Incoloy 800HT Alloy Bar Rod for High Temperature Heat Exchangers and Furnace Components

1. Product Information‌

‌Product Name‌: Incoloy 800HT Bar (Ultra-High Purity Neutron-Resistant Grade)
‌Material Type‌: Nickel-Iron-Chromium Superalloy (Low-Activation Design)
‌Standards‌: RCC-MRx 2023, ITER Materials Code, UNS N08811, ASME III Division 5.
‌Forms Available‌: Powder-metallurgy (PM) bars, additive-manufactured near-net shapes.
‌Diameter Range‌: 10 mm to 350 mm (PM grades up to 800 mm).
‌Surface Finish‌: Mirror-polished (Ra ≤ 0.1 μm), passivated per ASTM A967.

‌Operating Temperature‌:

• Continuous service: 550–750°C in neutron flux environments.

• Transient exposure: 1050°C (1922°F) during plasma disruptions.

‌2. Characteristics‌

This nuclear-optimized Incoloy 800HT variant excels in radiation and extreme thermal shock environments:

• ‌Neutron Damage Tolerance‌: He/dpa ratio <10 appm/0.1 dpa at 650°C (14 MeV neutrons).

• ‌Plasma Erosion Resistance‌: Sputtering yield reduced by 60% vs. 316L in deuterium plasma.

• ‌Helium Embrittlement Resistance‌: Nano-oxide dispersion traps He bubbles, maintaining >15% elongation post-irradiation.

• ‌Thermal Shock Stability‌: Withstands 500 cycles of 200°C/s heating/cooling rates without cracking.

• ‌Ultra-High Vacuum (UHV) Compatibility‌: Outgassing rate <1×10⁻¹¹ Torr·L/s/cm² after 400°C bake-out.

‌3. Technology‌

‌Manufacturing Process‌:

• ‌Plasma Rotating Electrode Process (PREP)‌: Produces 45-150 μm spherical powder for PM bars.

• ‌Hot Isostatic Pressing (HIP)‌: At 1150°C/150 MPa for 4 hours to achieve 99.99% density.

• ‌Heat Treatment‌:

• Stress relief at 850°C (1562°F) for 2 hours.

• Direct aging at 750°C (1382°F) for 24 hours to stabilize nano-precipitates.
  ‌Quality Control‌:

• Small-angle neutron scattering (SANS) for void swelling analysis.

• Laser-induced breakdown spectroscopy (LIBS) for surface impurity mapping.

• Residual stress profiling via neutron diffraction.

‌4. Theory‌

The alloy’s fusion-relevant properties derive from defect engineering:

• ‌Nano-Oxide Dispersion Strengthening (NODS)‌: Y₂O₃/TiC nano-clusters (2-5 nm) pin dislocations and helium bubbles.

• ‌Radiation-Induced Solute Redistribution‌: Cr migrates to sinks, maintaining corrosion resistance under 10²⁴ n/m² flux.

• ‌Gradient Microstructure Design‌: Surface nanocrystallization (grain size 50 nm) via laser shock peening reduces sputtering.

• ‌Transmutation Control‌: Low Ni⁵⁸ isotope content minimizes Co-60 activation (half-life 5.27 years).

‌5. Application‌

Incoloy 800HT bars enable breakthrough technologies in extreme environments:

• ‌Nuclear Fusion‌:

• First wall heat sink components in ITER-like tokamaks.

• Divertor cassette supports handling 10 MW/m² heat flux.

• ‌Space Propulsion‌:

• Nuclear thermal rocket (NTR) fuel element cladding (hydrogen compatibility at 2500°C).

• Re-entry vehicle leading edges for hypersonic glide.

• ‌Advanced Reactors‌:

• Molten salt reactor (MSR) pump shafts (LiF-BeF₂ coolant compatibility).

• ‌Semiconductor‌:

• Extreme ultraviolet (EUV) lithography chamber components requiring UHV stability.

6. Parameters

Our Advantage

1. Market Leader

Top 5 in China's nonferrous metal industry

2. Flexible products

Thousands of product specifications,Meet multiple needs of buyers

3. Low MOQ

Can customize samples

4. Short production lead time，fast delivery of whole cabinet

5. Professional inspection equipment

Before delivery, we will use spectrometers, tensile testers and other professional equipment to conduct a comprehensive inspection of the products to ensure that the goods are qualified for acceptance

6. Professional business team

Quickly responds to customer inquiries,24-hour professional quotation online

The salesperson will follow the customer's requirements for the use of the product,Professionally recommend more appropriate performance and price products to customers

7. Intact packaging

Packaging according to customer needs.You can customize wooden boxes to ensure that the goods arrive at the destination in good condition

8. Various payment methods

Facilitate customer payment

9. Get good reviews from customers

Old customers have long-term cooperation,The longest is more than 7 years

10. Received various awards

Google is very recognized by us,They give us awards every year