UNS S32760|1.4501|S32760 Seamless Super Duplex Steel Pipe

UNS S32760 (F55 / EN 1.4501) seamless super duplex stainless steel pipe for severe offshore, subsea, desalination, seawater and chemical process service. ASTM A790 / ASME SA790 supply is reviewed by grade, dimensions, heat treatment, testing and documentation.

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What Is UNS S32760 Seamless Pipe?

UNS S32760 Seamless Super Duplex Pipe Overview

UNS S32760 seamless pipe (F55 / EN 1.4501) is a super duplex stainless steel pipe designed for high mechanical strength and resistance to pitting, crevice corrosion and chloride-induced stress-corrosion cracking. Seamless construction is commonly selected where pressure integrity and uniform wall structure are important.

Product item	Technical information
Product	UNS S32760 seamless super duplex stainless steel pipe
Alternative designation	F55 / EN 1.4501
Primary standards	ASTM A790 / ASME SA790; project requirements subject to review
Key alloy feature	Chromium, molybdenum and nitrogen with tungsten and copper; PREN is commonly specified at 40 or above
Typical service	Severe offshore, subsea, desalination, seawater and chemical process systems
Supply basis	Grade, OD, wall thickness, length or schedule, heat treatment and inspection requirements

Chemical Composition of UNS S32760

Values below are an engineering reference. Contractual limits must follow the governing standard, edition and purchase order.

Grade	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu / W
S32760	≤0.03	≤1.00	≤0.030	≤0.010	≤1.00	6.00–8.00	24.00–26.00	3.00–4.00	0.20–0.30	0.50–1.00 Cu; 0.50–1.00 W

Mechanical Property Reference

	Tensile strength	Yield strength	Elongation	Hardness
Reference value	≥750 MPa	≥550 MPa	≥25%	≤270 HBW
Procurement note	Indicative product data; verify acceptance values against the applicable standard and MTC.	Confirm the required product condition and wall thickness.	Test requirements depend on the governing specification.	Use the ordered standard and project limits.

Manufacturing, Testing and Documentation

Item	Available scope
Manufacturing route	Hot piercing or extrusion, cold drawing/pilgering where required, solution annealing, straightening and finishing
Dimensional control	OD, wall thickness, length, straightness and surface inspection against the purchase specification
Integrity testing	Hydrostatic or nondestructive electric testing; UT or eddy-current testing when specified and applicable
Documents	Material Test Certificate, chemical and mechanical results, dimensional report and additional inspection records as ordered
Optional verification	PMI, corrosion testing and third-party inspection subject to technical and contractual review

Typical Applications

Industry	Typical equipment or service	Selection focus
Deepwater oil and gas	Subsea manifolds, risers and flowlines	High strength and localized-corrosion resistance
Desalination	RO piping and brine systems	Resistance in concentrated chlorides
Chemical processing	Acid and aggressive process piping	Tungsten- and copper-alloyed chemistry
Marine systems	Seawater cooling and fire-main piping	Resistance to saline and erosive service

Super Duplex Grade Comparison

Grade	Key distinction	Typical selection focus
S32550	Copper-bearing Ferralium 255	Acidic chemical and seawater duties
S32750	Widely specified Alloy 2507 / F53	Offshore, desalination and chloride service
S32760	Tungsten- and copper-alloyed F55	Severe offshore and erosive service
S32950	Higher chromium, leaner molybdenum range	Selected industrial chloride environments

Information Required for a Quotation

Requirement	Information to specify
Material	UNS S32760 and governing standard
Dimensions	OD × wall thickness × length or NPS × schedule
Quantity	Number of pieces or total weight
Condition	Heat treatment, surface finish, ends and packing
Inspection	MTC, NDT, PMI, corrosion testing or third-party inspection
Logistics	Destination and required delivery date

Frequently Asked Questions

What is UNS S32760 seamless pipe?

UNS S32760, also known as F55 or EN 1.4501, is a tungsten- and copper-alloyed super duplex stainless steel used in severe chloride, offshore and chemical process environments.

Which standard is commonly specified?

ASTM A790 / ASME SA790 is commonly used for seamless and welded ferritic-austenitic stainless steel pipe. State the exact edition, dimensions and supplementary requirements in the purchase order.

What information is needed for quotation?

Send the grade, standard, OD, wall thickness, length, quantity, delivery condition, inspection requirements and destination for technical review.

See the complete Super Duplex Stainless Steel Seamless Pipe range. Final availability, testing scope and compliance are subject to formal review of the standard, drawing and purchase order.

Ready to Request a Quotation?

Send your UNS S32760 Seamless Pipe enquiry with grade, applicable ASTM/ASME standard and edition, OD × wall thickness, length, quantity, end finish, delivery destination and inspection documents — you will get a written quotation stating the specification and edition, delivery condition, documents included and lead time.

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