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Zeron 100 (5605 views - Material Database)

Zeron 100 is a super duplex stainless steel developed by Rolled Alloys (formerly Weir Materials). The alloy has excellent corrosion resistance combined with high strength. It typically contains 25% chromium and 7% nickel and 3.6% molybdenum along with copper and tungsten additions. Zeron 100 has a 50–50 austenitic–ferritic structure. It also has greater resistance to chloride pitting, crevice corrosion and stress corrosion cracking than exhibited by the standard 300 series stainless steels. The UNS Designation of the Zeron 100 is S32760. Zeron 100 with a composition of 25% chromium, 3.6% molybdenum and 0.7% tungsten has good pitting resistance to various chlorides and organics acids. Zeron 100 is made to meet a minimum pitting resistance equivalent (PREn) value of 40. The ferritic structure and alloy additions, such as nitrogen provide yield strengths that are twice that of 300 series stainless steels. ZERON 100 plate is included in the ASTM A240 specification. Its minimum room temperature mechanical property requirements are 109,000 psi (ultimate tensile strength), 80,000 psi (0.2% offset yield strength) and 25% minimum elongation. Zeron 100 has a copper addition which provides good resistance to sulfuric acid. For this reason, it is used in acid leach mining applications, steel pickling and other industries where sulfuric acid is encountered. There are modified versions of Zeron 100 for specific applications. Zeron 100FG is a fastener grade of round bar. It is a cold drawn product with higher strength properties than standard Zeron 100. Zeron 100AFP is an advanced forging grade which has been developed for use in subsea oil and gas applications where good mechanical properties must be preserved at temperatures of about −70 °C.
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Zeron 100

Zeron 100

Zeron 100 is a super duplex stainless steel developed by Rolled Alloys (formerly Weir Materials). The alloy has excellent corrosion resistance combined with high strength. It typically contains 25% chromium and 7% nickel and 3.6% molybdenum along with copper and tungsten additions. Zeron 100 has a 50–50 austeniticferritic structure. It also has greater resistance to chloride pitting, crevice corrosion and stress corrosion cracking than exhibited by the standard 300 series stainless steels.

The UNS Designation of the Zeron 100 is S32760.

Zeron 100 with a composition of 25% chromium, 3.6% molybdenum and 0.7% tungsten has good pitting resistance to various chlorides and organics acids. Zeron 100 is made to meet a minimum pitting resistance equivalent (PREn) value of 40. The ferritic structure and alloy additions, such as nitrogen provide yield strengths that are twice that of 300 series stainless steels.

ZERON 100 plate is included in the ASTM A240 specification. Its minimum room temperature mechanical property requirements are 109,000 psi (ultimate tensile strength), 80,000 psi (0.2% offset yield strength) and 25% minimum elongation.

Zeron 100 has a copper addition which provides good resistance to sulfuric acid. For this reason, it is used in acid leach mining applications, steel pickling and other industries where sulfuric acid is encountered.

There are modified versions of Zeron 100 for specific applications. Zeron 100FG is a fastener grade of round bar. It is a cold drawn product with higher strength properties than standard Zeron 100. Zeron 100AFP is an advanced forging grade which has been developed for use in subsea oil and gas applications where good mechanical properties must be preserved at temperatures of about −70 °C.

History

Zeron 100 was originally developed by Dr. Kevan Gradwell whilst working at Mather+ Platt in Manchester, England. Mather+ Platt successfully marketed Zeron 100 primarily in the manufacture of their advanced centrifugal pumps for the oil industries. The wrought form of Zeron 100 was licensed by Mather + Platt, to British Steel. Subsequently, when Weir Pumps purchased Mather + Platt, they took over the material but they were not the original developers of Zeron 100.

Industry applications

Forms[1]

  • Bar
  • Billet
  • Fittings
  • Pipe
  • Plate
  • Sheet
  • Welding Products

Specifications

  • ASTM A 182
  • ASTM A 182 (Grade F55)
  • ASTM A 240
  • ASTM A 276
  • ASTM A 473
  • ASTM A 479
  • ASTM A 790
  • ASTM A 815
  • ASTM A314
  • NORSOK MDS 055
  • UNS S32760
  • W. Nr./EN 1.4501

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