what is EN 10216-5 1.4462 Stainless Steel Seamless Pipe？

Our EN 10216-5 1.4462 seamless pipes comply with European standards and have become the preferred material in the European energy, chemical, and marine engineering sectors. Their manufacturing and testing strictly adhere to the EN/ISO standard system, ensuring reliability under high pressure, corrosive conditions, and extreme temperatures. They are a benchmark product that meets the EU's industrial sustainability goals.

 

GNEE supplies 1.4462 duplex stainless steel seamless pipes (also known as Duplex 2205), a high-performance material with a dual-phase microstructure of austenite and ferrite. Its manufacturing and testing strictly comply with the EN/ISO standard system, ensuring reliability under high pressure, corrosive environments, and extreme temperatures.

Furthermore, 1.4462 duplex stainless steel cold-rolled pipes exhibit excellent resistance to chloride stress corrosion cracking (SCC) and pitting corrosion (PREN≥35), with a tensile strength of 750–850 MPa and a yield strength exceeding 450 MPa, outperforming traditional austenitic stainless steels. It is suitable for harsh environments, such as oil and gas transportation (resistant to H₂S/CO₂ corrosion), high-pressure seawater desalination pipelines, and chemical reactors.

 

EN 10216-5 Stainless Steel Tube Specifications

Standard	EN 10216-5
Tube Type	Seamless Tube
Steel No.	1.4301, 1.4307, 1.4401, 1.4404, 1.4541, 1.4571, 1.4462
ASTM Grades	304/304L, 316/316L, 321, 316Ti, 2205
Finishing	Annealing Pickling Bright Annealing Polished
Outside Diameter	6 Up To 711 Mm
Thickness	0.8 Up To 30 Mm
Testing	TC 1 and TC2

 

Tolerances on outside diameter D and wall thickness T for tubes ordered hot-finished

Outside Diameter D	Tolerances On D		Tolerances On T
Mm	Tolerance Class	Permissible Deviation	Tolerance Class	Permissible Deviation
30 £ D £ 219,1	D 2	± 1,0 % Or ± 0,5 Mm Whichever Is The Greater	T 1	± 15 % Or ± 0,6 Mm Whichever Is The Greater B
			T 2	± 12,5 % Or ± 0,4 Mm Whichever Is The Greater
219,1 < D £ 610	D 1	±1,5 % Or ± 0,75 Mm Whichever Is The Greater A		+ 22,5 % – 15 % C
			T 1	± 15% Or ± 0,6 Mm Whichever Is The Greater D
			T 2	± 12,5% Or ± 0,4 Mm Whichever Is The Greater E

 

Tolerances on outside diameter D and wall thickness T for tubes ordered cold-finished

Tolerances on D £ 219,1 mm		Tolerances on T
Tolerance class	Permissible deviation	Tolerance class	Permissible deviation
D 3	± 0,75 % or ± 0,3 mm whichever is the greater	T 3	± 10 % or ± 0,2 mm whichever is the greater
D 4 a	± 0,5 % or ± 0,1 mm whichever is the greater	T 4 a	± 7,5 % or ± 0,15 mm whichever is the greater

 

What material is 1.4462 equivalent to?

This grade is written as 1.4462 or X2CrNiMoN22-5-3 according to EN norm and it is written as UNS S31803 or S32205 according to UNS norm. Some producers can also name this 1.4462 material as Temet, Aquashaft, Marinox but the actually, all this names are equal to 1.4462 duplex stainless steel.

 

Application

1. Marine and oil and gas engineering (European core applications)

2. Chemical and pharmaceutical (REACH/ROHS compliance)

3. Energy and low-carbon transformation

4. Rail transit and ships

 

 

We offer EN 10216-5 seamless stainless steel tubes in various sizes, including grades 1.4307, 1.4401, 1.4404, 1.4571, 1.4541, and 1.4462. EN 10216-5 seamless tubes can be manufactured using hot or cold finishing processes, and can be heat treated for descaling and bright annealing. The internal and external surface finish of the tubes should conform to the typical requirements of the manufacturing process.

The diameter and wall thickness of the tubes should conform to the relevant tolerances specified in EN ISO 1127. Outside diameters are D1, D2, D4, and D4, and wall thicknesses are T1, T2, T3, and T4. EN 10216-5 seamless tubes can be manufactured to tighter tolerances upon request. Our facility can meet TC1 and TC2 testing requirements.Email: sales@gneestainless.com