Inconel Pipe

Product Details:

INCONEL alloy X-750 (UNS N07750/W. Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. Alloy X-750 also has excellent properties down to cryogenic temperatures. 

The economics of INCONEL alloy X-750 coupled with its availability in all standard mill forms has resulted in applications in a wide variety of industrial fields. In gas turbines, it is used for rotor blades and wheels, bolts, and other structural members. INCONEL alloy X-750 is used extensively in rocket-engine thrust chambers. Airframe applications include thrust reversers and hot-air ducting systems. Large pressure vessels are formed from INCONEL alloy X-750. Other applications are heat-treating fixtures, forming tools, extrusion dies, and test machine grips. For springs and fasteners, INCONEL alloy X-750 is used from sub-zero to 1200°F. 

Depending on the application and the properties desired, various heat treatments are employed. For service above 1100°F, particularly where loads are to be sustained for long times, optimum properties are achieved by solution treating (2100°F) plus stabilisation treating (1550°F) plus precipitation treating (1300°F). For service below 1100°F, the alloy may be strengthened by precipitation treating after hot or cold working or by precipitation treating after equalising or solution treating. A furnace-cooling treatment is also used to develop optimum properties for some applications. 

The various heat treatments and the properties developed are described under the section on Mechanical Properties. 

Property values in this bulletin – the results of extensive testing – are typical of the alloy but, unless shown as limiting, should not be used as specification values.


Available Diameter:

• 1/2 inch, 1 inch, 2 inch, 3 inch, 4 inch, >4 inch

Limiting Chemical Composition (%)

• Nickel (plus Cobalt)…………………………………………….70.00 min.
• Chromium………………………………………….14.0-17.0
• Iron……………………………………………………….5.0-9.0
• Titanium…………………………………………..2.25-2.75
• Aluminum…………………………………………………..0.40-1.00
• Niobium (plus Tantalum) ………………………………. 0.70-1.20
• Manganese………………………………………………………..1.00 max.
• Silicon……………………………………………………………….0.50 max.
• Sulfur……………0.01 max.
• Copper……………0.50 max.
• Carbon… ………0.08 max.
• Cobalt1 ………….1.00 max

Product Details:

Incoloy  800HT are nickel-iron-chromium alloys with good strength and excellent resistance to oxidation and carburization in high-temperature exposure. These nickel steel alloys are identical except for the higher level of carbon in alloy 800H, and the addition of up to 1.20 percent aluminum and titanium in alloy 800HT. Incoloy 800 was the first of these alloys and it was slightly modified into Incoloy 800H. This modification was to control carbon (.05-.10%) and grain size to optimize stress rupture properties. Incoloy 800HT has further modifications to the combined titanium and aluminum levels (.85-1.20%) to ensure optimum high temperature properties. The nickel alloy is dual certified (800H/HT) and combines the properties of both forms. Incoloy 800H/HT alloy was intended for high temperature structural applications. The nickel content makes the alloys highly resistant to both chloride stress-corrosion cracking and to embrittlement from precipitation of sigma phase. The general corrosion resistance is excellent. In the solution annealed condition, alloys 800H and 800HT have superior creep and stress rupture properties.

Alloy 800HT (UNS N08811) Chemical Composition, %:

Product Details:

Inconel 601 is a solid solution nickel chromium alloy for high temperature heat resistance. It has excellent oxidation resistance. Inconel 601 also has good resistance to carburising but should not be used in atmospheres containing sulphur, particularly reducing sulphur. Inconel 601 has good resistance to nitriding in dissociated ammonia, and is only outperformed by Inconel 600 in this application. Inconel 601 has good strength, ductility and toughness, and can be used at cryogenic temperatures.

 

Typical Applications:

Thermal processing equipment – baskets, trays, fixtures, radiant tubes, muffles, retorts, flame shields, woven wire conveyers, burner nozzles and electrical resistance heating wires. Other applications include thermocouple protection tubes, process heaters, condenser tubes, catalyst supports in nitric acid manufacture, exhaust systems in gasoline engines and combustion chambers, superheater tube supports and ash handling in power generation.

Chemical Composition:

• Element %
• Nickel 58.0-63.0
• Chromium 21.0-25.0
• Iron ~ 16
• Aluminium 1.0-1.7
• Carbon 0.10 max
• Manganese 1.5 max
• Silicon 0.50 max
• Sulphur 0.015 max
• Copper 1.0 max

Available Size:

• 1/2 inch, 1 inch, 2 inch, 3 inch, 4 inch

Product Details:

INCOLOY alloys belong to the category of super austenitic stainless steels. These alloys have nickel-chromium-iron as the base metals, with additives such as molybdenum, copper, nitrogen and silicon. These alloys are known for their excellent strength at elevated temperatures and good corrosion resistance in a variety of corrosive environments.

INCOLOY alloy 800 is an alloy of nickel, iron and chromium. The alloy is capable of remaining stable and maintaining its austenitic structure even after long time exposures to high temperatures. Other characteristics of the alloy are good strength, and high resistance to oxidizing, reducing and aqueous environments. The standard forms in which this alloy is available are round, flats, forging stock, tube, plate, sheet, wire and strip.

This datasheet will look into the chemical composition, properties and applications of INCOLOY 800.

Chemical Composition:

The chemical composition of INCOLOY alloy 800 is given in the following table.

Product Details:

The limiting chemical composition of INCONEL alloy 600 is shown in Table 1. The high nickel content gives the alloy resistance to corrosion by many organic and inorganic compounds and also makes it virtually immune to chloride-ion stress-corrosion cracking. Chromium confers resistance to sulfur compounds and also provides resistance to oxidizing conditions at high temperatures or in corrosive solutions. The alloy is not precipitation hardenable; it is hardened and strengthened only by cold work.

The versatility of INCONEL alloy 600 has led to its use in a variety of applications involving temperatures from cryogenic to above 2000°F (1095°C).

The alloy is used extensively in the chemical industry for its strength and corrosion resistance. Applications include heaters, stills, bubble towers and condensers for processing of fatty acids; evaporator tubes, tube sheets and flaking trays for the manufacture of sodium sulfide; and equipment for handling abietic acid in the manufacture of paper pulp.

The alloy’s strength and oxidation resistance at high temperatures make it useful for many applications in the heat-treating industry. It is used for retorts, muffles, roller hearths and other furnace components and for heat-treating baskets and trays.

In the aeronautical field, INCONEL alloy 600 is used for a variety of engine and airframe components which must withstand high temperatures. Examples are lockwire, exhaust liners and turbine seals.

INCONEL alloy 600 is used in the electronic field for such parts as cathode-ray tube spiders, thyratron grids, tube support members and springs. The alloy is a standard material of construction for nuclear reactors. It has excellent resistance to corrosion by high-purity water, and no indication of chloride-ion stress-corrosion cracking in reactor water systems has been detected. For nuclear applications, the alloy is produced to exacting specifications and is designated INCONEL alloy 600T.

Limiting Chemical Composition, %

• Nickel (plus Cobalt) …………………….72.0 min.
• Chromium …………………………………14.0-17.0
• Iron  ……………………………..6.00-10.00
• Carbon ……………………….0.15 max.
• Manganese …………………….1.00max
• Sulfur ………………………..0.015 max.
• Silicon …………………………….. 0.50max.
• Copper …………………….0.50 max