Check Advantages & Disadvantages Duplex Steel
Difference Between Duplex and Super Duplex Stainless Steel
DSS and super duplex grades are designed with a dual structure austenitic and ferritic grade. These steel products are nearly identical and can be distinguished by certain characteristics.
Top 10 advantages of Duplex Steel
Top 10 benefits to using of Super Duplex Steel
A SDSS grade is designed with a dual microstructure and has superior performance in different applications. Some of the benefits of this grade are:
Disadvantages of DSS and SDSS
The dual microstructure grade has its set of disadvantages alongside its advantages. The major disadvantage of this component is that it has lower heat resistance in comparison to other austenitic stainless steel products. These steel grades are limited to work in temperatures between -50 to 300 degrees C, as there are chances that deleterious intermetallic phases are formed.
DSS And Super Duplex Stainless Steel Applications
The DSS and SDSS are versatile grades that are commonly seen in:
Why DSS material for marine segmentation?
Duplex material grades are designed with an excellent chemical composition which allows them to have good corrosion resistance coupled with enhanced tolerance to pitting that is seen in marine environments. The good durability and safety of this steel propels them to be a good choice for marine segmentation.
DSS in desalination plants
Desalination is a common method today to processes toxic affluents and corrosive media. The entire desalination process is very expensive and requires special expertise. The process requires a steel grade that has good strength coupled with higher corrosion resistance properties and is available at affordable rates. All these features match the DSS grade, which also showcases good reliability and offers a long service life.
Check the price comparison and list of Grades of Duplex Stainless Steel material
Differnce Between Chemical Composition of DSS and SDSS Material
|S31803||4.50 – 6.50||2.00 max||1.00 max||0.030 max||0.020 max||22.0 – 23.0||3.0 – 3.5||0.14 – 0.20||0.030 max||63.72 min|
|S32205||4.50 – 6.50||2.00 max||1.00 max||0.030 max||0.020 max||21.0 – 23.0||2.50 – 3.50||0.8 – 0.20||0.030 max||63.54 min|
|S32750||6.00 – 8.00||1.20 max||0.80 max||0.030 max||0.020 max||24.00 – 26.00||3.00 – 5.00||0.24 – 0.32||0.035 max||58.095 min|
|S32760||6.00 – 8.00||1.00 max||1.00 max||0.05 max||0.010 max||24.00 – 26.00||3.00 – 4.00||0.20 – 0.30||0.030 max||57.61 min|
Difference Between Mechanical Properties Of DSS And SDSS Material
|2205||UNS S31803, UNS S32205|
|2507||UNS S32750 , UNS S32760, UNS S32550 , UNS S39274|
|Zeron 100||UNS S32760|
|Ferralium 255||UNS S32550|
|Lean||LDX 2101, LDX 2304, LDX 2404|
DSS and SDSS Grades
|Grades||Melting Point (°C)||Density (g/cm 3)||Density (lb/in 3)||Melting Point (°F)|
|S31803 / S32205||1420 – 1465||7.805||0.285||2588 – 2669|
|S32750 / S32760||1350||7.8||0.281||2460|
Price Difference Between DSS and SDSS
|Price Difference||Price Per Kg in India||Price in USD (per kg)|
|DSS Plate price per kg||INR 300-350 / Kg||USD $ 4-5|
|SDSS Plate price per kg||INR 550-700 / Kg||USD $ 7-11|