Alloy 800HT,Incoloy 800HT Strip,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 Strip (UNS N08811)** --- ### **1.0 Product Overview** **Alloy 800HT Strip** (commercially known as **Incoloy 800HT Strip**, UNS **N08811**) is a precision-engineered nickel-iron-chromium superalloy in thin-strip form, specifically designed for high-temperature applications requiring exceptional dimensional accuracy and superior thermal stability. With enhanced chemistry featuring controlled carbon content (0.06–0.10%) and elevated aluminum+titanium (Al + Ti ≥ 1.20%), this alloy delivers outstanding creep rupture strength and oxidation resistance at temperatures up to 815°C (1500°F). The strip product is ideal for automated manufacturing processes and precision components in demanding thermal environments. --- ### **2.0 Chemical Composition (wt%)** | Element | Content (ASTM B409/ASME SB-409) | Role | |---------|----------------------------------|------| | **Nickel (Ni)** | 30.0–35.0 | Austenitic matrix stability, oxidation/carburization resistance | | **Chromium (Cr)** | 19.0–23.0 | High-temperature oxidation and sulfidation resistance | | **Iron (Fe)** | ≥39.5 | Base element | | **Carbon (C)** | 0.06–0.10 | Enhanced carbide strengthening for creep resistance | | **Aluminum (Al)** | 0.25–0.60 | Forms stable protective oxide scale | | **Titanium (Ti)** | 0.25–0.60 | Stabilization and precipitation strengthening | | **Manganese (Mn)** | ≤1.50 | Improves hot workability | | **Silicon (Si)** | ≤1.00 | Enhances oxidation/carburization resistance | | **Sulfur (S)** | ≤0.015 | Minimized to avoid hot shortness | | **Copper (Cu)** | ≤0.75 | — | *Critical Requirement: Aluminum + Titanium ≥ 1.20% for UNS N08811* --- ### **3.0 Physical Properties** | Property | Metric Value | Imperial Value | Condition | |----------|--------------|----------------|-----------| | **Density** | 8.03 g/cm³ | 0.29 lb/in³ | RT | | **Melting Range** | 1354–1384°C | 2470–2520°F | — | | **Specific Heat** | 460 J/kg·K | 0.11 Btu/lb·°F | 21°C | | **Thermal Conductivity** | 15.6 W/m·K | 9.0 Btu·in/hr·ft²·°F | 21°C | | **Thermal Expansion** | 16.6 × 10⁻⁶ /K | 9.2 × 10⁻⁶ /°F | 20–650°C | | **Electrical Resistivity** | 116 μΩ·cm | 45.8 μΩ·in | 21°C | | **Modulus of Elasticity** | 201 GPa | 29.1 × 10⁶ psi | RT | | **Magnetic Permeability** | <1.05 | <1.05 | Essentially non-magnetic | --- ### **4.0 Mechanical Properties** **Standard Tempers & Properties** | Temper | Tensile Strength | Yield Strength | Elongation | Hardness | |--------|------------------|----------------|------------|----------| | **Annealed** | 450–550 MPa | 170–250 MPa | 35–45% | 70–80 HRB | | **¼ Hard** | 550–650 MPa | 350–450 MPa | 20–30% | 85–95 HRB | | **½ Hard** | 650–750 MPa | 500–600 MPa | 15–25% | 95–100 HRB | | **Full Hard** | 750–850 MPa | 650–750 MPa | 8–15% | 100+ HRB | **Elevated Temperature Performance** - **Maximum Service Temperature:** 815°C (1500°F) continuous - **Creep Strength:** Superior stress rupture properties - **Thermal Fatigue Resistance:** Excellent in cyclic conditions --- ### **5.0 International Standards** | Standard Type | Standard Number | Description | |--------------|----------------|-------------| | **UNS** | N08811 | Unified Numbering System | | **ASTM** | B409 | Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip | | **ASME** | SB-409 | Boiler and Pressure Vessel Code | | **EN/DIN** | 1.4959 | X8NiCrAlTi32-21 (Enhanced) | | **AMS** | 5872 | Aerospace Material Specification - Strip | | **ISO** | 6207 | Nickel alloy wrought products | --- ### **6.0 Product Specifications** **Dimensional Ranges** - **Thickness:** 0.05 mm to 2.0 mm (0.002" to 0.080") - **Width:** 20 mm to 600 mm (0.75" to 24") - **Length:** Coils up to 4000 meters, cut lengths available **Tolerances** - **Thickness:** ±0.005 mm for precision grades - **Width:** ±0.1 mm for slit edges - **Camber:** 1 mm per meter maximum - **Flatness:** 2 mm per meter maximum --- ### **7.0 Applications** **Electronics & Electrical** - High-temperature heating elements - Thermocouple compensation leads - Electrical resistance strips - Battery component substrates **Automotive & Aerospace** - Turbocharger heat shields - Exhaust system gaskets - Sensor mounting strips - Thermal management components **Industrial Furnace Components** - Radiation heat shields - Furnace curtain systems - Thermal barrier strips - High-temperature gaskets **Precision Instrumentation** - High-temperature sensor components - Instrumentation diaphragms - Pressure sensor elements - Temperature control devices **Chemical Processing** - Catalyst support grids - Filter elements and screens - Distillation column packing - Reactor internals --- ### **8.0 Fabrication Characteristics** **Forming & Stamping** - **Deep Drawing:** Excellent in annealed condition - **Stamping:** Suitable for high-speed operations - **Bend Radius:** 1t (annealed), 2t (hard tempers) - **Springback:** Controlled in tempered conditions **Joining Methods** - **Resistance Welding:** Excellent capability - **Laser Welding:** Precision joining - **Brazing:** Compatible with high-temperature alloys - **Adhesive Bonding:** With surface preparation **Heat Treatment** - **Solution Annealing:** 1120–1170°C (2050–2140°F) - **Stress Relieving:** 870–900°C (1600–1650°F) - **Atmosphere:** Bright annealing available --- ### **9.0 Quality Assurance** **Testing & Certification** - Mill Test Certificate 3.1 per EN 10204 - Chemical analysis certification - Mechanical properties verification - Dimensional compliance reports **Surface Finishes** - **2B Finish:** Standard cold-rolled finish - **BA Finish:** Bright annealed surface - **Matte Finish:** For improved adhesion - **Special:** Coated or plated finishes available **Special Testing** - High-temperature property verification - Surface roughness measurement - Grain size determination - Non-destructive testing as required --- ### **10.0 Advantages** - **Precision Dimensional Control:** Tight tolerances for automated manufacturing - **Superior High-Temperature Strength:** Enhanced creep resistance in thin sections - **Excellent Formability:** Suitable for complex stamping and forming operations - **Consistent Mechanical Properties:** Uniform characteristics throughout coil length - **Non-Magnetic Characteristic:** Essential for electronic applications - **Code Compliance:** Meets international standards for critical applications --- ### **11.0 Packaging & Handling** - Protective winding with interleaving - Waterproof and vapor-proof wrapping - Custom packaging for sensitive applications - Clean, dry handling environment required --- **Contact Information** For technical specifications, pricing, or custom strip requirements, please contact our technical sales team.

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 1917 gallon liquid totes Special package is available on request.