Grupo Compás
■ Inconel ■
Phone: +34 93 4351672
Fax: +34 93 5504076
Alloy Valves
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254 SMO F44 Valves
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Aluminium Bronze Valves
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Check Valves
Control Valves
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Cryogenic Valves
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Titanium
Alloy 20
Super Duplex
Monel
254 SMO F44
Inconel
Incoloy
Hastelloy
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Material overview
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About Us
■ Inconel -- material overview ■
Grupo Compás generally holds inconel gate, globe, check, ball and butterfly valves.
As a valve stockist, we hold valves in exotic materials such as titanium, hastelloy, duplex, super duplex, monel, incoloy, inconel, alloy 20, both in stock and can also deliver against tight lead times.
Inconel is a registered trademark of Special Metals Corporation that refers to a family of austenitic nickel-chromium-based superalloys. Inconel alloys are typically used in high temperature applications. It is often referred to in English as "Inco" (or occasionally "Iconel"). Common trade names for Inconel include: Inconel 625, Chronin 625, Altemp 625, Haynes 625, Nickelvac 625 and Nicrofer 6020.
Composition
Different Inconels have widely varying compositions, but all are predominantly nickel, with chromium as the second element.
PropertiesInconel alloys are oxidation and corrosion resistant materials well suited for service in extreme environments. When heated, Inconel forms a thick, stable, passivating oxide layer protecting the surface from further attack. Inconel retains strength over a wide temperature range, attractive for high temperature applications where aluminum and steel would succumb to creep as a result of thermally-induced crystal vacancies (see Arrhenius equation). Inconel's high temperature strength is developed by solid solution strengthening or precipitation strengthening, depending on the alloy. In age hardening or precipitation strengthening varieties, small amounts of niobium combine with nickel to form the intermetallic compound Ni3Nb or gamma prime (?'). Gamma prime forms small cubic crystals that inhibit slip and creep effectively at elevated temperatures.
Machining
Inconel is a difficult metal to shape and machine using traditional techniques due to rapid work hardening. After the first machining pass, work hardening tends to elastically deform either the workpiece or the tool on subsequent passes. For this reason, age-hardened Inconels such as 718 are machined using an aggressive but slow cut with a hard tool, minimizing the number of passes required. Alternatively, the majority of the machining can be performed with the workpiece in a solutionised form, with only the final steps being performed after age-hardening. External threads are machined using a lathe to "single point" the threads, or by rolling the threads using a screw machine. Holes with internal threads are made by welding or brazing threaded inserts made of stainless steel. Cutting of plate is often done with a waterjet cutter. Internal threads can also be cut by single point method on lathe, or by threadmilling on a machining center. New whisker reinforced ceramic cutters are also used to machine nickel alloys. They remove material at a rate typically 8 times faster than carbide cutters.
Joining
Welding inconel alloys is difficult due to cracking and microstructural segregation of alloying elements in the heat affected zone. However, several alloys have been designed to overcome these problems. The most common way to weld inconel is by using a TIG welder with the appropriate filler metal.
Inconel alloys
• Inconel 600: Solid solution strengthened
• Inconel 625: Acid resistant, good weldability
• Inconel 690: Low cobalt content for nuclear applications
• Inconel 718: Gamma double prime strengthened with good weldability
• Inconel 751: Increased aluminum content for improved rupture strength in the 1600 F range
• Inconel 939: Gamma prime strengthened with good weldability
We generally hold the following material range: 317L/A744 GR. CG3M, 317/A744 GR. CG8M, 347/A744 GR. CF8C, Alloy 20/A744 GR. CN7M, CD4MCU/A744, Ferrallium 255, Duplex 2205 CD3MN, Monel/A494 GR. M35-1, Nickel/A494 GR. CZ100, Inconel/A494 GR. CY40-CL 1 & 2, Incoloy 800/A351 CTl 5C, Hastelloy B/A494 GR. N12MV, Hastelloy C/A494 GR. CW12MW, Hastelloy C276, Inconel 625, Titanium/B367 -69 GR. C3, Zirconium/B752 GR. 702C & 705C, Avesta 6moly 254 SMO/A351 CK3MCUN.
Actuators: we can supply pneumatic, electric and hydraulic actuators with valves when required.
For quotations or further information about our products, please contact Heather Smith (International eCommerce) by phone +34 93 435 1672 or by email: alloy-valves@alloy-valves.com
■ A182 F61, A182 F91, A182 F321, A182 F347, A182 F347H, A182 F44, Duplex A182 F51, Duplex 1.4462, Duplex 1.4470, Duplex UNS S31803, Duplex UNS S32205, Super Duplex UNS S32750, Super Duplex UNS S32760, Super Duplex 1.4501, Super Duplex 1.4410, Super Duplex 1.4507, Ferralium 255, Super Duplex A182 F53, Super Duplex A182 F55, A182 F91, 254 SMO, 6moly, 6mo, Duplex A995 Gr. 4A CD3MN, Duplex A890 Gr. 4A CD3MN, Duplex 2205, Super Duplex A890 Gr. 5A CEMN, Super Duplex A890 Gr. 6A CD3MWCUN, Alloy 20, Carpenter 20, A351 CN7M, A20 UNS 08020, Titanium A182 316Ti, Titanium Gr. 2, Titanium-Palladium Gr. 7, B367 Gr. 2, B381 Gr. II, UNS N08020, Monel 400, Monel K500, Monel A494 M35-1, Monel UNS N04400, Avesta 904L, Inconel A494-CY40, Inconel 600, Inconel 625, Inconel UNS N06600, Inconel UNS N06625, Incoloy 800, Incoloy 800H, Incoloy 800HT, Incoloy 825, Incoloy UNS N08800, Incoloy UNS N08825, Hastelloy C276, Hastelloy C22, Hastelloy B3, Hastelloy A494 CW12MW, A182 F5, A182 F22, A216 WC6, A216 WC9, A217 C5, A182 F11, A351 CG8M, Aluminium Bronze Valves■
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Grupo Compás. Barcelona. Spain..Tlf.: (+34) 93 435 1672...Fax: (+34) 93 550 4076.. Email: alloy-valves@alloy-valves.com
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