Alloy 800HT (Welding),Incoloy 800HT Rod,N08811,E FORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA15，American Specs:AMS 5766 Bar and Forgings AMS 5871 Sheet, Strip and Plate ASTM B408 ASTM B564 ASTM A240 ASTM A480，German Specs:WS 1.4876 WS 1.4958 WS 1.4959

**Technical Datasheet: Alloy 800HT / Incoloy 800HT Welding Rod (UNS N08811)** --- ### **1.0 Product Overview** **Alloy 800HT Welding Rod** (commercially known as **Incoloy 800HT Welding Rod**, UNS **N08811**) is a premium welding consumable specifically formulated for joining and repairing Alloy 800HT components in high-temperature service environments. Designed to match the base metal's enhanced chemistry with controlled carbon content (0.06–0.10%) and elevated aluminum+titanium (Al + Ti ≥ 1.20%), this welding rod delivers superior creep rupture strength, oxidation resistance, and microstructural stability at temperatures up to 815°C (1500°F). Available in both bare rod and covered electrode forms. --- ### **2.0 Chemical Composition (wt%)** | Element | ERNiCrFe-8 (AWS A5.14) | ENiCrFe-8 (AWS A5.11) | Role in Weld Metal | |---------|--------------------------|------------------------|---------------------| | **Nickel (Ni)** | ≥62.0 | ≥62.0 | Austenitic matrix formation | | **Chromium (Cr)** | 28.0–32.0 | 28.0–32.0 | Oxidation resistance | | **Iron (Fe)** | 7.0–11.0 | 7.0–11.0 | Balance element | | **Carbon (C)** | 0.08–0.12 | 0.08–0.12 | Creep strength enhancement | | **Manganese (Mn)** | 2.5–3.5 | 2.5–3.5 | Deoxidation | | **Silicon (Si)** | 0.10–0.50 | 0.10–0.50 | Wetting and fluidity | | **Aluminum (Al)** | 0.10–0.30 | 0.10–0.30 | Deoxidation | | **Titanium (Ti)** | 0.10–0.30 | 0.10–0.30 | Stabilization | | **Niobium (Nb)** | 0.50–1.0 | 0.50–1.0 | Hot cracking resistance | | **Phosphorus (P)** | ≤0.015 | ≤0.015 | Impurity control | | **Sulfur (S)** | ≤0.015 | ≤0.015 | Impurity control | --- ### **3.0 Physical Properties** | Property | Value | Condition | |----------|-------|-----------| | **Density** | 8.0 g/cm³ | RT | | **Melting Point** | 1375°C | — | | **Thermal Expansion** | 16.8 × 10⁻⁶ /K | 20–650°C | | **Thermal Conductivity** | 14.5 W/m·K | 21°C | | **Electrical Resistivity** | 120 μΩ·cm | 21°C | | **Modulus of Elasticity** | 195 GPa | RT | --- ### **4.0 Mechanical Properties** **As-Welded Condition (Typical)** - **Tensile Strength:** 550–650 MPa - **Yield Strength (0.2% Offset):** 300–400 MPa - **Elongation:** 30–40% - **Impact Toughness:** 80–120 J (Charpy V-notch, 21°C) **Post-Weld Heat Treated Condition** - **Tensile Strength:** 500–600 MPa - **Yield Strength:** 250–350 MPa - **Elongation:** 35–45% --- ### **5.0 International Standards** | Standard Type | Standard Number | Description | |--------------|----------------|-------------| | **AWS** | A5.14 | ERNiCrFe-8 (Bare Rod) | | **AWS** | A5.11 | ENiCrFe-8 (Covered Electrode) | | **ASME** | SFA-5.14 | ERNiCrFe-8 (BPVC Section II) | | **ASME** | SFA-5.11 | ENiCrFe-8 (BPVC Section II) | | **ISO** | 18274 | NiCr29Fe8 | | **EN** | 1600 | Ni 6082 | --- ### **6.0 Product Specifications** **Bare Rod (ERNiCrFe-8)** - **Diameter Range:** 1.6–6.0 mm - **Length:** 1000 mm standard - **Surface Finish:** Bright or cleaned - **Packaging:** Bundle or individual packing **Covered Electrode (ENiCrFe-8)** - **Diameter Range:** 2.0–6.0 mm - **Length:** 350 mm, 450 mm - **Coating Type:** Lime-based (basic) - **Packaging:** Hermetic containers --- ### **7.0 Applications** **Welding Processes** - Gas Tungsten Arc Welding (GTAW) - Shielded Metal Arc Welding (SMAW) - Plasma Arc Welding (PAW) **Industry Applications** - Petrochemical reformer furnaces - Ethylene cracking coils - Power generation boilers - Nuclear components - Chemical process vessels --- ### **8.0 Welding Characteristics** **Operating Parameters** | Process | Current | Polarity | Shielding Gas | |---------|---------|----------|---------------| | **GTAW** | 80–180 A | DCEN | Argon/Helium | | **SMAW** | 90–160 A | DCEP | — | **Welding Positions** - All positions (covered electrodes) - Flat and horizontal (bare rod) --- ### **9.0 Quality Assurance** **Testing & Certification** - AWS A5.14/A5.11 compliant - Chemical analysis certification - Mechanical testing reports - Radiographic test qualified **Storage & Handling** - Dry storage conditions - Electrode baking: 300–350°C - Low humidity environment --- ### **10.0 Advantages** - Matched properties with Alloy 800HT base metal - Excellent high-temperature performance - Superior creep and oxidation resistance - Code compliance for critical applications --- **Contact Information** For technical specifications and welding procedures, contact our technical department.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1924 gallon liquid totes Special package is available on request.