INCOLOY 800HT | Extreme Heat Performer
32% Cr content enables continuous service at 900°C. Solution-annealed tubes for ethylene furnace convection sections. Carburization resistance exceeds 310S by 300%.
| Technical Specifications | |
| Max Service Temp | 1100°C (Continuous) |
| Carburization Test | ≤0.2 mg/cm² @1100°C |
| Grain Size | ASTM 5-7 |
| Certification | TÜV & PED Cat. III |
UNS N08811 (30-35Ni-20-23Cr) with titanium/aluminum ratio controlled at 0.90-1.20%. Carbon maintained at 0.05-0.10% for carbide stabilization.
100,000h Creep Rupture: 100 MPa @600°C
Carburization Resistance: <0.02mg/cm² @1050°C/1,000h
Thermal Cycling: Survives water quenching from 1100°C
Cyclic Oxidation: <0.8mg/cm²/100h @1100°C
Centrifugal casting to ensure radial homogeneity. Hot extrusion with on-line temperature control. Solution annealing at 1177°C ±10°C followed by rapid gas quench.
Ethylene cracking furnace radiant coils
Steam methane reformer catalyst tubes
Hydrocarbon reforming transfer lines
Direct reduction iron (DRI) process tubing
TÜV RB 508 • API 939-C • EN 10216-5 (Seamless Tubes)
Compliance Matrix: Detailed standards cross-reference table per alloy
Failure Analysis Library: Case studies of tubing failures with prevention methods
Fabrication Guidelines: Digital manuals for welding/bending/inspection
Corrosion Atlas: Interactive chemical resistance database
Calculation Tools: PREN/PMI/LMP (Larson-Miller Parameter) calculators
