What are nickel alloy 600 and Hastelloy C276 tubes?
What are nickel alloy 600 and Hastelloy C276 tubes?
Inconel 600 and Hastelloy C276 tubing are high-performance nickel-based tubing renowned for their exceptional strength and corrosion resistance under extreme conditions. Inconel 600 performs exceptionally well in high-temperature reducing environments, while C276 exhibits greater resistance to corrosive, oxidizing, and chloride-rich media (such as wet chlorine and seawater). The main differences lie in their elemental composition (C276 has a high molybdenum/chromium ratio, while Inconel 600 is a nickel-chromium alloy) and specific strength requirements. This makes C276 ideal for chemical processing, while Inconel 600 is suitable for aerospace/nuclear applications, although both can handle demanding high-temperature, high-pressure applications well.
What is the temperature range of INCONEL 600 alloy?
INCONEL 600 alloy has a wide range of applications and can be used at temperatures ranging from low temperatures to above 2000°F (1095°C). Due to its high strength and corrosion resistance, this alloy is widely used in the chemical industry.
What is Inconel 600 pipe?
Inconel 600 pipe is a type of pipe made of high-performance nickel-chromium-iron alloy (Inconel 600), specifically designed for transporting media in extreme high-temperature and highly corrosive environments (such as chlorides, alkalis, and various acid-base media) up to approximately 1150°C. With its excellent high-temperature strength, oxidation resistance, and resistance to stress corrosion cracking, it is widely used in critical areas such as nuclear power plant steam generators, petrochemical cracking furnaces, heat treatment equipment, and harsh chemical processes. It is a top-tier, reliable solution when stainless steel is insufficient, but at a significantly higher cost.
What is C276 alloy pipe?
C276 alloy pipe has a high molybdenum and chromium content, enabling it to resist chloride ion corrosion; the addition of tungsten further enhances its corrosion resistance. This material is particularly suitable for high-temperature environments, mixed corrosive environments of inorganic and organic acids (such as formic acid and acetic acid), and corrosive seawater environments.
Inconel 600 vs Hastelloy C276 Pipe –1. Chemical Composition
| Element | Inconel 600 (UNS N06600) | Hastelloy C-276 (UNS N10276) |
|---|---|---|
| Nickel (Ni) | ≥ 72.0 % | Balance (~57%) |
| Chromium (Cr) | 14.0 - 17.0 % | 14.5 - 16.5 % |
| Iron (Fe) | 6.0 - 10.0 % | 4.0 - 7.0 % |
| Molybdenum (Mo) | – | 15.0 - 17.0 % |
| Tungsten (W) | – | 3.0 - 4.5 % |
| Cobalt (Co) | – | ≤ 2.5 % |
| Vanadium (V) | – | ≤ 0.35 % |
| Manganese (Mn) | ≤ 1.00 % | ≤ 1.00 % |
| Silicon (Si) | ≤ 0.50 % | ≤ 0.08 % |
| Carbon (C) | ≤ 0.15 % | ≤ 0.010 % |
| Sulfur (S) | ≤ 0.015 % | ≤ 0.030 % |
| Phosphorus (P) | ≤ 0.015 % | ≤ 0.040 % |
Physical Properties Comparison: Inconel 600 vs. Hastelloy C-276 Pipe
| Property | Inconel 600 (Annealed) | Hastelloy C-276 (Annealed) |
|---|---|---|
| Density | 8.47 g/cm³ (0.306 lb/in³) | 8.89 g/cm³ (0.321 lb/in³) |
| Melting Range | 1354 - 1413 °C (2469 - 2575 °F) | 1323 - 1371 °C (2413 - 2500 °F) |
| Thermal Expansion Coefficient (20-100°C) | 13.3 × 10⁻⁶ /K | 11.2 × 10⁻⁶ /K |
| Thermal Conductivity (at 100°C) | 14.9 W/(m·K) | 10.1 W/(m·K) |
| Specific Heat Capacity (20°C) | 444 J/(kg·K) | 427 J/(kg·K) |
| Electrical Resistivity | 1.03 μΩ·m | 1.30 μΩ·m |
| Modulus of Elasticity (Young's Modulus) | 214 GPa (31.0 × 10⁶ psi) | 205 GPa (29.7 × 10⁶ psi) |
| Magnetic Permeability | Essentially non-magnetic (~1.01) | Essentially non-magnetic (<1.001) |
| Poisson's Ratio | 0.29 | ~0.31 |
Inconel 600 Pipe vs Hastelloy C276 Tube – 3. Corrosion Resistance
Both alloys are renowned for their corrosion resistance, but they excel in different environments. Inconel 600 tubing exhibits exceptional resistance to oxidation and corrosion in high-temperature oxidizing atmospheres, making it suitable for applications such as furnace components and heat treatment equipment.
On the other hand, Hastelloy C276 alloy tubing demonstrates superior corrosion resistance in reducing environments and corrosive chemicals, including hydrochloric acid, sulfuric acid, and hydrogen sulfide. Its unique composition enables it to withstand even the most corrosive environments, making it a preferred material for chemical processing, pulp and paper manufacturing, and waste treatment facilities.
Application Comparison: Inconel 600 Tube vs. Hastelloy C-276 Tube
| Industry / Application Area | Inconel 600 Tube | Hastelloy C-276 Tube |
|---|---|---|
| Core Application Principle | Selected for high-temperature strength, oxidation resistance, and corrosion resistance in high-heat, oxidizing, or alkaline environments. | Selected for exceptional, broad-spectrum corrosion resistance in highly aggressive chemical environments, especially those containing chlorides, oxidizing/reducing acids, and localized corrosion risks. |
| Chemical & Petrochemical Processing | Heat exchanger tubing in non-chloride services, furnace radiant tubes, and equipment for caustic (NaOH/KOH) production and handling. | Primary Material. Reactors, columns, heat exchangers, piping, and fittings for handling sulfuric, hydrochloric, phosphoric, and organic acids, chlorine, hypochlorite, and sour (H₂S) streams. The benchmark for severe corrosion service. |
| Pharmaceutical & Fine Chemical | High-purity process lines and evaporators where contamination must be avoided. | Critical process tubing, reactors, and transfer lines for aggressive synthesis and purification steps involving mixed acids and halides. |
| Pollution Control & Flue Gas Desulfurization (FGD) | Limited use. | Standard Material. Absorber towers, mist eliminators, ducting, and stack liners where wet, chloride-laden, acidic conditions prevail. |
| Pulp & Paper Industry | Digester and bleaching system components in alkaline sections. | Bleach plant washers, tubing, and fittings exposed to highly corrosive chlorine dioxide, chlorates, and sulfuric acid. |
| Waste Incineration & Treatment | Heat recovery tubes in less aggressive exhaust. | Severe service scrubbers, quench systems, and effluent lines handling hot, acidic, halogen-containing off-gases and leachates. |
| Marine & Offshore | Not recommended for seawater service. | Seawater cooling systems, ballast water piping, and components in highly corrosive offshore and subsea environments. |
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Steel is a supplier of Inconel 600 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with Inconel 600 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Inconel 600, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
