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S32760 (also called F55 or 1.4501) is a high-alloy super duplex stainless steel featuring exceptional strength and corrosion resistance. Primarily used in demanding corrosive environments including chemical processing, petrochemical applications, and submarine equipment.
Chemical Composition of S32760 Super Duplex Stainless Steel
Element
Min (%)
Max (%)
Ni
6.0
8.0
Cr
24.0
26.0
Mo
3.0
4.0
Mn
-
1.0
Cu
0.5
1.0
Si
-
1.0
C
-
0.03
N
0.2
0.3
S
-
0.01
P
-
0.03
W
0.5
1.0
Fe
Balance
Key Features of S32760 Super Duplex Stainless Steel
S32760 duplex steel offers exceptional resistance to chloride corrosion, high thermal conductivity, and low coefficient of thermal expansion. The elevated chromium, molybdenum, and nitrogen content provide superior resistance to pitting, crevice corrosion, and other corrosive attacks. The comprehensive performance of S32760 exceeds that of standard duplex steels like 2205 and S31803.
This material demonstrates resistance to various inorganic and organic acids. The copper addition enhances resistance to non-oxidative acid corrosion. S32760 also withstands strong alkali corrosion, though prolonged exposure above 300°C is not recommended as it may reduce material toughness.
Originally developed in the 1980s as cast steel to address corrosion resistance limitations in second-generation duplex stainless steels, S32760 evolved into a deformable material for pipeline systems. It has become essential in oil and gas development, seawater environments, flue gas desulfurization (FGD), desalination, and chemical applications.
The inclusion of tungsten and copper, initially for improved casting properties, was later found to enhance corrosion resistance in specific acids and passivation capability in seawater. The microstructure features a balanced α/γ two-phase structure under proper solid solution conditions, requiring controlled cooling rates to prevent precipitation of intermetallic phases and nitrides.
S32760 Super Duplex Stainless Steel Applications
Neutral chloride environments
Oil refining industry
Chemical industry pipelines
Oil and gas industry
Pulp and paper industry
Fertilizer industry (urea, phosphate)
Seawater environments and energy/environmental protection
Food and pharmaceutical industry equipment
High strength structural components
Flue gas desulfurization and desalination equipment
Submarine pipelines and marine engineering fasteners
Various other industrial applications
Product Gallery
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
500,000,000-800,000,000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Company Overview ：
The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation.
The subordinate processing plant has 6 sets of medium frequency h... Company Overview ：
The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation.
The subordinate processing plant has 6 sets of medium frequency h...
