Hastelloy pipes and tubes are commonly known as high-performance nickel-based alloys. They are worldwide famous for their excellent resistance to corrosion, high temperatures, and pressurized conditions. Regardless of whether they are seamless or welded, these pipes, developed on a nickel, chromium, molybdenum combination, possess excellent resistance to crevice corrosion, pitting, and stress corrosion cracks. These are ideal for operation in harsh conditions of various chemicals such as hydrochloric, sulfuric, and phosphoric acids, in addition to a range of strong oxidation and reduction agents. The completely austenitic composition of Hastelloy pipes renders high ductility, strength, and stability to the material.
Hastelloy Pipes and Tubes come in seamless, welded, ERW, and EFW varieties, which means that they can be used in a large variety of industrial fabrication and engineering procedures. They can be shaped into complex components easily due to their high weldability and capability to be fabricated without failure to adhere to mechanical integrity. Hastelloy alloy pipes are reported to have great resistance to corrosion induced by chloride, weld heat-affected zone, and knife-line corrosion making it have a long service life in harsh operating conditions. The above characteristics are the reasons why Hastelloy tubing is an ideal specimen of chemical processing plants, oil and gas, heat exchangers, marine engineering, pollution control systems, and power generation. Hastelloy Pipes and Tubes remain one of the most reliable corrosion resistant materials to date due to their resistance to aggressive fluids and high temperatures, and hence carry on with their application in critical sectors of industries.
Table of Contents
- Hastelloy C276 Pipe & Tube Specifications
- Chemical Composition of Hastelloy Pipes & Tubes
- Hastelloy C276 / C22 /B2 Pipe and Tube Mechanical Properties
- Hastelloy Pipes & Tubes Equivalent Grades
- Hastelloy C276 Tube Size Chart
- Pressure Rating of Hastelloy C276 Tube
- Types of Hastelloy Pipes & Tubes
- Manufacturing Process of Hastelloy Pipes & Tubes
- Applications Usage of Hastelloy Pipes & Tubes
- Frequently Asked Questions (FAQs)
Hastelloy C276 Pipe & Tube Specifications
| Category | Details |
| Specifications | ASTM B622, B619, B626 / ASME SB622, SB619, SB626 |
| Size | 15"NB � 150"NB |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End, Treaded |
Chemical Composition of Hastelloy Pipes & Tubes
| Grade | C (Carbon) | Mn (Manganese) | Si (Silicon) | S (Sulfur) | Co (Cobalt) | Ni (Nickel) | Cr (Chromium) | Fe (Iron) | Mo (Molybdenum) | P (Phosphorus) |
| C276 | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 50.99 min* | 14.50 � 16.50 | 4.00 � 7.00 | 15.00 � 17.00 | 0.04 max |
| C22 | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 50.015 min* | 20.00 � 22.50 | 2.00 � 6.00 | 12.50 � 14.50 | 0.02 max |
| B2 | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | Balance | 1.0 max | 2.0 max | 26.00 � 30.00 | 0.04 max |
Hastelloy C276 / C22 /B2 Pipe and Tube Mechanical Properties
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
| Hastelloy C276 | 8.89 g/cm� | 1370 �C (2500 �F) | 115,000 Psi / 790 MPa | 52,000 Psi / 355 MPa | 40% |
| Hastelloy C22 | 8.69 g/cm� | 1399 �C (2550 �F) | 100,000 Psi / 690 MPa | 45,000 Psi / 310 MPa | 45% |
| Hastelloy B2 | 9.2 g/cm� | 1370 �C (2500 �F) | 110,000 Psi / 760 MPa | 51,000 Psi / 350 MPa | 40% |
Hastelloy Pipes & Tubes Equivalent Grades
| Standard | Werkstoff Nr. | UNS | JIS | GOST | EN | OR |
| Hastelloy C276 | 2.4819 | N10276 | NW 0276 | ??65??? | NiMo16Cr15W | ??760 |
| Hastelloy C22 | 2.4602 | N06022 | NW 6022 | � | NiCr21Mo14W | � |
| Hastelloy B2 | 2.4617 | N10665 | � | � | � | � |
Hastelloy C276 Tube Size Chart
| Wall | Sizes ( O.D.) |
| .010 | 1/16" , 1/8" , 3/16" |
| .020 | 1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8" |
| .012 | 1/8" |
| .016 | 1/8" , 3/16" |
| .028 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2" |
| .035 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .049 | 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .065 | 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3" |
| .083 | 1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3" |
| .095 | 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2" |
| .109 | 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" |
| .120 | 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3" |
| .125 | 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4" |
| .134 | 1" |
| .250 | 3" |
| .375 | 3 1/2" |
Pressure Rating of Hastelloy C276 Tube
| Pipe O.D. (in.) | .028" | .035" | .049" | .065" | .083" | .095" | .109" | .120" |
| 1/8" | 7900 | 10100 | � | � | � | � | � | � |
| 1/4" | 3700 | 4800 | 7000 | 9500 | � | � | � | � |
| 5/16" | � | 3700 | 5400 | 7300 | � | � | � | � |
| 3/8" | � | 3100 | 4400 | 6100 | � | � | � | � |
| 1/2" | � | 2300 | 3200 | 4400 | � | � | � | � |
| 3/4" | � | � | 2200 | 3000 | 4000 | 4600 | � | � |
| 1" | � | � | � | 2200 | 2900 | 3400 | 3900 | 4300 |
Types of Hastelloy Pipes & Tubes
Alloy EFW Pipe
Alloy ERW Pipe
Alloy Seamless Pipe
Alloy Welded Pipe
Hastelloy Alloy Capillary Tube
Hastelloy Alloy Heat Exchanger Tubes
Hastelloy Alloy Square Tubes
Hastelloy Alloy Welded Tube
Hastelloy Seamless Tube
Manufacturing Process of Hastelloy Pipes & Tubes
The production of Hastelloy pipes and tubes is performed with controlled metallurgical processes, resulting in a high resistance to corrosion, high temperature strength, and the reliability of the work of the pipes throughout the aggressive chemical and industrial conditions.
- Raw Material Selection
The main alloying elements are carefully chosen, i.e., high-purity nickel, chromium, molybdenum and iron. Its chemical composition is strictly regulated with the result to secure high resistance to oxidation, pitting, and stress corrosion cracking. - Melting and Alloying
Vacuum induction melting (VIM) or electric arc furnace methods are used to melt the raw materials to obtain a homogeneous composition of alloy. This lowers the amount of impurities, and it brings uniform mechanical and corrosion resistance characteristics throughout the material. - Hot Working and Forming
Hot processes are utilized in making Hastelloy pipes and tubings through hot working processes like extrusion, hot rolling, or forging. These processes provide a consistent wall thickness, accurate dimensions and optimum grain structure. - Heat Treatment
Solution annealing and controlled cooling is used to achieve relief of internal stresses, increase ductility, and optimum corrosion resistance. Good heat treatment provides constant microstructure and mechanical behavior at extreme conditions. - Complete and Quality Control
The last processes involve straightening, cutting, surface finishing, and dimensional calibration. The quality checks, including chemical inspection, mechanical tests, and non-destructive tests, are conducted in order to meet international standards.
Applications Usage of Hastelloy Pipes & Tubes
Industries that require high corrosion resistance, thermal stability and mechanical strength in their operations have high preference of hastyelloy pipes and tubes which ensure safe and efficient operations.
- Chemical Processing Industry
Widely used in reactors, heat exchangers, and transfer piping that deal with strong acids, chlorides and corrosive chemicals since it is highly resistant to chemical attack. - Oil and Gas Industry
Used in offshore platforms, subsea piping and refinery systems where high pressure, high temperature and corrosive media are likely to occur. - Power Generation Plants
Applied in nuclear, thermal and renewable power plants as heat exchangers, condensers and also in high pressure high-temperature piping systems that need a long lifespan. - Aerospace Industry
Applied to exhaust systems, fuel lines and other high temperature object where toughness and oxidation protection at raised temperatures are needed. - Waste Treatment and Pollution Control
Used in flue gas desulfurization facilities, scrubbers and waste processing equipment because it can withstand acidic and hot temperature conditions. - Pharmaceutical and Food Processing
Applied in hygienic piping systems and processing equipment where the corrosion resistance and the purity of the material are needed to safeguard the integrity of the product. - Marine and Seawater Uses
Used in seawater handling systems, desalination plants and marine components because of their great resistance to corrosion caused by chloride.
Frequently Asked Questions (FAQs)
Hastelloy pipes and tubes are nickel-based alloy products used in harsh environments. They are used because they resist corrosion, high temperatures, and pressure better than most metals.
Hastelloy C-22 is considered one of the best grades for corrosion resistance, especially against pitting, crevice corrosion, and chemicals.
Hastelloy performs much better than stainless steel in extreme heat and highly corrosive environments, but it is more expensive.
Hastelloy C-22 offers better resistance to pitting and crevice corrosion, while C-276 is more commonly used and performs well in a wide range of chemical applications.
They are expensive because they contain high amounts of nickel and molybdenum, require complex manufacturing processes, and offer superior performance and long service life.
Other types of Hastelloy Alloy Pipes & Tubes
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Supplier and Exporter of Hastelloy C276 / C22 / B2 Pipes & Tubes in Cities
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