ZERON® 100 - Super Duplex Stainless Steels Available from NeoNickel
Global
  • ZERON® 100

ZERON® 100 is a cost-effective super duplex stainless steel which has been designed to cope well in aggressive and harsh environments. Its excellent performance can meet with a variety of applications, and displays effective resistance to stress corrosion cracking and corrosion resistance under warm seawater conditions, along with superior pitting. Because of these features, ZERON® 100 has become a popular choice used widely across different industries.

Chemistry

Cr Ni Mo Cu W C N Mn Si P S Fe
MIN 24.0 6.0 3.0 0.5 0.5 0.2
MAX 26.0 8.0 4.0 1.0 1.0 0.03 0.3 1.0 1.0 0.030 0.010 Balance

PREN = %Cr + 3.3x%Mo + 16x%N    ZERON® 100 PREN > 40

Applications

  • Subsea Pipework Systems
  • Heat Exchangers
  • Pressure Vessels
  • Flue Gas Desulfurization Equipment
  • Pulp and Paper
  • Power Generation

Properties

Mechanical Properties

Temperature, °C (°F) 20 (68) 100 (212) 150 (302) 200 (392) 250 (482)
Ultimate Tensile Strength, ksi 109 102 99 97 94
0.2% Offset Yield Strength, ksi 80 68 65 62 58

Design Stresses – Pressure Vessels (ASME)

ZERON® 100 (UNS S32760) is covered for ASME Section VIII, Division 1 construction by code case 2245 and in Section III, Division 1 by Case N-564-2. It is also included in B16.5 (Pipe Flanges and Flanged Fittings), B16.34 (Valves – Flanged, Threaded, and Welding End), 16.47 (Large Diameter Steel Flanges: NPS 26 through NPS 60), B31.3 (process Piping).

Temp, °C (°F) 37.8 (100) 93.3 (200) 149 (300) 204 (400) 260 (500) 316 (600)
Zeron ® 1001 31.1 ksi 31.0 ksi 29.4 ksi 29.0 ksi 29.0 ksi 29.0 ksi
22051 25.7 ksi 25.7 ksi 24.8 ksi 23.9 ksi 23.3 ksi 23.1 ksi
AL-6XN®1 27.1 ksi 27.1 ksi 25.7 ksi 24.6 ksi 23.8 ksi 23.3 ksi
ZERON® 1002 36.3 ksi 35.9 ksi 34.4 ksi 34.0 ksi 34.0 ksi 34.0 ksi

 

1 ASME Section VIII, Division 1; 2ASME B31.3

Impact Strength

ZERON® 100 has good impact strength. There is no true ductile brittle transition, just a gradual decrease in impact energy as the temperature is lowered. The impact energy varies according to product type and production route.  The impact strength of welded ZERON® 100 is slightly less than that of parent metal.

Present data suggests that 40J (30ft.lbf) is a suitable acceptance criterion for duplex stainless steels and figure 1 shows that 40J is achievable with all product forms of ZERON® 100 (UNS S32760) down to very low temperatures.  To obtain good impact toughness after welding, it requires a higher level of impact toughness in the parent material.  ZERON® 100 super duplex stainless steel base metal typically has a Charpy toughness > 70J at -50°C.

Corrosion Resistance

ZERON® 100 compares favorably in chloride pitting resistance to more expensive 6% molybdenum alloys and is superior to 2205 or 316L.

Alloy % Mo CCCT, °C (°F) CPT, °C (°F) PREN
316L 2.1 < -2.22 (28) 20 (68) 24
2205 3.1 20 (68) 49 (120) 35
904L 4.4 24 (75) 54.4 (130) 36
ZERON® 100 3.5 42.2 (108) 82 (180 ) 41
AL-6XN 6.2 43.3 (110) 77.8 (172) 44
625 9.0 45 (113) 51
C22 13 64
C-276 15.5 54.4 (130) > 103 (217) 67

Available Product Forms

Performance Profile

One of the most notable features of ZERON® 100 is its impact strength, without any true ductile brittle transition; the alloy merely shows a gradual decrease in its impact energy as temperatures lower, setting it apart from other alloys. The impact energy is variable depending on the production and product type. Welded ZERON® 100’s impact strength is only slightly lower than the parent metal’s.

zeron_100History of ZERON® 100

ZERON® 100 first began its development as a corrosion resistant material to be used for North Sea oil pumps. Because this was a difficult task with other alloys so easy to corrode, ZERON® 100 was introduced and quickly became a game-changer in the industry. With its outstanding performance gaining so much attention, the alloys are now used across various diverse industries in a wide choice of different product forms. Common trade names for ZERON® 100 include Super Duplex, 25Cr Duplex, Super Duplex Stainless, F55 Duplex, UNS S32760, and EN 1.4501.

Features of ZERON® 100

ZERON® 100’s impressive features make it a highly functional alloy. These include:

  • GUARANTEED excellence in corrosion performance, with superior resistance to seawater crevice corrosion
  • Cost-effectiveness and reliability
  • Outstanding resistance against stress corrosion cracking under most conditions, including sour and chloride
  • Great resistance to most concentrations of sulphuric acid because of its copper addition
  • Better resistance to corrosion fatigue and erosion corrosion than other stainless steels

Properties of ZERON® 100

Typically ZERON® 100 contains 25 per cent chromium, 7 per cent nickel and 3.6 per cent molybdenum plus the addition copper and tungsten – although it can be modified for various applications.

To buy ZERON® 100 or learn more  get in touch, or fill in our online quote form and we’ll get right back to you!