Overview
CE3MN, also known as 5A, is a duplex stainless steel that offers a compelling combination of high strength and excellent corrosion resistance. This alloy's duplex microstructure, consisting of a balanced mix of austenite and ferrite phases, contributes to its enhanced mechanical properties and its ability to resist various forms of corrosion. CE3MN is particularly well-suited for demanding environments where components are exposed to harsh corrosive conditions, such as seawater and chemical processing applications. Its combination of high strength and superior corrosion resistance makes it a valuable choice for applications where structural integrity and longevity are critical.
Typical Uses
Desalination equipment, oil & gas, chemical processing, and seawater applications.
MetalTek Designation
MTEK 2507
Poured At:
Carondelet Division, Sandusky International Division, Wisconsin Centrifugal Division, Wisconsin Investcast Division
Similar Specifications
Cast UNS: J93404
Wrought UNS: S32750
Wrought Grade: 2507
Cast Grade: CE3MN, 5A
Cast ASTM: A890, A995
Typical Chemical Composition (% by wt.)
Aluminum: n/a
Carbon: 0.03
Chromium: 24-26
Manganese: 1.50
Iron: n/a
Copper: n/a
Nickel: 6-8
Lead: n/a
Tin: n/a
Silicon: 1.00
Zinc: n/a
Other: Mo 4-5; N 0.10-0.30
Minimum Mechanical Properties
Heat Treatment: Solution Annealed
Frequently Asked Questions
Duplex stainless steel contains a balanced mix of austenitic and ferritic phases, offering high strength, good corrosion resistance, and better stress corrosion resistance than standard austenitic grades.
Super duplex stainless steel contains a higher percentage of chromium, molybdenum, and nitrogen than standard duplex steel, offering enhanced strength and corrosion resistance.
Super duplex stainless steel offers higher levels of chromium, molybdenum, and nitrogen, leading to enhanced strength and corrosion resistance compared to standard duplex grades. Super duplex is generally preferred in extreme environments.
Duplex stainless steels are highly resistant to rust and other forms of corrosion, although they can be susceptible in highly acidic or chloride-rich environments without proper maintenance.
Commonly used in chemical processing, marine environments, oil and gas, desalination plants, medical devices, and food processing equipment.
They offer superior strength, excellent resistance to stress corrosion cracking, and better weldability compared to many austenitic steels.
Duplex steels offer higher strength and better chloride stress corrosion resistance but lower ductility than austenitic stainless steels.
Industries such as offshore oil and gas, chemical processing, marine engineering, and desalination rely on super duplex stainless steel for its corrosion performance.
