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.
PREN = %Cr + 3.3x%Mo + 16x%N ZERON® 100 PREN > 40
- Subsea Pipework Systems
- Heat Exchangers
- Pressure Vessels
- Flue Gas Desulfurization Equipment
- Pulp and Paper
- Power Generation
|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
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.
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|
|C-276||15.5||54.4 (130)||> 103 (217)||67|
Available Product Forms
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.
History 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.
- ZERON® 100 Data Sheet
- ZERON® 100 Oil and Gas Production
- ZERON® 100 Chemical and Process Industries
- ZERON® 100 Swimming Pools
- ZERON® 100 – Used To Extend The Lifespan Of The Thames Barrier
- ZERON® 100 Fasteners
- ZERON® 100 For The Marine Industry