S32750 vs S32760 Stainless Steel Pipes: Key Differences

What is S32750 material pipe?

S32750 material pipe (commonly known as Super Duplex 2507 or by W.Nr. 1.4410) is a high-alloy, corrosion-resistant steel with a 50/50 austenitic-ferritic microstructure. It is used in high-strength, severe-corrosion applications, particularly in seawater and chemical processing, with key uses in desalination plants, oil & gas systems, and chemical tankers.

 

What is S32760 material pipe?

S32760 stainless steel pipe is a high-alloy super duplex stainless steel (commonly known as F55, 1.4501, or Zeron 100) designed for extremely high corrosion resistance and mechanical strength. Its 50:50 ferritic-austenitic structure makes it excellent in seawater, chemical processing, and oil and gas applications, especially resistant to chloride-induced stress corrosion cracking and pitting (PREN > 40).

 

What is the fundamental difference between S32750 and S32760?

Both are Super Duplex steels with a PREN > 40. The main difference is the alloying elements: S32760 contains intentional additions of Copper (0.5-1.0%) and Tungsten (0.5-1.0%), whereas S32750 does not require these. These additions make S32760 more resistant to specific mineral acids and sour-gas environments.

 

S32750 vs S32760 Super Duplex Stainless Steel: Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N	Fe
S32750	0.030 max	1.20 max	0.80 max	0.035 max	0.020 max	24.00 – 26.00	3.00 – 5.00	6.00 – 8.00	0.24 – 0.32	58.095 min
S32760	0.05 max	1.00 max	1.00 max	0.030 max	0.010 max	24.00 – 26.00	3.00 – 4.00	6.00 – 8.00	0.20 – 0.30	57.61 min

 

S32750 vs S32760 Super Duplex Stainless Steel: Mechanical Properties

Grade	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
S32750 / S32760	7.8 g/cm3	1350 °C (2460 °F)	Psi – 116000, MPa – 800	Psi – 80000, MPa – 550	15 %

 

S32750 vs S32760 Stainless Steel: Corrosion Resistance

Both S32750 and S32760 are premium Super Duplex Stainless Steels (SDSS) offering exceptional corrosion resistance, but S32760 is generally considered superior in aggressive, highly acidic, or high-salinity environments (e.g., oil & gas, seawater) due to tungsten and copper additions, which enhance pitting and crevice corrosion resistance. Both feature a Pitting Resistance Equivalent Number (PREN) > 40.

 

S32750 vs S32760 Super Duplex Stainless Steel: Applications

 UNS S32750 and S32760 are high-performance super duplex stainless steels sharing high corrosion resistance and strength (PREN > 40). S32750 is ideal for general offshore oil & gas, chemical processing, and desalination. S32760, with added copper and tungsten, offers superior performance in highly acidic, subsea, and aggressive chloride environments.

 

S32750 vs S32760 Stainless Steel Pipes: Which one should you choose?

Choose S32750 for standard high-chloride environments, seawater desalination, and most offshore applications where a high-strength, high-PREN material is required. It is easier to source.
Choose S32760 if your application involves sour gas (H2S), sulfuric/hydrochloric acid exposure, or if the end-user specification (common in UK/European offshore projects) specifically mandates Zeron 100.

If you have any questions about the comparison between UNS S32750 and UNS S32760, please contact us!Email: sales@gneestainless.com

 

 

If you have project requirements for UNS S32750 and UNS S32760 steel pipes, please feel free to place an order. GNEE maintains a large inventory of commonly used products for your selection. These steels can be processed into various practical product forms, including seamless and welded pipes. For detailed information on chemical composition and to request free samples, please contact our factory immediately. We offer highly competitive prices and excellent service.

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Manufacturing & Delivery Condition

Feature	Specification
Heat Treatment	Solution Annealing: 1040°C - 1150°C, followed by water quenching.
Surface Finish	Pickled & Annealed (White surface) / Bright Annealed (BA).
End Finish	Plain Ends (PE) / Beveled Ends (BE) / Threaded Ends.

 

S32750 / S32760 Stainless Steel Pipes Specifications

Item	S32750	S32760
Common Name	Super Duplex 2507	Zeron 100
UNS Designation	S32750	S32760
Standard Specifications	ASTM A790, A789, A928	ASTM A790, A789, A928
Pipe Type	Seamless (SMLS) / Welded (WLD)	Seamless (SMLS) / Welded (WLD)
PREN Value	≥ 41	≥ 40
Nominal Pipe Size (NPS)	1/2" to 24"	2" to 48"
Outside Diameter (OD)	21.3 mm to 610 mm	60.3 mm to 1219 mm
Wall Thickness (WT)	Sch 10S, 40S, 80S, 160, XXS	Sch 5S, 10S, 40S, 80S
Length	Single Random (5–7 m) / Double Random Length (DRL)	Fixed length up to 12 meters