1.4410 Duplex Stainless Steel Pipes For Waste Water Treatment

1.4410 (also known as Super Duplex 2507, UNS S32750) stainless steel pipes possess excellent strength and high resistance to pitting and crevice corrosion, maintaining good performance even in highly corrosive, chlorine-containing, or seawater environments. Therefore, they are ideally suited for use in wastewater treatment applications.

The pitting resistance equivalent number (PREN) of 1.4410 duplex stainless steel pipes is 30-35, exhibiting excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in harsh wastewater environments with chloride concentrations up to 10,000 mg/L.

1.4410 cold-rolled stainless steel pipes have a minimum tensile strength of 620 MPa and a yield strength of 450 MPa, enabling them to withstand cyclic pressure and corrosive media in municipal wastewater treatment systems, industrial wastewater (chemical, dyeing) pipelines, and aeration systems for over 15 years while maintaining structural integrity and requiring low maintenance costs.

1.4410 Duplex Stainless Steel Pipes Specification:

Specification	ASTM A790, ASME SA790
Dimensions	ASME B36.10M, ASME B36.19M
Sizes	1/2" - 48 "
Schedule	SCH10 - SCHXXS
Types	Seamless / ERW / Welded
Shapes	Round
End Abbreviations	Plain / Beveled End, Treaded

 

1.4410 Equivalent Material:

Alloy	UNS Designation	Werkstoff NR.	AFNOR	Grade	DIN	EN	SS
2507	S32750	1.4410	Z3 CN 25.06 Az	F53	X 2 Cr Ni MoN 25.7.4	1.4410	2328

 

Chemical Composition:

Carbon	0.030
Manganese	1.20
Phosphorous	0.035
Sulphur	0.020
Silicon	0.80
Chromium	24.0–26.0
Nickel	6.0–8.0
Molybdenum	3.0–5.0
Nitrogen	0.24–0.32
Iron	Bal.
Copper	0.50

 

Mechanical Properties:

Tensile, min, ksi[MPa]	Yield, min, ksi[MPa]	Elongation, %(min)	Hardness, HB(max)
116 [800]	80 [550]	15	300

 

What is the difference between 1.4410 and 1.4462?

Standard duplex 2205 (1.4462) contains about 22 % chromium, 5 % nickel and 3 % molybdenum. In contrast, 1.4410 contains roughly 25 % Cr, 7 % Ni, 4 % Mo and ≈0.27 % N. These higher alloy additions increase the PREN and raise both yield strength and tensile strength.

 

Applications of Super Duplex 2507 S32750 Pipe

- Offshore platforms: Due to its high corrosion resistance and excellent durability, Duplex 2507 pipe is commonly used in offshore oil and gas platforms.

- Chemical processing: This type of pipe is ideal for use in chemical processing facilities, where it must withstand exposure to highly aggressive chemicals.

- Pulp and paper mills: The excellent erosion and abrasion resistance of super duplex 2507 pipe make it an ideal choice for use in pulp and paper mills, where it can transport slurries and abrasive materials.

- Desalination plants: Given its exceptional corrosion resistance, super duplex 1.4410 material is an ideal choice for use in desalination plants, where seawater is converted into freshwater.

2507 Stainless Steel Pipe & Tube, UNS number is UNS S32750 or S32760, EN steel number is 1.4410, has similar properties to 2205 (S31803), both are super duplex stainless steels, suitable for oil and gas, chemical processing, marine engineering and other fields.

 

GNEE exports more than 2,000 tons of stainless steel materials every year, providing seamless pipes, welded pipes, round pipes, square pipes, rectangular pipes, etc. of various sizes, specifications, and shapes; hydrostatic testing, non-destructive testing, pitting and crevice corrosion testing, etc. Services, support processing and customization, welcome to visit the company and establish long-term cooperative relations!