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UNS S32760 F-55

In seawater and other chloride-containing environments, stainless steel grade F55 is very resistant to pitting and crevice corrosion. It has a critical pitting temperature of more than 50 °C (122 °F), which makes it very resistant to these types of corrosion. People also say this material is strong and has a long life. Grade 316 steel is 10% lighter than grade 316 steel.It's good for sub-zero service, and it's cheaper than the nickel alloys. Stainless steel grade F55 is easy to machine and weld.

A grade called UNS S32760 Super Duplex is one of the most commonly used super duplex grades on the market today. A duplex stainless steel called UNS S32760 has been made with more W and Cu than UNS S32750 so that it can be used in environments that are very acidic. It has a lot of resistance to local corrosion and stress corrosion cracking, but it also has a lot of strength.

SPECIFICATION :


  • F55/ UNS 32760
  • ASTM A276
  • ASTM A479
  • ASME SA479
  • W.1.4501
  • EN 10088-3
  • NACE MR0175/ ISO 15156-3
  • NACE MR0103/ ISO 17945

Chemical Composition :


Weight % C Si Mn S P Cr Ni Mo N Cu W
Min. 24,00 6,00 3,00 0,20 0,50 0,50
Max. 0,030 1,00 1,00 0,010 0,030 26,00 8,00 4,00 0,30 1,00 1,00


Mechanical Properties :


Yield strength Rp0.2,MPa Tensile Strength Rm,MPa Elongation[%] Hardness[HB] Impact, Charpy-V, -196ºC[J] pre
BAR ≥ 550 ≥ 750 ≥ 25 ≤ 310 ≥ 45 ≥ 40
PLATE CR (COIL) ≥ 550 750 – 1000 ≥ 25 ≤ 310 ≥ 45 ≥ 40
PLATE HR (COIL) ≥ 550 750 – 930 ≥ 25 ≤ 310 ≥ 45 ≥ 40
PLATE (QUARTO) ≥ 550 750 – 930 ≥ 25 ≤ 310 ≥ 45 ≥ 40






APPLICATION :


The main applications are for details with special requirements for high corrosion resistance

UNS S32750 is characterized by:

  • High resistance to stress corrosion cracking in halide containing environments
  • High resistance to pitting and crevice corrosion.
  • High resistance to general corrosion.
  • High mechanical strength
  • High resistance to erosion corrosion and corrosion fatigue.
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