Incoloy 800HT plate & sheet
ASTM B409
Incoloy 800HT plate and sheet provide tightly controlled carbon and Al + Ti for creep duty for cut, formed or fabricated components. Thickness, flatness and thermal history determine how the stock becomes a usable cover, liner or structural section.
- MOQ
- 100 kg
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution annealed (≥1149°C / 2100°F)
EN 10204 3.1 MTC + heat-number traceability
Which standard is on your order?
Raw Material Specifications
Heat Treatment
Solution annealedThe specified solution treatment develops the controlled grain structure needed for sustained high-temperature creep duty.
What we can make in Alloy 800HT
Plate
Use for machined covers, tube sheets and equipment plates. Include finishing allowance where machining must remove mill scale or achieve flat gasket and bearing faces.
Sheet
Use for formed covers, ducting and thermal shields where bendability and thickness consistency matter. Surface finish and grain direction can affect visible surfaces and bend quality.
Cut blanks
Use cut profiles to reduce workshop cutting and material waste before fabrication. Hole position, edge finish and heat-affected edges matter when the blank goes directly into forming or welding.
- Size
- Thickness × width × length
- Supply form
- Plate · Sheet · Cut blanks
- Geometry
- Flatness · Squareness · Edges
- Condition
- Grade-specific delivery condition
- Final condition
- Solution annealed (≥1149°C / 2100°F)
- Inspection
- Cross-section · Surface · Delivery condition · Heat identity
Supply & preparation
Plate or sheet is prepared as full pieces or cut blanks, with stock condition retained through cutting and identification.
Material condition
Solution annealing at a minimum of 1149°C (2100°F) establishes the coarse-grain condition used for creep resistance. The heat-treatment record and grain-size result identify this delivery state.
Finished geometry
Thickness, flatness, squareness and edge condition determine the usable blank.
Where 800HT fits — and what matters
Furnaces & Heat Treatment
Furnace shields and casing panelsIncoloy 800HT plate & sheet are cut and formed into furnace shields and casing panels, support plates or cover blanks. Thickness and flatness set the available section before cutting, bending or joining. Hot dwell, thermal expansion and repeated furnace cycles set the working load.
Power & Turbines
Hot-duct shields and thermal bafflesIncoloy 800HT plate & sheet are cut and formed into hot-duct shields and thermal baffles, support plates or cover blanks. Thickness and flatness set the available section before cutting, bending or joining. Hot dwell and start-stop expansion act on the supported or moving component.
Chemical Processing
Process-heater shields and bafflesIncoloy 800HT plate & sheet are cut and formed into process-heater shields and baffles, support plates or cover blanks. Thickness and flatness set the available section before cutting, bending or joining. These parts work in the heated equipment zone, where sustained loading and thermal expansion govern their section and clearance.
Same plate & sheet. Different material priorities.
Incoloy 800HT material dataIncoloy 800
UNS N08800- Carbon
- ≤0.10%
- What changes
- General heat and oxidation resistance; no grain-size requirement in the family comparison.
Incoloy 800H
UNS N08810- Carbon
- 0.05–0.10%
- What changes
- Controlled carbon and coarse-grain condition for creep and stress-rupture duty.
Incoloy 800HT
UNS N08811 · Current grade- Carbon
- 0.06–0.10%
- What changes
- Tighter carbon and Al + Ti control (0.85–1.20%), with solution treatment and coarse grain for creep duty.
From drawing to documented delivery
- 01Drawing & BOMForm, dimensions and quantity
- 02Material & formingGrade, heat and manufacturing route
- 03Final inspectionGeometry, threads and ordered tests
- 04Documents & dispatchLot records and identified packing
Order documents
- Material identity
- UNS N08811 · heat number · ordered condition
- Stock acceptance
- UNS grade, carbon and alloy chemistry, solution-treatment record and ordered grain-size evidence.
- Dimensional record
- Cross-section · Surface · Delivery condition · Heat identity
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 800HT plate & sheet enquiry
Questions about 800HT plate & sheet
Which stock details matter beyond alloy and thickness?
Flatness, surface finish, edge preparation and any directional forming requirement influence the usable component. A cut blank also needs a heat identity that survives separation from the original sheet or plate.