Go to GlobalSpec.com Home
Newsletter   FREE GlobalSpec e-Newsletters
Receive the latest news, trends, and technology relevant to your work.
(See Titles)

Niobium (Nb) for Hot Concentrated Nitric Acid: Material Selection & Field Experiences with Nb-Shell & Tube Heat Exchangers

From ATI Wah Chang
 

 

The highly acid, oxidizing conditions in parts of nitric acid plants severely tax conventional materials such as high-purity aluminum and high-silicon stainless steel. Long-term field-testing of these materials along with tantalum, tantalum-25%tunsten and niobium showed excellent performance for the reactive metals.

Products & Services
Nonferrous metals and nonferrous alloys are not based on iron and include alloys of aluminum, copper, titanium, zinc, nickel, cobalt, tungsten, precious metals, refractory metals. Learn more about Nonferrous Metals and Alloys
Master alloys and alloying additives are alloy element concentrates, grain refiners, hardeners, deoxidants and other agents added into a melt or metal powder blend to produce a particular alloy, modify a melt or alter processing characteristics. Learn more about Master Alloys and Alloying Additives
Tungsten and tungsten alloys are refractory metal or alloys with a very high melting point and high density. Tungsten and tungsten alloys are used to fabricate light bulb filaments, PVD evaporation crucibles, EDM electrodes, and electrical contacts. Search by Specification | Learn more about Tungsten and Tungsten Alloys
Molybdenum and molybdenum alloys are refractory metal and alloys with a very high melting point and a relatively high density. Molybdenum and molybdenum alloys are used to fabricate PVD evaporation crucibles, electrodes, and electrical contacts. Search by Specification | Learn more about Molybdenum and Molybdenum Alloys
Bimetals and clad alloys consist of two or more different alloy layers that are integrally bonded into a metal plate, strip, sheet, or other stock shape. Learn more about Bimetals and Clad Alloys
Product Announcements
Aerospace Defense Coatings Of Georgia - Steel Passivation Capabilities
Passivating steel removes all impurities from the part or component and creates a hard non-reactive surface film that inhibits further corrosion. (read more)
Tantaline Inc. - Corrosion Resistant Plug Valves For Hot Acids
Tantaline offers the most corrosion and acid resistant plug valves commercially available for use in hot acid environments like HCl and H2SO4 at costs less than nickel alloys. (read more)
FLUX-GERÄTE GMBH - Pump Kit For Concentrated Acids and Alkalis
FLUX Pump Kits include everything for that quick start required by todays busy engineers and buyers. This pump kit is used for transferring concentrated acids and alkalis like chromic acid, nitric... (read more)
Ed Fagan, Inc. - Niobium aka Columbium Refractory Alloys
Niobium, also termed Columbium, is a shiny grey metal that takes on a bluish tinge when exposed to air at room temperature. (read more)
Tantaline Inc. - Acid Resistant Cam and Groove Couplings
Tantaline treated acid resistant cam & groove couplings offer the most corrosion resistance commercially available at prices competitive to Hastelloy cam & groove couplings and quick couplers. (read more)
Garlock Helicoflex - Spring Energized Helicoflex Seals
An elastic metal seal with the benefits of an elastomer and traditional metal seal. The seal is composed of a helical spring with ductile outer metal jackets which yield under compression to create a... (read more)
Asahi/America, Inc. - Polytetra Series All-Thermoplastic Heat Exchangers
Asahi/America has expanded their line of engineered high purity and industrial fluid flow products to include Polytetra Series shell and tube heat exchangers. Polytetra Series are all-thermoplastic,... (read more)
PIERCAN USA, INC. - Polyurethane and Hypalon Gloves
Piercan USA's Dry Box Gloves are for the most critical of applications or where the product is of critical nature and zero contamination is the essential. (read more)
Topics of Interest
The family of elements, known as the reactive metals, consist of Titanium, Zirconium, Hafnium (Group IV B), Vanadium, Niobium, Tantalum (Group V B). All but Vanadium exhibit a tenaciously adherent,... (Read More)
Refractory and reactive metals include boron (B), tungsten (W), tantalum (Ta), molybdenum (Mo), niobium (Nb) / columbium (Cb), zirconium (Zr), hafnium (Hf), thorium (Th), vanadium (V), chromium (Cr),... (Read More)
Tantalum, niobium and zirconium are known as refactory metals because their melting points are greater than that of platinum, 1750 C. The high melting point combined with excellent corrosion... (Read More)
Little has been published on the effects of hydrogen on Tantalum and Niobium materials of construction for pressure related equipment. It has been found that the presence of hydrogen, or media... (Read More)
Teledyne Wah Chang Albany (TWCA) is a major supplier of zirconium, hafnium, niobium, titanium and vanadium metals and their alloys. Commercial application of these products ranges from the use of... (Read More)
See more product announcements for Nonferrous Metals and Alloys
Open Die "Hand" Forgings

Open Die "Hand" Forgings
Aluminum Precision Products, Inc.


TPL's Explosive Cladding

TPL's Explosive Cladding
TPL, Inc.


Custom Non Ferrous Metals & Alloys

Custom Non Ferrous Metals & Alloys
Yamato Alloy America


11 See more product announcements for Nonferrous Metals and Alloys