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Making duplex steel plates requires careful control over the internal structure for optimal results. These plates offer a combination of high strength and excellent resistance to corrosion. Many industries rely on this material for demanding applications where durability is essential.
Duplex plates are a type of steel with a special internal makeup. They contain a mixture of two different microscopic structures called austenite and ferrite. This blend provides a good combination of toughness and resistance to various forms of corrosion.
Top 10 Duplex Plate Suppliers list
Name | Country | Founding Year |
AK Steel | United States | 1899 |
Aperam | Luxembourg | 2011 |
Böhler Edelstahl | Austria | 1870 |
Cleveland-Cliffs | United States | 1847 |
JFE Steel | Japan | 2002 |
NSS Nippon Steel & Sumitomo Metal | Japan | 2012 (via merger) |
Outokumpu | Finland | 1914 |
POSCO | South Korea | 1968 |
SBS Steel | Italy | 1995 |
ThyssenKrupp | Germany | 1999 |
AK Steel
Year Founded: 1899
Main Products
- Flat-rolled carbon steel
- Stainless steel (austenitic, ferritic, martensitic, duplex, and precipitation hardening)
- Electrical steel
- Carbon and stainless steel tubing
- Hot and cold stamped components
- Specialty steel products
Company Description
AK Steel started as The American Rolling Mill Company, or ARMCO, located in Middletown, Ohio. George M. Verity got the company going way back in 1899. His main idea was to build a business just for making rolled steel. The Middletown Works plant was really important for manufacturing, and it kept running for a long, long time.
Later on, in 1989, the company got together with Kawasaki Steel Corporation from Japan. That partnership brought in several more production facilities. It also had something to do with the name changing later. The main office moved over to Pittsburgh, Pennsylvania in 1993, and the company became AK Steel Holdings – the “AK” sort of nodded to Armco and the big investment from Kawasaki.
Then, by 1994, the name AK Steel had fully replaced Armco. It was a pretty big change for the company’s identity. Over the next few decades, AK Steel opened up more operations in different spots across the US. Think places like Ashland, Kentucky; Butler, Pennsylvania; and Coshocton, Ohio, plus some other manufacturing sites.
Now, about their duplex stainless steel – that’s a pretty important part of AK Steel’s specialty steel line. Duplex steels are interesting because their internal structure is a mix of two types: austenite and ferrite. This blend gives them combined properties, taking strengths from both kinds. Basically, it makes duplex steel strong and resistant to corrosion, which is great for tough jobs.
Because the company knows how to make duplex plates well, they’ve become a known supplier in that specific market area. AK Steel makes duplex stainless steel plates for situations needing top-notch resistance to problems like stress corrosion cracking or pitting. You find these plates used in some demanding environments where materials have to hold up.
NITRONIC® 19D is one of the specific duplex grades AK Steel offers. What’s good about it? Well, it handles repeated heating and cooling cycles without easily getting damaged (that’s called cyclic oxidation resistance). Plus, it’s strong and really fights off stress corrosion cracking.
Type 2205 is another key duplex steel they produce. It’s known for resisting pitting and general corrosion extremely well. It also combines high strength with resistance to stress corrosion cracking. Properties like these make AK Steel’s duplex plates, especially this Type 2205, a good fit for the oil and gas industry, chemical processing plants, places that take salt out of water (desalination), and for building pressure vessels.
Making a duplex stainless steel plate isn’t simple; AK Steel has to carefully control that austenite-ferrite mix. Getting the balance just right is key to the final strength and corrosion resistance. They also add nitrogen to the newer duplex types. Adding nitrogen helps make the steel stronger and easier to weld, fixing some older issues people sometimes had with duplex steels.
Aperam
Year Founded: 2011
Main Products
- Stainless steel coils and sheets
- Duplex stainless steel plates and sheets
- Electrical steel products
- Specialty steel alloys
- Hot and cold-rolled steel products
- Carbon and high alloy steels
Company Description
Aperam, headquartered in Luxembourg, started up as its own separate business on January 25, 2011. It used to be part of ArcelorMittal, a huge steel company, but they decided to split off the stainless steel part. Most of ArcelorMittal’s shareholders agreed this was a good idea. This move let Aperam really focus just on stainless and specialty steels.
The company doesn’t just operate out of Luxembourg, though. Its main factories are actually spread out across three countries: Belgium, France, and Brazil. Because Aperam has these locations, it can sell products to customers in something like 40 countries all over the world. That makes Aperam a pretty important player when you look at the global steel market.
People know Aperam for being creative, especially with duplex stainless steel plates. Duplex stainless steel is a really big deal for Aperam. It’s got a special mix inside, like two types of steel structures – they call them austenitic and ferritic – combined together. This mix gives the steel some great properties.
What kinds of properties? Well, Aperam’s duplex plates are strong. Very strong, nearly double the strength of the usual stainless steel types. Plus, they’re excellent at resisting rust and other corrosion. That makes these plates just right for tough jobs in difficult environments where you need metal that’s both strong and doesn’t break down easily from corrosion.
These duplex plates are also good at fighting off specific problems. One is stress corrosion cracking – that’s when metal cracks under pressure in a corrosive place. Another is intergranular corrosion, which eats away at the metal’s edges internally. Having resistance to these means the plates last a long time, even when things get rough.
There’s another advantage. Duplex steel often uses less nickel compared to other stainless steels. Nickel prices can jump around, you know? Using less can help keep the final cost down for the people buying the steel.
Aperam makes a few different kinds of duplex plates for different jobs. One is called DX2202 (or 1.4062). It handles corrosion about as well as 304L steel when hot, and like 316L steel at normal temperatures, but it’s stronger. You might see this DX2202 used for things like road crash barriers, walkways over roads, pipes for drinking water, equipment for removing salt from water, and different kinds of storage tanks.
Then there’s the DX2205 (1.4462) grade. This one’s for even tougher tasks because it has amazing corrosion resistance, and it’s really strong. They also make a top-level version, the DX2507 (1.4410) superduplex grade. It’s so tough that it passed special tests called NORSOK, meaning it’s cleared for use in super harsh places, like out on offshore oil and gas rigs.
Böhler Edelstahl
Year Founded: 1870
Main Products
- Duplex and super duplex stainless steels
- Tool steels and high-speed steels
- Case hardening steels
- Bearing steels
- Heat treatable steels
- Precipitation hardening steels
- Ferritic and martensitic steels
- Austenitic steels
- Nickel-based alloys
Company Description
Böhler Edelstahl, located in Vienna, Austria, got its start way back, founded by brothers Albert and Emil Böhler. Their first company, “Gebrüder Böhler & Co.,” was basically a steel trading business. The brothers would buy steel from different makers and then sell it from their office in Vienna; they turned out to be really good at the business side of things, and the company got bigger fast.
Things really shifted gears in 1894. That’s when the company bought the Kapfenberg steel mill over in Styria, Austria. This move meant they weren’t just traders anymore; they were manufacturers, actually making the steel themselves. Kapfenberg became the main place for production, and it still is today. You’ll find the company headquarters right there at Mariazeller Str. 25, 8605 Kapfenberg, Austria.
After the Second World War, the Austrian government took over the company in 1946. It went through quite a few changes after that. A pretty big deal happened in 1991: the Austrian Böhler Group teamed up with the Swedish Uddeholm Group. Together they formed the “Böhler-Uddeholm Group”—suddenly they were the world’s biggest tool steel maker, selling specialty steels all over the place.
Fast forward to 2007, and another company, voestalpine AG, acquired Böhler-Uddeholm. It didn’t take long; by 2008, Böhler-Uddeholm was fully folded into the voestalpine Group’s Special Steel Division. Names changed too; in 2011, Böhler-Uddeholm AG became voestalpine Edelstahl GmbH. Now, the operation runs under the name voestalpine BÖHLER Edelstahl GmbH & Co KG.
Today, this company is a major player globally, known for supplying top-notch special steels. They’ve got something like 250 different steel brands under their belt. Sales-wise, they bring in roughly €1 billion each financial year, which is quite a lot. The plant itself can churn out up to 205,000 tons of these high-performance steels every year, sending about 155,000 tons of that out to customers worldwide.
Just recently, in 2023, they opened what they’re calling “the world’s most modern special steel plant.” People see it as a major technological leap in making those high-performance steels needed for industries like aviation, cars, and oil and gas. This new place uses tons of digital tech and super-advanced manufacturing methods. Very modern stuff.
A really important part of Böhler Edelstahl’s product lineup is their duplex and super duplex stainless steel plates. Duplex stainless steel is interesting because its internal makeup, its microstructure, is about a 50/50 mix of two types of steel phases: ferritic and austenitic. Getting that perfect balance requires careful control over the ingredients – elements like chromium, molybdenum, and silicon help form the ferrite part, while nickel, nitrogen, and manganese help form the austenite part.
They don’t just make standard duplex steels; they also offer super duplex grades, which are even tougher. Think BÖHLER A930 (also called UNS S32550 or 1.4507) and BÖHLER A913 (UNS S32750). These guys have better corrosion resistance, measured by something called a PREN score, which is usually between 39 and 45 for these grades. They typically contain around 25% chromium, 3.5% molybdenum, and nitrogen between 0.22% and 0.3%.
The big advantage of Böhler’s duplex plate? It’s the combination of properties you get. These duplex steels are roughly double the strength of typical austenitic grades, but they still hold up incredibly well against corrosion. A key feature is how well they resist stress corrosion cracking, especially in harsh conditions where chlorides are present, like seawater environments.
Cleveland-Cliffs
Year Founded: 1847
Main Products
- Flat-rolled carbon steel
- Stainless steel (including duplex stainless steel)
- Electrical steel
- Steel plates
- High-strength low alloy (HSLA) steel
- Carbon and stainless steel tubing
- Hot and cold stamping products
- Tooling components
Company Description
Cleveland-Cliffs, headquartered in Cleveland, Ohio, started out way back in 1847. It began as the Cleveland Iron Mining Company, just operating mines, you see. Over time, it grew into the biggest maker of flat-rolled steel in North America.
The company got its current name after merging with Iron Cliffs Company in 1890. A man named William G. Mather was really important; he led the company from 1890 all the way to 1947. During that time, Cleveland-Cliffs got a lot bigger, pulling its mining together and getting into making steel too.
Their main office is in Cleveland? It’s in a great spot right on the Cuyahoga River. That location means easy access to the Port of Cleveland for shipping on the Great Lakes. Plus, it connects well to highways and railroads for moving materials around.
Cleveland-Cliffs is known for making top-quality steel using modern technology. The steel is built for tough jobs where performance really matters. They actually handle the whole process themselves. From digging the raw stuff out of the ground to making the final steel products.
Controlling everything from start to finish like that gives them an edge. It helps make sure the quality is good all the way through. People call that vertical integration.
Now, about duplex stainless steel plate – Cleveland-Cliffs is a major player there. Duplex stainless steel is interesting because it mixes properties from two kinds of stainless steel. This mix results in a material that’s super strong and also really good at resisting rust and other corrosion.
What does that mean? Well, their duplex plate has about twice the yield strength compared to regular austenitic stainless steels. It’s also great at fighting off things like stress corrosion cracking and pitting damage. This makes the plate super useful for equipment that has to survive harsh places.
You’ll find this duplex plate being used in chemical processing gear and out on offshore oil and gas platforms. It’s also used in plants that remove salt from water and inside pressure vessels. Anywhere you need serious strength and top-notch protection against corrosion, basically.
To make sure the duplex plate performs its best, Cleveland-Cliffs carefully controls the ingredients. They manage the amounts of elements like chromium, nickel, molybdenum, and nitrogen. Getting that mix right is crucial for the steel’s final properties.
They also put a lot into research over at their big Research and Innovation Center in Middletown, Ohio. It’s a 135,000 square foot place where they work on making the duplex plate even better. They’re always trying to meet what customers need next.
The factories use up-to-date equipment designed just for making high-quality plates. Using advanced tech helps keep measurements exact and ensures the steel quality is the same throughout each plate. That consistency means reliable performance when the steel is used for important jobs. Cleveland-Cliffs makes this duplex plate in various thicknesses and sizes, too, to fit different projects.
JFE Steel
Year Founded: 2002
Main Products
- Steel plates and sheets
- Stainless steel products
- Clad steel plates
- High-tensile strength steel plates
- Corrosion-resistant steel plates
- Abrasion-resistant steel plates
- Structural steel products
Company Description
JFE Steel Corporation, with its main offices located in Tokyo, Japan, got its start back in 2002. It happened when two big Japanese steel companies, Kawasaki Steel Corporation and NKK (which stood for Nihon Kokan), decided to merge. The name JFE actually stands for Japan, Fe (that’s the symbol for iron, you know), and Engineering.
Putting those two companies together made JFE Steel the second-biggest steel producer operating in Japan. Only Nippon Steel makes more.
JFE Steel itself is part of a larger group called JFE Holdings. JFE Holdings is listed on the Tokyo Stock Exchange, so people can buy shares in it. Besides JFE Steel, the holding company also includes JFE Engineering and JFE Shoji, managing different business areas.
Globally, JFE Steel is definitely a major steel manufacturer, making a huge amount of steel. The company has three primary production hubs within Japan. There’s the East Japan Works, the West Japan Works, and also the Chita Works, which has its own specialty.
The East Japan Works is pretty massive, spread over about 15 million square meters in the Chiba and Keihin districts; it churns out roughly 8 million tons of raw steel every year. Then you have the West Japan Works, combining plants in Fukuyama and Kurashiki. The Fukuyama plant opened in 1965, and Kurashiki started a bit earlier in 1961.
Both those West Japan plants sit conveniently along Japan’s Inland Sea. That location makes shipping materials and finished products much easier. The Chita Works, the third main site, concentrates specifically on making steel pipes and tubes.
Now, about special kinds of steel, JFE Steel has developed some serious capabilities with duplex stainless steel plates. What makes duplex steel special? Well, it combines high strength with really good resistance to corrosion, which is great for demanding situations.
This unique performance comes from its internal structure – it’s actually a mix of two different microscopic crystal types, called austenite and ferrite. JFE Steel uses advanced manufacturing processes and top-notch technology to make these duplex plates consistently. They have methods to precisely control the steel’s internal structure and the mix of elements in it.
Using low-carbon alloy recipes and the right kind of heat treatments helps produce stainless steel plates, including duplex types, that are high-quality and very reliable. You can count on them.
JFE Steel makes sure its duplex plate products meet different international standards, like the Japanese JIS standards and the American ASTM standards. The company takes quality seriously, using strict tests and checks. This ensures the duplex plates they deliver meet the toughest specifications their customers might have. These plates are often chosen when something needs to be both strong and able to fight off rust effectively.
NSS Nippon Steel & Sumitomo Metal
Year Founded: 2012 (via merger)
Main Products
- Stainless steel plates and sheets
- Duplex stainless steel (including NSSC2120)
- Steel pipes and tubes
- Clad steel plates
- High-strength steel plate for shipbuilding
- Corrosion-resistant steel products
- Seamless pipes for the energy industry
Company Description
Nippon Steel Corporation, headquartered in Marunouchi, Chiyoda, Tokyo, resulted from the 2012 merger of Nippon Steel Corporation and Sumitomo Metal Industries. The company actually changed its name officially to Nippon Steel Corporation back in April 2019. Still, it’s Japan’s biggest steelmaker and number four in the whole world for making steel.
The company’s history didn’t just start in 2012, though. Its roots go way back, all the way to 1901 when steel work first began at a place called Yawata Steel Works.
Making duplex stainless steel plates has become something the company is known for. They’ve done a lot of new things in this area. There’s a part of the company called NSSC – that’s Nippon Steel & Sumikin Stainless Steel Corporation. NSSC developed its own special types of duplex stainless steel.
These steel grades offer some real advantages. They’re quite different from the usual stainless steel options people had before.
Take NSSC2120, for example. That’s one of NSSC’s main duplex stainless steel products. It’s what they call a lean duplex steel. What that means is it has about 21% chromium but only 2% nickel, plus they add nitrogen. Because it uses less nickel, which can be expensive, the cost doesn’t jump around as much as older stainless steels.
One really neat thing about this duplex plate is how well you can weld it. Usually, with older duplex steels, you had to be careful with the heat when welding, which could slow things down. NSSC figured out how to fix that.
They did it by changing the mix of chemicals in the steel and improving how they make it. Now, their duplex plates can handle welding with more heat. That makes welding faster and cheaper for companies using it.
The strength of this duplex plate is also pretty good. NSSC2120 is about twice as strong as the regular Type 304 stainless steel that many people use. Because it’s stronger, designers can build things using thinner plates. This can save up to half the material sometimes.
Even though less material is used, the steel still fights off corrosion very well. It resists pitting corrosion from seawater and damage from acids just as well, or even better, than the older types of stainless steel.
Outokumpu
Year Founded: 1914
Main Products
- Stainless steel (flat products including cold rolled coil, strip and sheet, hot rolled coil, strip and plate)
- Quarto plate (including duplex stainless steel plate)
- Precision strip
- Specialized components
- Metal powder
- Ferrochrome
Company Description
Outokumpu, based in Finland, started because someone found a lot of copper ore in eastern Finland back in 1910. The company’s name, Outokumpu, actually means “strange hill” in Finnish—that’s a nod to the weird mound where they found the copper. The company officially got going in 1914 as Outokumpu Kopparverk; the Finnish state and some private people owned it together initially.
But Outokumpu didn’t stay just a copper company. It changed over time, becoming a global stainless steel maker by growing and buying other businesses.
A big change happened in 1959. They found chromium ore way up north in Kemi, Finland. Chromium is the key ingredient that makes steel stainless, you see. Finding it really helped Outokumpu move into making stainless steel. By 1976, the company was melting its first steel down in Tornio, Finland.
Then, around the year 2000, Outokumpu decided stainless steel was going to be its main thing. A year later, in 2001, they joined up with Avesta Sheffield, a company already known for stainless steel. They put their stainless steel work together under the name AvestaPolarit. This move was super important for Outokumpu, being able to make a duplex plate.
Getting Avesta Sheffield meant Outokumpu got real expertise in duplex stainless steel. Duplex steel itself was invented in Sweden way back in 1930. Because of the deal, Outokumpu learned more technically and got the factories needed for this special material. Avesta had already created some special stainless steel types, like certain high-alloy ones that were good for forming, welding, and resisting corrosion.
Outokumpu makes its quarto plate, which is a thick plate, in Degerfors, Sweden. This place focuses on heavy stainless steel plates, including those duplex kind. Degerfors has a long history of working with metal, going all the way back to the 17th century.
Nearby Degerfors is the Plate Service Center (PSC Nordic). This place offers more processing for the plates—think plasma cutting, water jet cutting, and bending metal. It adds extra value.
The company sells its duplex stainless steel under the brand “Forta“. This brand includes duplex and other stainless steels that are extra strong. Duplex stainless steel is liked because it’s strong and it resists rust really well. Inside, it’s made of roughly equal amounts of two different structures, austenite and ferrite.
Where is the duplex plate used? Mostly in tough spots where normal stainless steel might fail. Places like oil and gas rigs, chemical processing gear, pressure tanks, big storage containers, and stuff used near the ocean often use it. Its mix of strength and great rust resistance makes it perfect for places where certain kinds of corrosion, like chloride stress corrosion, are a problem.
POSCO
Year Founded: 1968
Main Products
- Hot rolled steel
- Cold rolled steel
- Stainless steel products (including duplex stainless steel plate)
- Steel plates
- Wire rods
- Electrical sheets
Company Description
POSCO, headquartered in Pohang, South Korea, got its start back on April 1, 1968. It was first called Pohang Iron and Steel Company. The company was created as part of a South Korean government plan, really, an effort to build up the country’s own steel industry to help the economy grow.
Even though it began without much money or experience, POSCO didn’t take long to become a major player in steel around the world. It grew quite fast.
The whole thing was led by Park Tae-joon; he was president of Korea Tungsten Co. at the time. It began as a team effort between the government and Korea Tungsten. Production actually started rolling in 1972, only four years after they opened, and they started selling steel plates that same year.
POSCO’s main base is in Pohang. That city used to be just a small fishing port, but the company turned it into a big industrial area. Later on, POSCO got bigger by building the Gwangyang Works, which they started in 1985 and finished in 1992.
Okay, let’s talk duplex stainless steel plate. POSCO is a pretty significant player in this specific market. Duplex stainless steel mixes properties from two kinds of stainless steel—austenitic and ferritic. What you get is metal that’s strong and fights off corrosion very well.
This mix makes it super valuable for tough uses. Think industries like petrochemicals, anything marine, and oil and gas operations. POSCO has a complete system for making stainless steel, covering everything from the initial steel making to hot rolling and cold rolling processes. Their duplex plate production includes different types, like grades 2205 and 2507.
Grade 2205 has about 22% chromium, 3% molybdenum, and maybe 5-6% nickel. It resists corrosion better than common stainless steels, like grade 316L, you might hear about. Then there’s the 2507 super duplex grade; that one’s got even more good elements – 25% chromium, 4% molybdenum, 7% nickel. It means even more strength and corrosion-fighting power for really demanding situations.
The duplex plate POSCO goes through a lot of checks. They want to make sure the quality and how it performs are always consistent. The company uses modern tech and computer systems throughout the making process, you know, from casting the metal continuously to rolling, cooling, and the final look-over.
Because it’s got these great features, POSCO’s duplex stainless steel plate shows up in lots of different industries. It’s used a lot near the ocean because it resists corrosion from chloride—saltwater basically. Perfect for offshore platforms, pipes carrying seawater, and structures built in marine environments.
Chemical processing plants use it for tanks, heat exchangers, and piping that have to handle corrosive liquids. The oil and gas world needs it for parts in exploration and production, where things need to be strong and not rust out.
This duplex plate is particularly good at resisting stress corrosion cracking, pitting, and crevice corrosion, especially when chloride is present. That’s why it often beats regular stainless steels in tough spots. It’s also reasonably easy to weld and shape, which makes it flexible for different kinds of construction and manufacturing projects.
SBS Steel
Year Founded: 1995
Main Products
- Steel belt systems for continuous industrial processes
- Flaking and pastillating units for petrochemical and oil & gas industries
- Endless steel belt systems for chemical and rubber industries
- Continuous cooling/freezing conveyors with steel belts for the food industry
- Turn-key production lines for sulphur & bentonite materials
Company Description
SBS Steel Belt Systems, located with headquarters in Venegono Inferiore, Italy, and offices in Milan, is an engineering and production company. They got started back in 1995. The company makes steel belt systems for industrial work that need to run constantly without stopping. Getting reliable systems out to customers everywhere is their main focus.
The company puts a lot into research and development. They look into special ways to use steel. SBS has spent quite a bit developing better steel belt technologies that work well even in difficult factory environments. Their knowledge about metals and machines helps them make custom systems for lots of different industries.
A duplex stainless steel plate is pretty important for many of the industrial systems SBS builds. It’s used because it’s very strong and resists corrosion well. This kind of plate has a lot of chromium, maybe 18% to 28%, and certain amounts of nickel, like 1.5% to 8%. That mix makes a balanced metal structure that has both ferrite and austenite parts.
The engineers know how to pick the right type of duplex plate for different jobs. They often use standard types, like 2304 and 2205, for regular uses. But for tougher situations, especially around petrochemicals, they might use super duplex grades. These are even better at fighting off specific kinds of corrosion, like pitting or problems in tight spaces.
Using a duplex plate in the belt systems helps customers, especially those working where corrosion is a problem. These duplex plates are about twice as strong as regular austenitic stainless steel. Because they’re stronger, the belts can sometimes be made thinner and lighter without causing problems. This can help save money, but still keeps everything strong enough for tough jobs.
ThyssenKrupp
Year Founded:1999
Main Products
- Stainless steel (including duplex stainless steel plate)
- Carbon steel products
- Industrial machinery and components
- Elevator systems
- Automotive components
- Marine systems (including submarines and naval vessels)
- Engineering services
Company Description
ThyssenKrupp AG, with operational headquarters in Duisburg and Essen, Germany, operates as a major industrial engineering and steel company. It was created when two older German companies, Thyssen AG (started in 1891) and Krupp (started in 1811), merged on March 17, 1999. Both of the original firms were really foundational to Germany’s industrial power back in the day.
The roots go back to August Thyssen and Friedrich Krupp. Krupp, especially, was involved heavily in developing stainless steel; actually, two engineers there, Benno Strauss and Eduard Maurer, patented a key type called austenitic stainless steel way back on October 17, 1912. Their work in the Essen lab pretty much set the stage for the stainless steel we use constantly now.
The company’s main steel operations are centered at the Duisburg plant, first set up in 1891. Being right on the Rhine River has always been a big help for moving materials and products. ThyssenKrupp also runs processing facilities using up-to-date equipment in other places like Bochum, Dortmund, and the Siegerland region.
Developing duplex stainless steel is another significant part of their story. Though early versions existed around the 1930s, it was Krupp that came up with the modern, widely used Duplex 2205 grade in the mid-1970s. Duplex steels are interesting because they mix properties from two different families of steel, ferritic and austenitic.
Duplex 2205 is still the go-to grade around the world; people call it the “workhorse” duplex steel. The name “2205” gives you a hint about what’s in it: around 22% chromium and 5% nickel. It also has about 3% molybdenum and some nitrogen mixed in, which boosts its performance significantly.
Because of that special recipe, Duplex 2205 is great at resisting several kinds of corrosion – things like pitting, problems in tight gaps (crevice corrosion), and cracking under stress. It holds up well in tough environments. ThyssenKrupp makes this duplex steel into plates of different thicknesses and dimensions to fit what various industries need.
A big plus is its strength; the yield strength is nearly double that of common austenitic stainless steels. This strength means you can sometimes use less material, making it an economical pick when you need something strong that also fights off corrosion really well.
Conclusion
Finding the right source for a duplex plate involves looking at experienced manufacturers known for quality. These suppliers offer materials suited for challenging jobs in various sectors. If you’re in the market for anything made from stainless steel, check out Jianglin Steel because they have everything you need.
