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ASTM A790 UNS S37500 Super Duplex Stainless Steel Seamless Pipe

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ASTM A790 UNS S37500 Super Duplex Stainless Steel Seamless Pipe

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Brand Name :	YUHONG
Model Number :	ASTM A790 UNS S3750
Certification :	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Price :	Negotiable
Payment Terms :	L/C,T/T
Supply Ability :	According to customer's request
Delivery Time :	Depends on quantity

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ASTM A790 UNS S37500 Super Duplex Stainless Steel Seamless Pipe

ASTM A790 UNS S3750 Super Duplex Seamless Pipe | Chemical & Mechanical Properties | Global Supplier

Product Overview

Our ASTM A790 UNS S3750 (UNS S37500) seamless pipes deliver exceptional pitting/stress corrosion resistance in chloride-rich environments. Manufactured through rotary piercing and cold drawing, these super duplex stainless steel tubes exceed ASTM A790 tolerances for demanding offshore, chemical processing, and FGD applications.

Key Technical Specifications

Chemical Composition (ASTM A790 Table 1)

Element	Min %	Max %	Typical %
Cr	24.0	26.0	25.2
Ni	6.0	8.0	6.8
Mo	3.0	4.0	3.5
N	0.20	0.30	0.25
C	-	0.03	0.02
Mn	-	1.2	0.8
Fe	Balance	-	62.5

Mechanical Properties

Parameter	Requirement	Test Standard
Tensile Strength	≥ 750 MPa	ASTM A370
Yield Strength (0.2% offset)	≥ 550 MPa	ASTM A370
Elongation (% in 50mm)	≥ 15%	ASTM A370
Hardness (HBW)	≤ 310	ASTM E10
Impact Toughness (-46°C)	≥ 45 J	ASTM A370

Dimensional Tolerances (Per ASTM A790)

Dimension	Hot-Finished	Cold-Drawn
OD Tolerance	±1.0% or ±0.5mm	±0.5% or ±0.25mm
Wall Thickness	+20%/-0%	±10%
Straightness	3mm/m max	1.5mm/m max

Equivalent Standards & Grades

Region	Standard	Grade
International	EN 10216-5	1.4507
Europe	EN 10088-3	X2CrNiMoN25-7-4
Japan	JIS G3463	SUS 329J4L
Unified Number	UNS	S37500

Key Advantages

Superior Corrosion Resistance: PREN >40 outperforms 316L in chlorides
2X Strength vs. Austenitic SS: Reduces wall thickness/weight
Thermal Stability: Maintains properties up to 300°C (572°F)
Weldability: Qualified per ASME IX with ER2594 filler
Certified Traceability: DNV GL/ABS/PED 2014/68/EU

Primary Applications

Industry	Critical Use Cases
Offshore Oil & Gas	Subsea manifolds, Riser pipes, Christmas trees
Desalination Plants	RO membranes, Brine heaters, Evaporator tubes
Chemical Processing	Acid coolers, Reactor coils, CIP systems
Pollution Control	FGD ducting, Scrubber modules
Pulp & Paper	Digester vessels, Bleach plants

Why Choose Our S3750 Pipes?

Mill Direct Pricing: Stocked in sizes 1/2" to 24" (Sch 10S to XXS)
Full Compliance: Supplied with EN 10204 3.2 Certificates
Specialized Processing: Solution annealing at 1080±20°C + water quenching
Non-Destructive Testing: 100% UT + Hydrostatic testing per ASTM A1016
Global Logistics: EXW/FOB/CIF to Americas/Middle East/APAC

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