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Super duplex steel UN32750

(UNS S32750) is a super-duplex stainless steel; a high-alloy duplex steel with a PRE value of min. 42*. The grade is characterized by very good chloride corrosion resistance, combined with very high mechanical strength. Super duplex steel is particularly suited for use in aggressive environments such as warm chlorinated seawater and acidic, chloride containing media.

Need to know morEMAIL USA multi-purpose super-duplex steel

Suitable for service in highly corrosive conditions and where high strength is required, the properties of Super duplex steelare being widely used in offshore oil and gas exploration and production and in heat exchangers in petrochemical and chemical processing. The grade is also suitable for hydraulic and instrumentation applications in tropical marine environments.

Main characteristics
  • Very high resistance to pitting and crevice corrosion
  • Excellent resistance to stress corrosion cracking (SCC) in chloride bearing environments
  • High resistance to general corrosion in acids
  • Excellent resistance to erosion corrosion
  • Excellent resistance to corrosion fatigue
  • Very high mechanical strength
  • Good weldability

Super Duplex Steel Studs

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Product Details:
Material GradeSuper duplex Steel Fasteners 32750

Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grades.

The balanced duel phase microstructure combines high strength with cost effective corrosion resistance particularly in high chloride environments. Super Duplex has the same benefits as its counterpart – it has lower alloying costs when compared with similar ferritic and austenitic grades with equipment corrosion resistance in chloride containing environments due to the material’s increased tensile and yield strength. In many cases this gives the purchaser the welcomed option of purchasing smaller thicknesses without the need to compromise on quality and performance.

Available Tube Product form
  • Straight
  • Coiled
  • Seamless
  • Seam welded, cold redrawn and annealed
Typical Applications
  • Subsea control lines
  • Offshore platforms
  • Fire-fighting systems
  • Injection & ballast water systems
  • Heat exchangers
Industries predominantly using this Grade
  • Chemical processing
  • Oil and gas
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Super Duplex Steel Nuts

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Product Details:
GradeSuper duplex Steel nuts UN32750

Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grades.
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Super Duplex Steel Bolts

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Product Details:
GradeSuper duplex Steel Bolts UN32750

Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grades.
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Super Duplex Steel Washers

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Product Details:
Material GradeSuper duplex Steel Washers UN32750

Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grades.
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Aanuraj Industries
Tushar Desai (CEO)
G6-A, Unit No. 10, Sagar Industrial Estate, Dhumal Nagar Waliv, District Thane, Vasai West,
Vasai - 401208, Maharashtra, India
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