ASTM A789 UNS S32750 Super Duplex Pipe

ASTM A789 UNS S32750 is a super duplex stainless steel widely used in applications requiring high strength and corrosion resistance.

standard:ASTM

shape:Round/Rectangle

introduction

ASTM A789 standard specification applies to the production of seamless and welded duplex stainless steel pipes. UNS S32750 stainless steel pipe is a super duplex stainless steel containing about 25% chromium, 7% nickel, 4% molybdenum and 0.3% nitrogen. It has good formability and can be processed by hot forming and cold forming.
Compared with 300 series austenitic stainless steel or traditional duplex alloys, S32750 duplex stainless steel tubing has enhanced resistance to pitting and crevice corrosion, and the duplex structure gives S32750 excellent resistance to chloride stress corrosion cracking.
S32750 super duplex pipe is widely used in occasions requiring high strength and high corrosion resistance, such as submarine pipelines, shipbuilding and offshore gas field production.
The use of EN 1.4410 stainless steel seamless pipe should be limited to applications below 6000°F (3316°C). Prolonged exposure to high temperatures may reduce its toughness and corrosion resistance.

Data table

Super Duplex Steel UNS S32750 Welded Tubes Chemical Composition

Ni	6.00 – 8.00
Fe	58.095 min
Cr	24.00 – 26.00
C	0.030 max
Si	0.80 max
Mn	1.20 max
P	0.035 max
S	0.020 max
N	0.24 – 0.32

ASTM A789 UNS S32750 Duplex Stainless Steel Tube Mechanical Properties

Grade	S32750
Density (g/cm 3)	7.8
Density (lb/in 3)	0.281
Melting Point (°C)	1350
Melting Point (°F)	2460

Standards Specification of Super Duplex Steel 2750 Pipe & Tube

Specifications	ASTM A 789 / 790, ASME SA 789 / 790
Grade	Super Duplex Steel UNS S32750, S32760, S31254 (SMO254)
Outer Diameter	6.00 mm OD up to 250 mm OD, Sizes up to 12" NB
Thickness	0.3mm – 50 mm
Length	Single Random, Double Random & Required Length.
Form	Round, Rectangular, Hydraulic, Square.
Type	Seamless / ERW / Welded / Fabricated / CDW.
End	Plain End, Beveled End, Threaded

company advantage

Why Choose GNEE

GNEE is a professional Chinese stainless steel pipe manufacturer and stainless steel pipe supplier, specializing in industrial stainless steel welded pipes and special alloy pipes, with an annual production capacity of up to 7000 tons.
The produced pipes comply with GB, ASTM/ASME, JIS, DIN, EN, GOST and ISO standards.
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