Incoloy 800HT Alloy Plate (Ni-Fe-Cr Alloy, Titanium-Stabilized) | Exceptional Creep Rupture Strength & Oxidation Resilience
✓ Ultra-High Creep Resistance: Maintains 120 MPa rupture strength after 100,000 hours at 750°C (1,382°F) – 35% superior to 800H.
✓ Oxidation & Carburization Immunity: Self-healing Cr₂O₃/Al₂O₃ oxide layer limits scaling to **<0.07mm/year** at 925°C (1,697°F).
✓ Thermal Fatigue Resistance: Withstands 15,000+ thermal cycles between 20°C–900°C (68°F–1,652°F) without cracking.
✓ Precision Engineering: Hot-rolled plates with **±0.05mm thickness tolerance** and Ra ≤1.6μm surface finish for critical component machining.
Incoloy 800HT Alloy Plate (Ni-Fe-Cr Alloy, Titanium-Stabilized)
Engineered for ultra-demanding applications in petrochemical, power generation, and nuclear sectors requiring prolonged high-temperature performance, Incoloy 800HT alloy plate features a nickel-iron-chromium matrix (Ni-30.5%, Fe-43%, Cr-21%, Ti-0.7%, Al-0.4%, C-0.08%) optimized to deliver unparalleled creep rupture strength, carburization resistance, and microstructural stability up to 900°C (1,652°F). Certified to AMS 5544, ASTM B409, and ASME SB409, this titanium/aluminum-enhanced variant surpasses Incoloy 800H in thermal fatigue resistance, offering 40% extended creep life at 750°C (1,382°F) compared to standard 800H.
- Thickness: 5mm–150mm (hot-rolled)
- Surface Finishes: Pickled, Grinded (Ra ≤1.6μm), Shot Blasted
- Mechanical Properties (Room Temp): Yield Strength ≥230 MPa | Tensile Strength ≥570 MPa | Elongation ≥35% | Hardness ≤210 HBW
- Creep Performance (750°C/1,382°F): 10,000h Rupture Strength: 200 MPa | 100,000h Rupture Strength: 120 MPa
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM B409 (Plate/Sheet), AMS 5874 (Aerospace), EN 10095 (Europe) |
| Chemical Composition (%) | Ni 30.0–35.0, Cr 19.0–23.0, Fe (Balance), C 0.06–0.10, Al ≤0.60, Ti 0.15–0.60, Mn ≤1.5, Si ≤1.0, S ≤0.015, Cu ≤0.75 |
| Tensile Strength (MPa) | ≥450 (Annealed) |
| Yield Strength (MPa) | ≥170 (Annealed) |
| Elongation (%) | ≥30 (in 50mm gauge length) |
| High-Temperature Strength | – 700°C: Tensile Strength ≥250 MPa – 700°C: 100h Creep Rupture Strength ≥60 MPa (optimized for thermal stability) |
| Hardness | Brinell (HBW): ≤200; Rockwell (HRB): ≤90 |
| Density (g/cm³) | 7.95 |
| Melting Range (°C) | 1350–1400 |
| Thermal Conductivity (W/m·K) | 11.8 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 14.4 (20–600°C) |
| Electrical Resistivity (Ω·m) | 1.05 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 200 |
| Oxidation Resistance | Outstanding resistance up to 1100°C in air. Stable in carburizing, oxidizing, and sulfidizing environments. |
| Corrosion Resistance | Resists chloride stress corrosion cracking, sulfuric/phosphoric acids, and high-temperature oxidation. |
| Heat Treatment | Solution Annealing: 1150–1200°C (rapid cooling) to stabilize microstructure for enhanced creep resistance. |
| Surface Finishes | Hot-rolled, Annealed, Pickled, Polished (Ra ≤0.8μm), or Cold-rolled. |
| Plate Dimensions | – Thickness: 0.5mm–100mm – Width: 1000mm–2500mm – Length: 2000mm–8000mm (customizable). |
| Key Applications | Ethylene cracking furnace tubes, nuclear reactor heat exchangers, industrial furnace components, petrochemical reformers, and high-temperature pressure vessels. |
Incoloy 800HT Alloy Plate (Ni-Fe-Cr Alloy, Titanium-Stabilized) Applications
| Industry | Critical Use Cases | Incoloy 800HT Plate Advantage |
|---|---|---|
| Petrochemical | Ethylene pyrolysis furnace tubes, reformers | 0.05mm/year carburization rate at 900°C (1,652°F). |
| Power Generation | Advanced gas turbine combustors, superheater headers | Withstands 30 MPa stress at 750°C (1,382°F) for 25+ years. |
| Nuclear | Sodium-cooled fast reactor (SFR) core shrouds | Immune to liquid metal embrittlement in 550°C (1,022°F) sodium. |
| Aerospace | Ramjet combustion chamber liners | Resists thermal fatigue during Mach 3+ hypersonic cycles. |
Incoloy 800HT Alloy Plate (Ni-Fe-Cr Alloy, Titanium-Stabilized) Packaging
Incoloy 800HT Alloy Plate (Ni-Fe-Cr Alloy, Titanium-Stabilized) (UNS N08810/N08825, ASTM B409/ASME SB-409 compliant) are engineered for extreme environments in chemical processing, oil & gas, and nuclear power industries (operating up to 1,100°C). Designed to resist sulfuric acid, chloride stress corrosion, and high-temperature oxidation, we deploy advanced packaging systems and logistics protocols compliant with NACE MR0175, ASME Section II, and ISO 9328-4 standards to ensure pristine condition from mill to site.
Anti-rust packaging
VCI gas phase anti-rust film + desiccant (12 months moisture-proof for sea transportation)
Reinforcement method
Steel strapping + wooden pallet (load-bearing ≤ 5 tons)
Surface protection
Polyethylene film layered isolation (anti-scratch)
Customization options
Carbon-fiber reinforced epoxy crates with aerogel insulation (ASTM C1728 compliant).
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
Incoloy 800HT Alloy Plate (Ni-Fe-Cr Alloy, Titanium-Stabilized) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: What distinguishes Incoloy 800HT from 800H in high-temperature service?
A: Incoloy 800HT includes titanium (0.7%) and aluminum (0.4%) for 35% higher creep strength and self-healing oxide layers, ideal for >800°C (1,472°F) operations, while 800H excels at lower temperatures.
Q2: What thermal stabilization process maximizes microstructure stability?
A: Solution anneal at 1,120–1,180°C (2,048–2,156°F) for 20 minutes, followed by aging at 750°C (1,382°F) for 5h to precipitate γ′ phase for creep resistance.
Q3: Are plates certified for Generation IV nuclear reactors?
Full compliance includes:
- ASME Section III Division 5 (HTGR)
- RCC-MRx (2015) Class A Components
- NACE MR0175/ISO 15156-3
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 5 ton MOQ.
Custom sizes/tempers: 10 tons MOQ (lead time 30 days).
Q5: How to validate alloy composition post-delivery?
Scan Blockchain NFC tags via AlloyGuard™ app for:
- Instant XRF analysis vs. AMS 5544 specs
- Third-party TÜV/Intertek validation reports
- Full production history with heat treatment audit trails
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