High-nickel alloys extend beyond what stainless steel can reliably handle — sustained extreme heat or highly corrosive/acidic environments. We manufacture welded tube across the high-nickel range — Incoloy 800/800H and 825, Inconel, Hastelloy and Monel. The tables below cover each alloy; tell us your requirement and we'll quote it.
Weight %, maximum unless a range or minimum is shown. Balance is iron (or nickel, for the nickel-base alloys). Grades with a detailed guide link to their full page.
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo | N | Other |
|---|---|---|---|---|---|---|---|---|---|---|
| Incoloy 800/800H/800HT | ≤0.10 | ≤1.50 | — | ≤0.015 | ≤1.00 | 19.0–23.0 | 30.0–35.0 | — | — | 800H/HT: C 0.05–0.10; Fe 39.5 min; Ti 0.15–0.60; Al 0.15–0.60; Cu ≤0.75 |
| Incoloy 825 | ≤0.05 | ≤1.00 | — | ≤0.030 | ≤0.50 | 19.5–23.5 | 38.0–46.0 | 2.5–3.5 | — | Fe 22.0 min; Cu 1.5–3.0; Ti 0.6–1.2; Al ≤0.20 |
| Inconel 600 | ≤0.15 | ≤1.00 | — | ≤0.015 | ≤0.50 | 14.0–17.0 | ≥72.0 | — | — | Fe 6.0–10.0; Cu ≤0.50 |
| Inconel 601 | ≤0.10 | ≤1.00 | — | ≤0.015 | ≤0.50 | 21.0–25.0 | 58.0–63.0 | — | — | Al 1.0–1.7; Cu ≤1.0; Fe balance |
| Inconel 625 | ≤0.10 | ≤0.50 | ≤0.015 | ≤0.015 | ≤0.50 | 20.0–23.0 | ≥58.0 | 8.0–10.0 | — | Nb+Ta 3.15–4.15; Fe ≤5.0; Co ≤1.0; Al ≤0.40; Ti ≤0.40 |
| Inconel 718 | ≤0.08 | ≤0.35 | ≤0.015 | ≤0.015 | ≤0.35 | 17.0–21.0 | 50.0–55.0 | 2.80–3.30 | — | Nb 4.75–5.50; Ti 0.65–1.15; Al 0.20–0.80; Co ≤1.0; Fe balance |
| Hastelloy C-276 | ≤0.010 | ≤1.00 | ≤0.040 | ≤0.030 | ≤0.08 | 14.5–16.5 | Balance | 15.0–17.0 | — | W 3.0–4.5; Fe 4.0–7.0; Co ≤2.5; V ≤0.35 |
| Hastelloy C-22 | ≤0.015 | ≤0.50 | ≤0.020 | ≤0.020 | ≤0.08 | 20.0–22.5 | Balance | 12.5–14.5 | — | W 2.5–3.5; Fe 2.0–6.0; Co ≤2.5; V ≤0.35 |
| Monel 400 | ≤0.30 | ≤2.00 | — | ≤0.024 | ≤0.50 | — | 63.0–70.0 | — | — | Cu 28.0–34.0; Fe ≤2.5 |
| Monel K-500 | ≤0.25 | ≤1.50 | — | ≤0.010 | ≤0.50 | — | 63.0–70.0 | — | — | Cu 27.0–33.0; Al 2.30–3.15; Ti 0.35–0.85; Fe ≤2.0 |
Annealed condition. "~" marks a typical value where the specification sets no minimum.
| Grade | Tensile strength (MPa) | Yield 0.2% (MPa) | Elongation (%) | Hardness |
|---|---|---|---|---|
| Incoloy 800/800H/800HT | ≥520 | ≥205 | ≥30 | — |
| Incoloy 825 | ≥585 | ≥240 | ≥30 | — |
| Inconel 600 | ~550 | ~240 | ~30 | — |
| Inconel 601 | ~550 | ~205 | ~30 | — |
| Inconel 625 | ≥827 | ≥414 | ≥30 | — |
| Inconel 718 | Heat-treat dependent | — | — | — |
| Hastelloy C-276 | ≥690 | ≥283 | ≥40 | — |
| Hastelloy C-22 | ≥690 | ≥283 | ≥45 | — |
| Monel 400 | ≥485 | ≥195 | ≥35 | — |
| Monel K-500 | Heat-treat dependent | — | — | — |
Figures are standard reference values for each UNS grade; exact limits are governed by the applicable ASTM/ASME specification on your order and your Mill Test Certificate.
Grade, size, standard, quantity — send what you have and we'll respond with availability, lead time and pricing.