Alloy C276 Tubing is a nickel-molybdenum-chromium-tungsten superalloy, showing excellent resistance to mechanical and chemical degradation. The high nickel and molybdenum content imparts remarkable corrosion resistance in reducing environments while chromium provides the same in an oxidizing media. Molybdenum also provides strong resistance to crevice corrosion and pitting. This alloy gives an excellent performance in a wide range of chemical processing conditions, often where nothing else works. Target applications include those involving strong oxidizers such as ferric and cupric chlorides and hot contaminated media (organic and inorganic), formic acid, seawater, and brine solutions.
Product Specifications
ASTM B622/ASME SB622, B829/ASME SB829, NACE MR0175
Hastelloy Tube and Pipe
TS offers seamless Hastelloy tube and Hastelloy pipe for many applications. Applicable Hastelloy tube standards are mainly covered under ASTM A622. We offer many of the common grades as well as the uncommon grades. Hastelloy tube and Hastelloy pipe are used in high-temperature, high-stress service in moderately to severely corrosive applications such as heat exchangers or chemical reactors.
- Material: Hastelloy C-22, C-276, C-4, B, B-2, etc.
- Products include: bar, plate, seamless tube, welded tube, flange, fitting
- Standard: ASTM B335, B333, B906, B622, B619, B626, B366
Hastelloy C-276, which is also sold as Nickel Alloy C-276, is a nickel-molybdenum-chromium wrought alloy. Hastelloy C-276 is perfect for use in situations that demand protection from aggressive corrosion and localized corrosion attack. This alloy Other important features of Nickel Alloy C-276 and Hastelloy C-276 include their resistance to oxidizers:
Ferric and cupric chlorides
- Organic and inorganic hot-contaminated media
- Chlorine (wet chlorine gas)
- Seawater
- Acids
- Hypochlorite
- Chlorine dioxide
As well, Nickel Alloy C-276 and Hastelloy C-276 are weldable with all common methods of welding (oxyacetylene is not recommended). Because of Hastelloy C-276's outstanding corrosion-resistant capabilities, it is used by a wide variety of industries for critical applications including:
- Almost anything used around sulfuric acid (heat exchangers, evaporators, filters, and mixers)
- Bleach plants and digesters for the manufacturing of paper and pulp
- Components used around sour gas
- Marine engineering
- Waste treatment
- Pollution control
The chemical composition of Hastelloy C-276 and Nickel Alloy C-276 make them unique and include:
| Ni, min | Mo | Cr | Fe | W | Mn, max | Co, max | V, max | Si, max |
| 57.00 | 15.00-17.00 | 14.50-16.50 | 4.00-7.00 | 3.00-4.50 | 1.00 | 2.50 | 0.35 | 0.08 |
At TS, we distribute Nickel Alloy C-276 and Hastelloy C-276 in fittings, plates, pipe round bars, strips, sheets, and tubes. All of the mills we work with provide Nickel Alloy C-276 and Hastelloy C-276 that meets or exceeds industry standards including ASME Boiler and Pressure Vessel Code.
Inconel Composition and Elements
Inconel possesses excellent resistance to corrosion, heat, and pressure due to its composition. Nickel helps prevent corrosion when exposed to acidic and alkaline substances and prevents surface cracking. The Chromium content of each Inconel tube helps it to withstand any oxidation and sulfur compounds. Molybdenum helps Inconel to resist pitting.
Industrial Applications of Inconel Tubes and Pipes
The physical and chemical properties of the alloy make it highly suitable for and sought after in numerous industries.
These include:
- Aerospace industry including jet engine components and black box recorders
- Rocket engine components
- Racing car engine components
- Commercial gas turbines including blades, seals, and rotors
- Food processing and related industries
- Chemical processing industry
- Cryogenic storage tanks
- Power generation industry
- Downhole shafts and wellhead parts
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