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Duplex Stainless Steel Product List and Ranking from 6 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Aug 20, 2025～Sep 16, 2025
This ranking is based on the number of page views on our site.

Duplex Stainless Steel Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Aug 20, 2025～Sep 16, 2025
This ranking is based on the number of page views on our site.

  1. 杉山金属 Osaka//Ferrous/Non-ferrous metals
  2. 日本製鋼所M&E Tokyo//Machine elements and parts 営業本部
  3. 株式会社アロイ Tokyo//Ferrous/Non-ferrous metals 営業本部　東京営業所
  4. 4 ニッコー Chiba//Machine elements and parts
  5. 4 アレイマジャパン Hyogo//Ferrous/Non-ferrous metals チューブカンパニー
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Duplex Stainless Steel Product ranking

Last Updated： Aggregation Period:Aug 20, 2025～Sep 16, 2025
This ranking is based on the number of page views on our site.

  1. High-strength, high-corrosion-resistant lean duplex stainless steel "SUS821L1" 杉山金属
  2. Duplex Stainless Steel 日本製鋼所M&E 営業本部
  3. Lean duplex stainless steel ニッコー
  4. 4 Duplex stainless steel (stainless steel alternative material) 【Ideal for water supply and drainage】 株式会社アロイ 営業本部　東京営業所
  5. 4 Duplex stainless steel (alternative stainless steel grade) 【Ideal for water treatment equipment】 株式会社アロイ 営業本部　東京営業所

Duplex Stainless Steel Product List

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Duplex stainless steel (stainless steel alternative material) 【Ideal for water supply and drainage】

Duplex stainless steel (stainless steel alternative material) 【Ideal for water supply and drainage】

[New Stainless Steel Material] An alternative steel type to stainless steel. "Duplex stainless steel" with double the strength and excellent corrosion resistance.

Duplex stainless steel offers excellent strength and corrosion resistance, and it is a stable material in terms of cost. It is a new material that is currently attracting attention, particularly in the fields of water supply and drainage, and water treatment facilities, as an alternative to conventional stainless steels (SUS304, SUS316L). 【Features】 ● Ideal for seismic reinforcement ● Achieves lightweight components and cost reduction ● Equivalent corrosion resistance to SUS304 and SUS316L with "NSSC2120" and "S32304" 【Applications/Track Record】 ■ Lean duplex steel screens (gratings) adopted for stormwater outlets in sewage systems ■ Utilization of strength and corrosion resistance - Adoption as seismic reinforcement materials - Use in locations requiring high corrosion resistance - Cost reduction through lightweight design Alloy, as a pioneer in the stainless steel processing field, responds to all your needs from material supply to processing and technical support. Please feel free to consult us.

  • alloy

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High-strength, high-corrosion-resistant lean duplex stainless steel "SUS821L1"

High-strength, high-corrosion-resistant lean duplex stainless steel "SUS821L1"

We obtained JIS certification on September 24. Lightweight design is now possible due to high strength!!! It is expected to have improved corrosion resistance against chlorine and water.

This is a lean duplex stainless steel developed by Nippon Steel & Sumitomo Metal Corporation, leading the world in innovation. With a composition of 21% Cr and 2% Ni, it forms a fine microstructure that combines ferritic structure, represented by SUS430, and austenitic structure, represented by SUS304, resulting in a strength that is 2.5 times that of ordinary steel and about twice that of SUS304. This allows for significant weight reduction. Furthermore, it has excellent corrosion resistance and is less prone to stress corrosion cracking in chlorine environments after processing, demonstrating reliability in coastal conditions. Initially named NSSSC2120, it obtained JIS certification on September 24 last year and is now designated as SUS821L1. Currently, it is primarily used for solar power generation frames and mounting hardware, but an expansion of applications in various fields is expected in the future.

  • Food Processing Equipment
  • Food Cleaning Equipment
  • Powder Conveyor Device

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Contributing to the SDGs! Offering proposals and cost performance with a rich variety of products.

Contributing to the SDGs! Offering proposals and cost performance with a rich variety of products.

From lean duplex to super duplex, leave your duplex stainless steel needs to Yamato Special Steel!

Duplex stainless steel is a type of stainless steel that combines austenitic and ferritic structures. By leveraging its high strength and high corrosion resistance, it allows for value engineering (VE) from general-purpose stainless steel and other materials, increasing options. We have a rich inventory of duplex stainless steel, ranging from lean duplex to super duplex. 【Characteristics】 ■ High strength: Weight reduction ■ High corrosion resistance: Resistance to stress corrosion cracking and pitting corrosion ■ Low thermal expansion: Reduced maintenance burden and extended lifespan ■ Resource-saving: Reduction of rare metals With a low nickel content, it is less susceptible to fluctuations in material prices, contributing to sustainable consumption and production patterns, which aligns with the SDGs. *For more details, please refer to the PDF document or feel free to contact us.

  • Steel

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Duplex Stainless Steel

Duplex Stainless Steel

Introducing examples of duplex stainless steel products! We can manufacture from raw materials to finished products according to your needs.

We have a track record of supplying materials for paper manufacturing and bridge components that require corrosion resistance, and we are also capable of producing raw materials such as forged and rolled materials. We have a research facility in Muroran, where we can respond to various needs, including material development and proposals for optimal processes. For example, in ultra-thick duplex stainless steel, the cooling rate slows down, causing the σ phase to precipitate and reducing ductility and corrosion resistance. However, through our original component design, it is possible to suppress the σ phase. We also have various machining equipment, allowing us to deliver not only simple round bar and pipe shapes but also components and parts in the shapes required by our customers. *For more details, please refer to the PDF document or feel free to contact us.

  • 2019-10-03_17h32_06.png
  • stainless
  • Special Steel

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Lean duplex stainless steel

Lean duplex stainless steel

High-strength, high-corrosion-resistant, resource-saving lean duplex stainless steel is now in stock!

Compared to SUS304, the price is stable and lightweight design is possible. We have started selling stock for one size each of square pipes and angles.

  • stainless

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Duplex stainless steel (alternative stainless steel grade) 【Ideal for water treatment equipment】

Duplex stainless steel (alternative stainless steel grade) 【Ideal for water treatment equipment】

[New Stainless Steel Material] An alternative steel type to stainless steel. "Duplex Stainless Steel" with double the strength and excellent corrosion resistance.

Duplex stainless steel offers excellent strength and corrosion resistance, and it is a stable material in terms of cost. It is a new material that is currently gaining attention, particularly as an alternative to conventional stainless steels (SUS304, SUS316L) in the fields of water supply and sewage, as well as water treatment facilities. 【Features】 ● Ideal for seismic reinforcement ● Achieves lightweight components and cost reduction ● Equivalent corrosion resistance to SUS304 and SUS316L with "NSSC2120" and "S32304" 【Applications/Track Record】 ■ Lean duplex steel screens (gratings) adopted for stormwater outlets in sewage systems ■ Utilization of strength and corrosion resistance - Adoption as seismic reinforcement materials - Use in locations requiring high corrosion resistance - Cost reduction through lightweight design Alloy, as a pioneer in the stainless steel processing field, responds to all your needs from material supply to processing and technical support. Please feel free to consult with us.

  • alloy

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Duplex stainless steel "SAF series"

Duplex stainless steel "SAF series"

Obtained certification for pressure applications! Holding overseas stock in various shapes.

The "SAF Series" is a duplex stainless steel proposed from four types of steel that suit the customer's usage environment. "SAF2707HD" demonstrates particularly high performance in highly active, acidic, and chloride environments. Additionally, "SAF2304" can be used as a cost-effective alternative to ASTM316L and ASTM304. These products are sold worldwide for various applications including petroleum refining, petrochemicals, chemical processes, oil & gas, urea, and water pumping. 【Lineup】 ■SAF2707HD ■SAF2205 ■SAF2507 ■SAF2304 *For more details, please refer to the PDF document or feel free to contact us.

  • Special Steel

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Duplex stainless steel (stainless steel alternative alloy)

Duplex stainless steel (stainless steel alternative alloy)

[New Stainless Steel Material] An alternative steel type to stainless steel. "Duplex Stainless Steel" with double the strength and excellent corrosion resistance.

Duplex stainless steel is a material that excels in strength and corrosion resistance, and is also stable in terms of price. It is a new material that is currently attracting attention, particularly in the fields of water supply and drainage, and water treatment facilities, as an alternative to conventional stainless steels (SUS304, SUS316L). 【Features】 ● Ideal for seismic reinforcement ● Achieves lightweight components and cost reduction ● Equivalent corrosion resistance to SUS304 and SUS316L with "NSSC2120" and "S32304" 【Applications/Track Record】 ■ Lean duplex steel screens (gratings) adopted for stormwater outlets in sewage systems ■ Utilized for its strength and corrosion resistance, including: - Adoption as seismic reinforcement materials - Use in areas requiring high corrosion resistance - Cost reduction through lightweight design Alloy, as a pioneer in the stainless steel processing field, responds to all your needs from material supply to processing and technical support. Please feel free to consult with us.

  • alloy

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