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Incoloy 800HT High-Temperature Corrosion-Resistant Alloy Bar
A fully austenitic nickel-iron-chromium alloy bar designed for high-temperature/high-pressure environments, featuring exceptional stress corrosion resistance and mechanical properties.
- High-Temperature Stability:Long-term service capability above 500°C (930°F), with maximum oxidation resistance up to 1040°C (1900°F).
- Corrosion Resistance:Resists nitric acid, organic acids, and oxidizing salts. High Ni/Cr content ensures superior pitting and stress corrosion cracking (SCC) resistance.
- Processing Advantages:Supplied in annealed condition for optimized high-temperature strength; coarse grain structure (ASTM No. 5) enhances creep resistance.
Chemical Composition (wt%)
Element | Composition Range (%) | Function |
C | 0.06-0.10 | Controls sensitization and improves weldability |
Cr | 19.0-23.0 | Enhances pitting resistance and high-temperature oxidation resistance |
Ni | 30.0-35.0 | Core element for stress corrosion cracking (SCC) resistance |
Al+Ti | 0.85-1.20 | Stabilizes microstructure and optimizes high-temperature performance |
Other | S≤0.015, P≤0.035 | Low impurities ensure material purity |
Surface Treatment
- Delivery Condition:Solution annealed (1150°C water-quenched) + ground/turned finish, oxide-free surface guaranteed.
- Optional Treatments:Pickling & passivation (enhanced corrosion resistance), sandblasting (improved appearance).
Why Choose Us ?
- Strict QC:Vacuum induction melting (VIM) + electroslag remelting (ESR), composition tolerance ≤±0.5%.
- Full-Size Coverage:Bar diameter Φ10-300mm, custom lengths up to 6 meters.
- Technical Support:Welding guidance (recommended filler: ERNiCr-3) and post-weld heat treatment solutions.
Applications & Industries
Aerospace:
High-power density actuators.
Electronics:
Precision sensors & MEMS components.
Energy:
Magnetic coupling devices for turbines.
Frequently Asked Questions
Q1: Difference between Incoloy 800HT and 800H?
A: 800HT has lower carbon content (≤0.10%) and superior high-temperature creep resistance.
Q2: Suitable for hydrochloric acid environments?
A: Not recommended. Limited corrosion resistance in HCl/H₂SO₄; suggest Hastelloy alloys instead.
Q3: Minimum order quantity (MOQ)?
A: Small trial orders accepted; standard sizes readily available.
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