We manufacture welded Incoloy 800 and 825 tube from 6mm to 63.5mm OD, 0.4mm to 2mm wall thickness.
We manufacture welded Incoloy 800 and 825 tube from 6mm to 63.5mm OD, 0.4mm to 2mm wall thickness. Incoloy is a nickel-iron-chromium alloy family — not technically a stainless steel — engineered for conditions that exceed what stainless grades can reliably handle: sustained extreme heat (800/800H/800HT) or highly corrosive, acidic process environments (825).
Note: Incoloy is a registered trademark family (Special Metals Corporation). We label it separately from our stainless steel grades above because its composition, applications, and buyer intent genuinely differ — most stainless buyers won't need Incoloy, and most Incoloy buyers are solving a problem stainless already failed at.
| Element | Incoloy 800 | Incoloy 825 |
|---|---|---|
| Nickel (Ni) | 30.0–35.0 | 38.0–46.0 |
| Chromium (Cr) | 19.0–23.0 | 19.5–23.5 |
| Iron (Fe) | Balance (39.5 min) | Balance (22.0 min) |
| Molybdenum (Mo) | — | 2.5–3.5 |
| Copper (Cu) | — | 1.5–3.0 |
| Titanium (Ti) | 0.15–0.60 | 0.6–1.2 |
| Carbon (C) | ≤0.10 | ≤0.05 |
| Property | Incoloy 800 | Incoloy 825 |
|---|---|---|
| Tensile strength | ≥520 MPa | ≥585 MPa |
| Yield strength (0.2%) | ≥205 MPa | ≥240 MPa |
| Elongation | ≥30% | ≥30% |
Figures shown are standard reference values for this alloy family; exact limits are governed by the applicable ASTM/ASME specification on your order and Mill Test Certificate.
| Incoloy 800/800H/800HT | Incoloy 825 | |
|---|---|---|
| Primary strength | Sustained extreme heat, oxidation & carburization resistance | Resistance to corrosive/acidic chemical environments |
| Typical use | Heating elements, furnace components | Chemical processing, acid environments, marine |
| Temperature focus | High | Moderate — corrosion focus, not primarily heat |
Grade, size, standard, quantity — send what you have and we'll respond with availability, lead time and pricing.