depletes at grain boundaries, limiting sensitisation and intergranular corrosion in long-term elevated-temperature use.
Can ENiCr3T1-1/T1-4 Be Used for Nuclear Reactor Component Welding?
Yes. The wire is used for Alloy 600 reactor vessel nozzles, steam generator tubes, and primary coolant loop piping under ASME Section III. Nuclear procurement requires MTC 3.1 per EN 10204, full heat/lot traceability, and optional cobalt restriction to 0.10% max.
What is the Difference Between ENiCr3T1-1/T1-4 (Flux Cored) and ERNiCr-3 (Solid Wire)?
Alloy 82 (UNS W86082) is shared. Strong GTAW/GMAW wire ERNiCr-3 is suited for narrow sections and root passes. Medium-to-heavy sections of ENiCr3T1-1/T1-4 flux-cored FCAW wire have higher deposition rates and self-supporting slag. Configuration and production targets dictate selection.
What are the Typical Welding Parameters for 1.2 mm ENiCr3T1-1/T1-4 Flux Cored Wire?
For 1.2 mm (0.045”) wire: voltage 25-26 V, current 150-200 A, wire feed speed 290-400 ipm, ESO 12 mm, DCEP polarity. Use 100% CO₂ (T1-1) or 75% Ar / 25% CO₂ (T1-4). Hold interpass at 150°C max.
Does ENiCr3T1-1/T1-4 Require Post-Weld Heat Treatment (PWHT)?
Not in most applications. As-welded mechanical attributes meet most industrial codes. Nickel alloy-carbon steel welds may require post-weld heat treatment (PWHT). It should be done cautiously because it could damage the nickel weld.
What Documentation does Nicorex Alloys Provide with ENiCr3T1-1/T1-4 Flux Cored Wire?
Each spool ships with an MTC 3.1 per EN 10204, tracing chemical composition and mechanical properties to heat/lot number. Nicorex ships items from Mumbai after batch-testing them against AWS/ASME SFA 5.34 under ISO 9001 and ISO 14001 certification.