Inconel 600 (UNS N06600)
The general-purpose nickel-chromium alloy — oxidation resistant to 2000 °F, immune to chloride stress-corrosion cracking, for furnace, heat-treat and nuclear hardware.
What Inconel 600 is.
Inconel 600 is a 72 percent nickel, 15 percent chromium, 8 percent iron alloy that is not age hardenable; its strength comes from solid solution and cold work. It resists oxidation and carburising atmospheres to about 2000 °F, is virtually immune to chloride-ion stress-corrosion cracking, and handles caustic and many organic acids.
ASTM B166 governs the bar. We machine Inconel 600 studs, bolts, nuts and components from certified B166 bar in the hot-worked or annealed condition.
Chemical composition.
| Element | Symbol | Min % | Max % |
|---|---|---|---|
| Nickel | Ni | 72.0 | — |
| Chromium | Cr | 14.0 | 17.0 |
| Iron | Fe | 6.0 | 10.0 |
| Manganese | Mn | — | 1.0 |
| Carbon | C | — | 0.15 |
| Copper | Cu | — | 0.5 |
| Silicon | Si | — | 0.5 |
| Sulfur | S | — | 0.015 |
Values per ASTM B166-19 Table 1 (verified against the specification). Confirm the edition called out on your purchase order with our estimating team.
Mechanical properties.
| Condition and size | Tensile strength, min (ksi) | Yield strength 0.2%, min (ksi) | Elongation, min (%) |
|---|---|---|---|
| Cold worked, as worked — rounds under ½ in. | 120 | 90 | 7 |
| Cold worked, as worked — rounds ½ to 1 in. | 110 | 85 | 10 |
| Cold worked, as worked — rounds over 1 to 2½ in. | 105 | 80 | 12 |
| Hot worked, as worked — rounds ¼ to ½ in. | 95 | 45 | 20 |
| Hot worked, as worked — rounds over ½ to 3 in. | 90 | 40 | 25 |
| Hot worked, as worked — rounds over 3 in. | 85 | 35 | 30 |
| Annealed — all sizes | 80 | 35 | 30 |
Values per ASTM B166-19 Table 2 (verified against the specification). Confirm the edition called out on your purchase order with our estimating team.
Specifications that apply.
How Inconel 600 ships from Houston.
- Full-thread studs and stud bolts
- Hex and heavy hex bolts
- Socket head cap screws
- Hex nuts in the same alloy
- Threaded rod
- Machined components from certified bar
Inconel 600 fasteners we make.
Every item is manufactured to your drawing or standard in Inconel 600, imperial or metric, with an EN 10204 3.1 certificate.
What is Inconel 600?
Alloy 600 is the parent of the Inconel family: a nickel-chromium solid solution with enough iron to be economical. Nickel gives it resistance to reducing environments, chlorides and caustics; chromium gives oxidation resistance in air and sulfur-free atmospheres to about 2000 °F. It cannot be hardened by heat treatment, so strength depends on how it was worked: hot-worked bar carries 90 ksi, cold-worked bar over 100 ksi, annealed bar 80 ksi. It is the standard nickel alloy for furnace and heat-treatment hardware and for nuclear steam generators.
Testing, certification and marking
- Tensile and hardness tested per lot on the finished product
- Grade or alloy marking 600 with heat number and manufacturer's identification on every piece
- EN 10204 3.1 material test report with heat number and chemistry; 3.2 witness available
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