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What is Duplex Stainless Steel?
Duplex stainless steel is a special type of stainless steel that contains both austenitic and ferritic phases.
This combination of phases gives duplex stainless steel its unique physical and chemical properties.
Features of Duplex Stainless Steel
Duplex stainless steel possesses various characteristics.
Here we introduce the features of duplex stainless steel.
① High Strength
Its high strength allows for thinner designs, reducing weight and contributing to cost savings through reduced material usage.
It also boasts superior wear resistance.
② High Corrosion Resistance
By selecting the appropriate material steel type considering the use environment and application,
it is possible to achieve both strength and corrosion resistance.
③ Low Thermal Expansion
Improved thermal fatigue characteristics allow for reduced thermal distortion.
④ Excellent Polishability
Duplex stainless steel can be polished in a variety of ways suitable for different applications.
It is capable of achieving high aesthetic polishability for exterior parts and functional polishing for internal components.
For example, it exhibits very good polishability with popular buff polishing.
⑤ Resource-saving Stainless Steel
It is an environmentally friendly stainless steel with a low content of rare metals, hence stable pricing and reduced environmental impact.
It is, of course, recyclable and sustainable metal material.
Duplex stainless steel is a sustainable metal.
Machinability of Duplex Stainless Steel
Duplex stainless steel can be laser cut.
Due to the material’s high strength, mechanical shearing processes require double the cutting capacity, making laser cutting the optimal choice. Waterjet and plasma cutting are also possible.
Duplex stainless steel is enhanced with anti-fingerprint and anti-glare properties, as well as wear resistance.
The processing steps involve grinding and polishing each duplex stainless steel layer, then finishing with a buff mirror gloss to enhance cleanliness.
SUS329J1 focuses on wear resistance (MAKO-IITK2HUB),
SUS821L1 emphasizes anti-glare and tactile properties (MAKO-IITK16UB),
with suitable polishing processes applied accordingly.
Finally, MaCoatGC coating is applied to improve scratch resistance and anti-fingerprint properties.
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Aesthetic and Performance Achievements of Duplex Stainless Steel
Duplex Stainless Steel SUS821L1
SUS821L1 features higher strength and equivalent or better corrosion resistance compared to SUS304 steel.
Specifically, it boasts approximately twice the 0.2% proof strength.
This means that for louvers and stainless fixtures manufactured from SUS304,
utilizing the high strength characteristics of duplex stainless steel allows for thinner material usage, thereby achieving weight reduction and cost savings.
It can significantly contribute to applications like architectural louvers requiring strength,
when thicker stainless steel is used.
More details can be found here
https://www.mako-metal.com/case/2120lubare
Duplex Stainless Steel SUS329J1
SUS329J1 is characterized by its high strength and equivalent or greater corrosion resistance compared to SUS316L steel.
It boasts more than twice the 0.2% proof strength.
For stainless fabrications manufactured from SUS316L, required in corrosive environments like saline areas or near seawater,
the excellent corrosion resistance and high strength of duplex stainless steel allow for thinner material usage, leading to weight reduction and cost savings.
It can greatly contribute to applications requiring both strength and corrosion resistance in stainless steel.
More details can be found here
https://www.mako-metal.com/case/mirikaroden_panel
Summary
There are various grades of stainless steel suitable for different applications.
Among them, duplex stainless steel offers excellent performance, combining strength with aesthetics.
Proper selection of steel grades can lead to weight reduction and cost savings.
Moreover, aesthetic and functional polishing can further enhance the added value.
We offer sales of architectural metal materials, architectural metal products, sample provision, and metal coating solutions.
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*Our sales subsidiary handles the sales.
TOYO-FMDS offers the following metal processing services:
- Test materials, small pieces, small plates – Provision service
- Cutting services for titanium, stainless steel, and aluminum
- Glass coating services
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