ASTM B409 Incoloy 800 Rod Bar High Performance Nickel Iron Chromium Alloy
ASTM B409 Incoloy 800 is a nickel-iron-chromium alloy designed for high temperature service where both oxidation resistance and good corrosion resistance are required. Unlike standard stainless steels, Incoloy 800 maintains its strength and structural stability at elevated temperatures.
| Parameter | Details |
|---|---|
| Product Name | Incoloy 800 / Alloy 800 / Incoloy® 800 |
| UNS Designation | N08800 |
| Werkstoff Nr. | 1.4876 |
| British Standard | BS 3075 NA15, BS 3076 NA15 |
| Chinese Equivalent | 0Cr20Ni32Fe / NS1101 |
| Product Forms | Plate, Sheet, Tube, Pipe, Bar, Wire, Strip, Foil, Forging Stock |
| Available Grades | 800 (N08800), 800H (N08810), 800HT (N08811) |
| Supply Condition | Annealed, Solution Treated |
| Available Dimensions | Sheet/Plate: 0.3mm - 50mm thickness; Tube: 6mm - 219mm OD (custom available) |
| Standard Length | 2000mm, 2438mm, 3000mm, 6000mm (or as required) |
| Custom Sizes | Available upon request |
| Surface Finish | Annealed, Pickled, Descaled, Bright Annealed |
The chemical composition of Incoloy 800 (UNS N08800) complies with ASTM B409, B407, and B408 standards.
| Element | Content (%) | Notes |
|---|---|---|
| Nickel (Ni) | 30.0 – 35.0 | Provides austenitic stability and corrosion resistance |
| Chromium (Cr) | 19.0 – 23.0 | Enhances oxidation and carburization resistance |
| Iron (Fe) | ≥ 39.5 (balance) | Base element, balances cost and properties |
| Carbon (C) | ≤ 0.10 | Controlled to optimize creep properties |
| Manganese (Mn) | ≤ 1.50 | Aids in hot workability |
| Silicon (Si) | ≤ 1.00 | Improves oxidation resistance |
| Phosphorus (P) | ≤ 0.045 | Minimized to maintain ductility |
| Sulfur (S) | ≤ 0.015 | Controlled for hot workability |
| Aluminum (Al) | 0.15 – 0.60 | Stabilizes against intergranular attack |
| Titanium (Ti) | 0.15 – 0.60 | Stabilizes against intergranular attack |
| Copper (Cu) | ≤ 0.75 | Residual element |
Actual mill test certificates (EN 10204 3.1) available per batch.
Composition Comparison: Incoloy 800 Series Grades
| Element | 800 (N08800) | 800H (N08810) | 800HT (N08811) |
|---|---|---|---|
| Carbon (C) | ≤ 0.10% | 0.05 – 0.10% | 0.06 – 0.10% |
| Aluminum (Al) | 0.15 – 0.60% | 0.15 – 0.60% | 0.25 – 0.60% |
| Titanium (Ti) | 0.15 – 0.60% | 0.15 – 0.60% | 0.25 – 0.60% |
| Key Difference | Standard grade | Controlled carbon for creep strength | Enhanced Ti/Al for highest creep rupture |
Annealed Condition (Typical Values)
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength (Rm) | 515 – 750 MPa | 75 – 109 ksi |
| Yield Strength 0.2% Proof (Rp0.2) | 205 – 310 MPa | 30 – 45 ksi |
| Elongation (A) | 45 – 60% | 45 – 60% |
| Hardness (HB) | 140 – 190 HB | 140 – 190 HB |
| Density | 7.94 g/cm³ | 0.287 lb/in³ |
| Melting Point | 1350 – 1400°C | 2460 – 2550°F |
| Modulus of Elasticity | 196 GPa | 28.4 x 10³ ksi |
Values based on ASTM B409 standards for the annealed condition. Mechanical properties may vary with product form and dimensions.
Comparison of Incoloy 800 Series Grades (Typical)
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | High-Temp Creep Performance |
|---|---|---|---|---|
| 800 (N08800) | 515 – 730 | 205 – 310 | 45 – 60 | Standard |
| 800H (N08810) | 515 – 730 | 205 – 310 | 45 – 60 | Enhanced |
| 800HT (N08811) | 515 – 730 | 205 – 310 | 45 – 60 | Highest |
Operating Temperature Range:
-
Annealed condition: -200°C to +815°C (-330°F to +1500°F)
| Product Form | Available Dimensions | Standards |
|---|---|---|
| Plate / Sheet | Thickness: 0.3mm – 50mm; Width: up to 2000mm | ASTM B409 |
| Tube / Pipe | OD: 6mm – 219mm; Wall: 1mm – 20mm | ASTM B407, B829 |
| Bar / Rod | Diameter: 3mm – 250mm | ASTM B408 |
| Wire | Diameter: 0.025mm – 21mm | BS 3075 NA15 |
| Strip / Foil | Thickness: 0.025mm – 2.0mm | ASTM B409 |
| Forging Stock | Custom sizes | ASTM B564 |
To ensure product integrity during transit, Incoloy 800 alloys are carefully packed for international transport:
| Step | Packaging Detail |
|---|---|
| 1. Surface Protection | Interleaving paper or PE film between sheets to prevent scratching |
| 2. Moisture Protection | VCI (Volatile Corrosion Inhibitor) paper and waterproof wrap |
| 3. Edge Protection | Cardboard or plastic edge protectors for plates and sheets |
| 4. Securing | Heavy-duty steel or plastic strapping (2–4 straps per bundle) |
| 5. Palletizing | Export-standard, ISPM 15 certified fumigated wooden pallets |
| 6. Pipe/Tube Packaging | Individual plastic caps on ends + woven fabric wrap + steel bundles |
| 7. Optional | Waterproof shrink-wrap and corner guards for sea freight |
| 8. Marking | Product grade, standard, dimension, heat number, net weight |
Custom packaging solutions available upon request.
| Grade | UNS | Carbon Content | Key Difference |
|---|---|---|---|
| Incoloy 800 | N08800 | ≤ 0.10% | Standard grade – good general purpose |
| Incoloy 800H | N08810 | 0.05 – 0.10% | Controlled carbon + larger grain size for higher creep strength |
| Incoloy 800HT | N08811 | 0.06 – 0.10% | Al + Ti controlled + fine grain for maximum creep rupture strength |
For applications above 600°C, Incoloy 800H or 800HT is often specified. Please contact us for these grades if required.
We supply ASTM B409 Incoloy 800 plates, sheets, and strips to heat exchanger manufacturers, petrochemical plants, furnace builders, and EPC contractors worldwide.
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