UNS N06600 High Temperature Nickel Alloy Tube - Heat Resistant Nickel Chromium Alloy
UNS N06600 (Inconel 600) is a nickel-chromium alloy specifically designed for high-temperature and corrosion-resistant applications. With a nominal composition of 72% Ni + 14-17% Cr, this alloy offers excellent oxidation resistance up to 1093°C (2000°F), good strength at elevated temperatures, and outstanding resistance to chloride-ion stress-corrosion cracking.
The high-temperature nickel alloy tube is widely used in heat treatment furnaces, chemical processing, aerospace components, and nuclear engineering. Its heat-resistant nickel chromium alloy composition ensures reliable performance in harsh environments where standard stainless steels would fail.
Specifications & Dimensions
| Parameter |
Details |
| Standard |
ASTM B163, ASTM B167, ASME SB163, ASME SB167 |
| Grade |
Inconel 600 / UNS N06600 |
| Type |
Seamless tube / Welded tube (as required) |
| Outer Diameter |
6.0 mm – 219.1 mm (1/8″ – 8″) |
| Wall Thickness |
0.5 mm – 12.7 mm (SCH 5S – SCH 80S) |
| Length |
6 m / 9 m / 12 m, or random lengths |
| Process |
Cold drawn / Cold rolled (seamless) |
| Finish |
Annealed & pickled, bright annealed |
| Packaging |
Hexagonal bundles + plastic end caps + seaworthy wooden crates or pallets |
| Ends |
Plain end / Beveled end |
Chemical Composition
The unique properties of Inconel 600 derive from its high nickel content (72% minimum) combined with chromium. This balance provides resistance to both reducing (nickel) and oxidizing (chromium) environments.
| Element |
Content (%) |
Role |
| Nickel (Ni) |
72.0 min |
Base element – provides resistance to reducing conditions, alkaline solutions, and chloride-ion SCC |
| Chromium (Cr) |
14.0 – 17.0 |
Provides resistance to oxidizing conditions, sulfur compounds, and high-temperature oxidation |
| Iron (Fe) |
6.0 – 10.0 |
Adds structural stability and cost-effectiveness |
| Carbon (C) |
0.15 max |
Controlled for carbide formation at elevated temperatures |
| Manganese (Mn) |
1.0 max |
Deoxidizer and grain refiner |
| Silicon (Si) |
0.50 max |
Enhances oxidation resistance |
| Copper (Cu) |
0.50 max |
Trace element – controlled for corrosion resistance |
| Sulfur (S) |
0.015 max |
Controlled for hot workability |
For nuclear applications (Alloy 600T), tighter controls on cobalt, boron, and other trace elements are applied – contact us for nuclear-grade certification.
Typical Mechanical Properties (Annealed Condition)
Inconel 600 is supplied in the annealed condition (solution treated) for optimal corrosion resistance and fabricability. Cold-worked tempers (¼ hard, ½ hard, full hard) are available for wire and strip applications requiring higher strength.
| Product Form |
Condition |
Tensile Strength (KSI / MPa) |
Yield Strength 0.2% Offset (KSI / MPa) |
Elongation (%) |
Hardness |
| Rod & Bar |
Annealed |
80 – 100 (550 – 690) |
25 – 50 (170 – 345) |
55 – 35 |
65 – 85 HRB |
| Plate (Hot Rolled) |
Annealed |
80 – 100 (550 – 725) |
30 – 50 (205 – 345) |
55 – 35 |
65 – 85 HRB |
| Sheet (Cold Rolled) |
Annealed |
80 – 100 (550 – 690) |
30 – 45 (205 – 310) |
55 – 35 |
88 HRB max |
| Tube & Pipe |
Cold Drawn / Annealed |
80 – 100 (550 – 690) |
25 – 50 (170 – 345) |
55 – 35 |
88 HRB max |
| Wire (Soft) |
Annealed |
80 – 120 (550 – 830) |
35 – 75 (240 – 520) |
45 – 20 |
– |
| Wire (¼ to ½ Hard) |
Cold Drawn (No. 1 Temper) |
105 – 135 (725 – 930) |
70 – 105 (480 – 725) |
35 – 15 |
– |
| Wire (Spring Temper) |
Full Hard |
170 – 220 (1170 – 1520) |
150 – 210 (1035 – 1450) |
5 – 2 |
– |
Key Features
Excellent oxidation resistance up to 1093°C (2000°F)
Good high-temperature strength and creep resistance
Outstanding resistance to chloride stress-corrosion cracking
Resistant to many organic and inorganic corrodents
Good mechanical properties at sub-zero temperatures
Easy to weld and fabricate
Applications
UNS N06600 high temperature nickel alloy tube is used in demanding environments, including:
| Industry |
Application |
| Heat Treatment |
Furnace components, retorts, muffles, radiant tubes |
| Chemical Processing |
Reactors, heat exchangers, evaporator tubes |
| Aerospace |
Engine components, exhaust systems |
| Nuclear |
Reactor core components |
| Petrochemical |
Cracker tubes, transfer piping |
| Electronics |
Cathode ray tube support grids |