Incoloy 800 Plates | ASTM B409 UNS N08800 High-Temperature Reliability
Table of Contents:
When a thermal power plant in India watched its stainless 310 heat-exchanger plates bow and crack after just two seasons of 700–800°C service, the maintenance team switched to Incoloy 800 Plates and recorded over 4 years of continuous uptime with no creep deformation. The nickel–iron–chromium design of Incoloy 800 (UNS N08800) keeps strength and corrosion resistance even after 100,000 hours at elevated temperatures, making it a more reliable choice than common stainless steels for procurement heads, design engineers, fabricators and hardware suppliers in chemical, oil & gas, marine, pharma and power generation projects.
Incoloy 800 plates offer minimum tensile strength around 520–600 MPa and yield strength about 205–275 MPa with typical elongation ≥30%, providing a stable mechanical profile for long-term exposure between 600–950°C. The 800H (UNS N08810) and 800HT (UNS N08811) variants further increase creep-rupture strength through controlled carbon, aluminium and titanium content, achieving significantly higher rupture life than base 800 in boiler, reformer and superheater duty.
Aurico Alloys LLP operates as an affordable, authentic and trusted supplier, manufacturer and stockist of Incoloy 800 Plates, serving chemical, oil & gas, marine, pharma, power plants and hardware stores with EN 10204 3.1 Mill Test Certificates and global export support. As leading Incoloy 800 Plates supplier, stockist, exporter in India to abroad, the company supports OEMs with ready stock in Mumbai, custom-cut plates, and full ASTM/ASME compliance for project documentation.
Compared with SS 310, Incoloy 800 shows superior resistance to carburization, sulphidation and chloride stress-corrosion cracking, especially in refinery furnaces and nitric acid or hydrocarbon service where stainless often fails prematurely. This performance gap makes Alloy 800 a strategic upgrade for buyers seeking lower lifecycle cost rather than lowest initial plate price.
High-quality Incoloy 800 Plates ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grades | Incoloy 800, 800H, 800HT (UNS N08800 / N08810 / N08811) |
| Standards | ASTM B409, ASME SB409, ASTM B906, DIN 1.4876 |
| Thickness Range | 4.75 mm – 150 mm |
| Sheet/Plate Size | Approx. 1000–2500 mm width, up to 6000 mm length |
| Finishes | HR, CR, 2B, BA, No.1, Satin, Polished |
| Documentation | MTC 3.1, PMI, ASTM/ASME compliance, export packing |
| Price | INR 1,500 – 2,000 per kg. Indicative USD 18 – 24 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N08800 |
| Werkstoff / EN number | 1.4876 |
| EN designation | X10NiCrAlTi32-21 |
| Density | 7.94 g/cm3 |
| Melting range | 1357-1385 °C |
| Specific heat (0-100 °C) | 460 J/kg·°C |
| Magnetic permeability (200 oersted at 21 °C - annealed) | 1.014 |
| Magnetic permeability (200 oersted at 21 °C - hot-rolled) | 1.009 |
| Curie temperature | -115 °C |
| Plate, sheet and strip specification | ASTM B409 / B906 / AMS 5871 |
Identifiers and physical constants for Incoloy 800. A dash means no such designation is published for this grade.
Stock & Product Availability
As Incoloy 800 plate suppliers in Mumbai for electric heating element sheathing, Aurico supports OEM heater manufacturers with thin gauges and tight tolerances that match nuclear and industrial standards. ASTM B409 Incoloy 800 plates for nuclear steam generator components in India are available with high-temperature annealed 800H/800HT chemistry and grain size for enhanced creep strength.
Aurico’s role as a consolidated stockist keeps lead times low and enables project-based pricing for power, petrochemical and marine EPC contracts.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 30.0 | 35.0 |
| Chromium (Cr) | 19.0 | 23.0 |
| Iron (Fe) | 39.5 | — |
| Carbon (C) | — | 0.10 |
| Aluminium (Al) | 0.15 | 0.60 |
| Titanium (Ti) | 0.15 | 0.60 |
| Aluminium + Titanium (Al+Ti) | 0.30 | 1.20 |
| Manganese (Mn) | — | 1.5 |
| Silicon (Si) | — | 1.0 |
| Copper (Cu) | — | 0.75 |
| Sulfur (S) | — | 0.015 |
Composition limits for Incoloy 800. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Incoloy 800 / 800H / 800HT (Typical Plate Values) |
|---|---|
| Tensile Strength | ≈520–600 MPa (75,000–87,000 psi) |
| Yield Strength (0.2% offset) | ≈205–275 MPa (30,000–40,000 psi) |
| Elongation | ≥30% |
| Service Temperature | Up to about 1100°C in oxidizing/carburizing media |
| Key Feature | High creep and rupture strength at 600–950°C |
Applications & Benefits
Why this grade
Incoloy 800 is a 32% nickel, 21% chromium alloy on an iron balance. It is the general-purpose member of the family for heat and corrosion resistance up to about 650°C, and the least expensive of the 800 series. Above that temperature its creep strength falls away and 800H or 800HT applies instead.
- Power & Nuclear: ASTM B409 Incoloy 800 plates for nuclear steam generator components in India and superheater/reheater tubing deliver stable creep strength.
- Furnace & Heating: High-temperature oxidation resistant Alloy 800 plates for industrial furnace muffles and Incoloy 800 plate suppliers in Mumbai for electric heating element sheathing ensure long heater life.
- Chemical & Petrochemical: Corrosion resistant Incoloy 800 plates for nitric acid production and process piping, Incoloy 800 plate stockist in Mumbai for hydrocarbon cracking and reformer tubes, and UNS N08800 Incoloy plates for chemical reactors and pressure vessels in India provide resistance to chloride stress corrosion cracking and carburization.
- Marine & Oil & Gas: Marine grade Incoloy 800 plates for offshore platform seawater piping systems, Incoloy 800 plate stockholders in Maharashtra for sour gas environment service, and durable Incoloy 800 alloy plates for subsea thermal equipment and flare tips extend service life where both chlorides and high temperature coexist.
- Pharma & Labs: High-purity Incoloy 800 plates for pharmaceutical high-temperature sterilization units and custom cut Incoloy 800 plate sizes for specialty chemical laboratory equipment ensure cleanliness with dimensional stability at heat.
- Sourcing & Compliance: Verified Incoloy 800 plate exporters in India with Mill Test Certificates (MTC) 3.1 and leading Incoloy 800 alloy plate dealers in Mumbai for cryogenic and high-heat applications simplify qualification for EPC and OEM tenders.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Incoloy 800 plates from Aurico Alloys LLP combine ASTM B409/UNS N08800–N08811 pedigree with proven high-temperature strength, superior corrosion resistance, and documented compliance, giving chemical, oil & gas, marine, pharma and power users a safer, longer-lasting alternative to standard stainless plates so are your most critical furnaces, exchangers and piping systems protected by the right grade of Incoloy 800 plates?