ATI produces a comprehensive array of specialty materials and components in the electrical energy industry. Applications using our materials and components include:
ATI is a world leader in development and production of heat and corrosion resistant alloys for natural gas fired power plants.
We offer a full line of alloys for land based gas turbine components as well as products for the various equipment and infrastructure found in the balance of plant.
Land Based Gas Turbines and Microturbines
ATI is a world leader in development and production of heat and corrosion resist?ant alloys for land based gas turbines.
Listed below are some of the common alloys we supply for turbine applications. Product forms include, plate, sheet, strip, forgings, bar, wire, tubing, billet, castings, and fabrications.
Applications
- Turbine & Compressor Disks
- Blades
- Bolting
- Transition Ducts
- Combustion Components
- Spacers
- Shafts
- Impellers
- Cases
- Rings
- Exhaust Frames
- Thermal Spray Coating Alloys
- Inlet Casings
- Recuperators
- Seals
- Bearing Supports
Products
Nickel Alloys
Many nickel alloys have been designed specifically to resist the most severe temperature and stress environments encountered in gas turbines. ATI nickel alloys are used for combustion components, exhaust shrouds, ducting, disks, blades, spacers, bolting, rings, cases and other components
Stainless Steel
High-strength and heat resistant stainless steels are common components of virtually all land based turbines. The martensitic and precipitation hardened grades offer very high strength and fatigue resistance. The most oxidation resistant stainless steels can withstand high temperature corrosion up to 2000°F (1093°C).
Forgings
ATI offers a wide range of forgings for turbine applications in titanium, stainless steels, and low alloy steels. Some end uses include turbine & compressor discs, shafts, seals, bearing supports & impellers.
Natural Gas - Alloys for Balance of Plant and Steam Turbines
ATI has a wide range of alloys for balance of plant applications and steam turbines.
We are a recognized leader in the development and supply of alloys for steam turbine components and tubing for heat exchangers and condensers. As a producer of a wide range of corrosion resistant alloys, we can meet the requirements of virtually any tube or pipe environment. Blades and bolting components used in steam turbines are frequently made of nickel and titanium alloys.
ATI supplies the tubing and piping markets with skelp as flat rolled coil product, discrete plate or continuous mill plate in various alloys.
Uniti Titanium, our joint venture, supplies welded and seamless titanium tubing, welded pipe, and skelp in flat rolled coil and discrete plate.
Products
Nickel Alloys
Nickel alloys offer excellent corrosion resistance to many environments, including chlorides and sulfuric acid, and are virtually immune to stress corrosion cracking. Nickel alloys are used in balance of plant applications where components are exposed to high temperatures exhaust or flue gasses or where corrosive condensates are encountered.
Stainless Steel
Stainless steels offer a wide range of resistance to a variety of environments. Alloys such as ATI 304L™ and ATI 316L™ may be used in relatively mild environments where chloride pitting is of concern. The lean duplexes ATI 2003® LDSS and ATI 2102® LDSS have replaced 300 series in some applications where pitting resistance with higher strength and thermal conductivity is desired. For more severe environments, the super austenitic alloy AL-6XN® or the super ferritic alloys SEA-CURE® and AL 29-4C® alloys are used.
Titanium
ATI’s titanium and titanium alloys and tubing offer excellent corrosion resistance in a wide range of demanding process environments including seawater at elevated temperature. Titanium is resistant to general corrosion, crevice corrosion, microbiologically influenced corrosion (MIC), erosion corrosion and galvanic corrosion making it an ideal material for condensers and waste water evaporators.
For blades where erosion is encountered and high strength to weight ratio is desired titanium alloys can be used.
As a world leading specialty metals company, ATI offers a broad array of high strength, corrosion resistant materials for nuclear energy applications. Our products are integral to the performance of reactors & reactor vessels, steam generators, turbines, cooling towers, wet- and dry-pool storage, transport vessels and repositories.
Nuclear Steam Supply System (NSSS)
ATI is a world leader in the production of alloys for the nuclear industry.
With the widest alloy offerings of any integrated producer in the world, we have an alloy solution for virtually every nuclear environment.
Products
Nickel Alloys
Nickel alloys have many applications in the nuclear steam supply system due to their resistance to stress corrosion cracking and/or high strength. Some of these applications include steam generator tubing, nozzles, penetrations, and fuel assembly components.
Stainless Steel
ATI offers a range of corrosion resistant and high-strength stainless steels including low cobalt variants that have many uses in a nuclear plant. Some important examples include reactor internals, fuel assemblies, process piping, heat exchanger tubes and tube sheets, and Precision Rolled Strip® stainless? for weld overlay applications.
Zirconium
ATI is the world’s largest independent producer of zirconium products for nuclear energy. ATI zirconium products are used for fuel rod cladding, spacers, channel boxes, spacer grids and hardware.
Hafnium
Due to its ability to absorb neutrons, hafnium is used for control rod blades.
Forgings
ATI offers a wide range of forgings for reactor vessels, steam generator components, and pressurized components.
Powder Metals
The homogenous microstructure and resulting superior performance offered by the powder metallurgy process makes it an excellent choice for highly alloyed components such as bearing surfaces.
Alloys for Balance of Plant
Since the 1950s the companies of ATI have assisted the nuclear industry in building new plants ?and and extending the service life of existing licensed facilities.
ATI is a leader in the supply of alloys for balance of plant applications.
Products
Stainless Steel
Stainless steels offer a wide range of resistance to a variety of environments. Cost effective stainless alloys are used in heat exchanger tubing. More highly alloyed stainless steels are often used in the water systems for components such as heat exchanger tubing, condenser tubing, service water piping, and other applications where chloride and microbial resistance is needed. For more severe environments, the super austenitic alloy AL-6XN® or the super ferritic alloys SEA-CURE® and AL 29-4C® alloys are used. AL-6XN® stainless is used for service water piping where resistance to pitting and microbiologically influenced corrosion (MIC) are important.
Titanium
ATI’s titanium and titanium alloys and titanium tubing offer excellent corrosion resistance in a wide range of demanding process environments including seawater at elevated temperatures. Titanium is resistant to general corrosion, crevice corrosion, microbiologically influenced corrosion (MIC), erosion corrosion and galvanic corrosion making it an ideal material for condensers and waste water evaporators.
Spent Fuel
The nuclear industry has long depended on ATI's products for the control mechanisms, transportation and long-term storage containment of spent fuels and high-level waste.
Products
Stainless Steel
Stainless steels offer a wide range of resistance to a variety of environments. Cost effective stainless alloys are used in the manufacture of casks, pool liners and racks, baskets and other components.
Titanium
ATI's titanium and titanium alloys are used for cask bodies, forgings, cask lids, tubesheets and other components.
Zirconium
ATI is the world's largest independent producer of zirconium products for nuclear energy. ATI zirconium products are used extensively to handle the aggressive chemicals found in spent fuel reprocessing plants.
Forgings
ATI offers a wide range forgings that are used for cask lids and other components.
Traditional boiler-based power plants contain environments that are extremely challenging with regard to materials degradation.
These environments can include high wear seen in coal handling and crushing, high temperatures and corrosive gasses seen in combustion systems, corrosive condensates formed in the flue gas system, and corrosive water used in heat exchangers and pollution control.
With the widest range of materials in the industry, we have the products to fit virtually any application.
Boiler Systems
Boiler system environments are extremely challenging with regard to materials degradation.
The high temperatures and corrosive gasses seen in the combustion systems, along with the corrosive condensates formed as the gasses cool often require the most corrosion resistant grades that exist.
With the widest range of materials in the industry, ATI has a solution to fit virtually any application.
Applications
- Boiler Weld Overlay
- Wallpaper
- Pipe and Tube
- Heat Exchanger Tubing
Products
Nickel Alloys
Combustion in boiler systems can generate highly corrosive gasses that may contain halides, sulfur compounds, water vapor, carbon compounds, etc. Nickel alloys are often used to resist these environments often as weld overlay or cladding. Nickel alloys are also very resistant to the wet condensates found downstream of the boiler system and can be found in pipe and tube, ducting, dampers, and other components that are exposed to flue gas.
Stainless Steel
General corrosion resistance and resistance to chlorides are required properties of alloys used throughout a boiler fired plant. Stainless alloys are commonly used for piping and tubing in areas where heat and corrosion resistance are needed.
Alloys for Pollution Control
As a producer of the widest range of corrosion resistant alloys in the metals industry, ATI can meet virtually all of the requirements of the pollution control market. Many? ATI alloys were developed specifically to resist the types of environments found in pollution control environments. From cost effective stainless alloys, to some of the most corrosion resistant nickel based alloys available, ATI is a complete source of specialty metals solutions for the pollution control industry.
Applications
- Absorber Towers
- Ducting
- Dampers
- Wallpaper
- Fans
- Turning Vanes
- Slurry Piping
- Wet ESP Electrodes
- Service Water
- Trays
- Heat Exchanger Tubing
Products
Nickel Alloys
The Flue Gas Desulphurization (FGD) environment often requires resistance to both chlorides and sulfuric acid. For the most severe conditions, such as wet FGD absorber inlet ducts, outlet ducts, chimney flues, damper seals, etc. Nickel alloys are often required. The most commonly used alloys are listed on the right.
Stainless Steel
Resistance to chlorides is a requisite property of alloys used in FGD applications. The level of chlorides will be dependent on many factors, including the chloride content of the coal being burned, the extent of water treatment and replacement (also referred to as the rate of "blowdowns"). Stainless steels are the alloys of choice for FGD absorbers. ATI offers a wide range of stainless steels to meet the specific requirements of each pollution control system.
Titanium
ATI’s titanium and titanium alloys and titanium tubing products offer excellent corrosion resistance in a wide range of demanding process environments. Titanium is resistant to general corrosion, crevice corrosion, microbiologically influenced corrosion (MIC), erosion corrosion and galvanic corrosion. Applications in pollution control include chimney liners and FGD scrubber components.
Boiler Systems - Alloys for Balance of Plant
ATI has a wide range of alloys for balance of plant applications. ATI is a recognized leader in the development and supply of alloys for tubing for heat exchangers and condensers. As a producer of a wide range of corrosion resistant alloys, ATI can meet the requirements of virtually any tube or pipe environment. ATI supplies the tubing and piping markets with skelp as flat rolled coil product, discrete plate or continuous mill plate in various alloys. Uniti Titanium?, our joint venture, supplies welded and seamless titanium tubing, welded pipe, and skelp in flat rolled coil and discrete plate.
Products
Nickel Alloys
Nickel alloys offer excellent corrosion resistance to many environments, including chlorides and sulfuric acid, and are virtually immune to stress corrosion cracking. Nickel alloys are used in balance of plant applications where components are exposed to high temperatures exhaust or flue gasses or where corrosive condensates are encountered.
Stainless Steel
Stainless steels offer a wide range of resistance to a variety of environments. Cost effective stainless alloys are used in tanks and coal silos, structural support, bag house components, and many other applications. Alloys such as ATI 304L™ and ATI 316L™ stainless steels may be used in relatively mild environments where chloride pitting is of concern. Lean duplexes, such as ATI 2003®and ATI 2102®, have replaced 300 series in some applications where pitting resistance with higher strength and thermal conductivity is desired. More highly alloyed stainless steels are often used in the water systems for components such as heat exchanger tubing, condenser tubing, service water piping, and other applications where chloride and microbial resistance is needed. For more severe environments, the super austenitic alloy AL-6XN® or the super ferritic alloys SEA-CURE® and AL 29-4C® alloys are used.
Titanium
ATI's titanium and titanium alloys and titanium tubing offer excellent corrosion resistance in a wide range of demanding process environments including seawater at elevated temperatures. Titanium is resistant to general corrosion, crevice corrosion, microbiologically influenced corrosion (MIC), erosion corrosion and galvanic corrosion making it an ideal material for condensers, and waste water evaporators.
Renewable energy is the fastest growing source of electrical generation in the developed world. The effort to reduce airborne carbon levels as well as traditional pollutants continues to drive the power market to expand to deployment of clean, renewable sources. ATI offers a unique product line that covers virtually every renewable energy technology.
Solar, Wind, Hydro, Tidal, Geothermal
Our unsurpassed product offerings can be found in virtually every renewable energy technology. From large cast iron castings for wind turbines, to ultra-thin Precision Rolled Strip® titanium for solar energy, ATI has the specialty metals solutions for this growing market.
Applications
- Concentrated Solar
- Thermal Tubing
- Geothermal Well Casing
- Geothermal Tubing
- Molten Salt Tanks
- PV Substrate
Products
Nickel Alloys
Nickel alloys are widely used to resist high-temperatures found in concentrated solar thermal systems. Examples include boiler components in solar towers and heat exchangers in stirling engines. The corrosion resistant grades are found in some geothermal applications where hot corrosive brines are encountered.
Stainless Steel
The combination of strength and corrosion resistance make stainless steels a popular choice for a wide range of renewable energy applications. Some applications include tubing for concentrated solar thermal systems, molten salt tanks for energy storage, geothermal condenser tubing and piping and many more.
Titanium
ATI offers titanium and titanium alloys offer excellent corrosion resistance and high strength. Titanium alloys may be used for geothermal energy as well casings, brine piping or condenser tubing. Precision Rolled Strip® titanium alloys are also used in some solar energy applications.
Fuel Cells
Fuel cells are an emerging technology to produce electricity efficiently and cleanly from conventional and unconventional fuels, including pure hydrogen.
Considerable effort is being expended to commercialize fuel cells in numerous areas, including centralized and distributed electricity generation, portable power/battery replacement and motive and auxiliary power for automotive and mass transit applications. There are several different types of fuel cells which operate under conditions ranging from ambient temperatures and pressures to temperatures as high as 2000°F (1093°C) under high pressures.
The result is a set of unique challenges for materials selection, as critical components in a fuel cell are often required to serve structural and electrical functions simultaneously. We are a recognized leader in the field of fuel cell materials.
Applications
- SOFC Interconnects
- High Temperature
- Ducting and Manifolds
- Bipolar Plates
Products
Nickel Alloys
Nickel alloys find applications in both low and high temperature fuel cells for their resistance to aqueous corrosion, molten salt corrosion, high temperature oxidation and excellent strength and creep resistance at elevated temperatures. Common applications are bipolar plates/current collectors and balance of plant components such as high temperature fuel reformers, containment structures and heat exchangers.
Stainless Steel
The combination of strength, corrosion resistance, manufacturability and wide commercial availability exhibited by stainless steels result in their application in most types of fuel cells. Ferritic stainless steels are often specified for solid oxide fuel cell (SOFC) interconnects due to a unique combination of oxidation resistance and thermal compatibility with the brittle ceramic components which make up the active region of the SOFC. Austenitic stainless steels find application as bipolar plates in PEM fuel cells, where high corrosion resistance and surface conductivity are required and in molten carbonate fuel cells (MCFC), where resistance to attack by molten salts is needed. The basic properties of austenitic stainless steels also make them useful for balance of plant applications.
Titanium
ATI offers titanium and titanium alloys offer excellent corrosion resistance and high strength. Titanium is used for the most demanding low-temperature fuel cell applications, where maximum corrosion resistance is required.
