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Stainless Steel Pipe Duplex F55 UNS S32760 Corrosion Resistant Pipes
Duplex F55, often referred to by its UNS designation UNS S32760, is a super duplex stainless steel that is highly alloyed and designed for high strength and excellent corrosion resistance. It is not a nickel alloy but a stainless steel. It is composed primarily of iron, with a high percentage of chromium and nickel, and significant amounts of molybdenum and nitrogen, enhancing its corrosion resistance and strength. Here are detailed attributes and applications of Duplex F55 pipes:
Specifications and Standards
Duplex F55 pipes are produced according to international standards and specifications, such as:
ASTM A789 / ASME SA789 (Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service)
ASTM A790 / ASME SA790 (Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe)
Applications
Oil and Gas Industry: Equipment such as pipes, valves, pumps, and heat exchangers that require excellent corrosion resistance and high strength in sour environments often use super duplex materials.
Desalination Plants: The sea-water resistance of F55 makes it suitable for high-pressure piping and other components in desalination plants.
Chemical Processing: Because of its resistance to a wide variety of chemicals, super duplex stainless steel is used in reactors, tanks, and piping in chemical processing industries.
Marine and Shipping Industry: Its strength and corrosion resistance in marine environments make it suitable for use in shafts, rudders, and shaft seals.
Physical and Mechanical Properties
Density: Approximately 7.8 g/cm³
Tensile Strength: Around 750 MPa to 930 MPa
Yield Strength (0.2% Offset): Minimum 550 MPa
Elongation: About 25% minimum
Duplex F55 is distinguished by its superior combination of mechanical strength and corrosion resistance, making it a material of choice for critical applications that require both high-performance and long-lasting durability in aggressive environments. It is widely used for piping systems and other components in demanding sectors like offshore oil and gas, chemical processing, and marine engineering.
Grade
UNS
Tensile Strength
(MPa min)
Yield Strength
(MPa min)
Reduction of Area min (%)
Elongation min (%)
Hardness (HRC)
F55
S32760
750MPa min
550MPa min
45% min
25% min
/
Chemical Composition(%):
Ni
C
P
Mn
W
S
Mo
6.0-8.0
0.03max
0.03max
1.0max
0.5-1.0
0.01max
3.0-4.0
Si
Cu
Cr
N
1.0max
0.5max
24.0-26.0
0.2-0.3
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1998
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.
We have complete advanced technology facilities t... Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.
We have complete advanced technology facilities t...
