Duplex¡¯s premium mechanical and chemical properties are slightly offset by its difficulty in formability.
These grades are excellent for fixed service simple flange connections, but slightly less so when forming a complex metallic shape. Fortunately, the workability of duplex into complex and rounded structures is less of an issue in structural steel given the wide preference for simple mild steel in non corrosive applications.
Through additions of chromium, molybdenum and nitrogen localized corrosion such as pitting and crevice attack are improved. Alloy 2507 has excellent localized pitting resistance.
Duplex 2507 has high resistance to chloride stress corrosion cracking, high Strength, and superior resistance to chloride pitting and crevice corrosion.
2507 has Good general corrosion resistance, Suggested for applications up to 600¡ã F, and Low rate of thermal expansion.
2507 has Combination of properties given by austenitic and ferritic structure, and Good weldability and workability.
Duplex 2507 is usually used in Desalination Equipment, Chemical process pressure vessels, piping and heat exchangers and Marine Applications.
2507 is also used in Flue Gas Scrubbing Equipment, Pulp and Paper Mill Equipment, Offshore Oil production/technology and Oil and gas industry equipment.
2507 (UNS S32750) is a super duplex stainless steel designed for applications which require exceptional strength and corrosion resistance. 2507 is a 25% chromium, 4% molybdenum, and 7% nickel alloy resulting in excellent resistance to chloride pitting and crevice corrosion attack.
The duplex structure provides 2507 with exceptional resistance to pitting and chloride stress corrosion cracking.
Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance.
Super Duplex UNS S32750 is the most common super duplex grade in the market. UNS S32750 is a duplex stainless steel especially designed for service in aggressive chloride-containing environments.
Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.
Usage of Duplex 2507 should be limited to applications below 600¡ã F (316¡ã C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507.
Duplex 2507 possesses excellent mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy.
2507 Duplex is highly resistant to uniform corrosion by organic acids such as formic and acetic acid.
It is alsohighly resistant to inorganic acids, especially if they contain chlorides.
Alloy 2507 is highly resistant to carbide-related intergranular corrosion.
Due to the ferritic portion of the duplex structure of the alloy it is very resistant to stress corrosion cracking in warm chloride containing environments.
Its toughness lends itself to use in nuclear power plants, mining, cement, and the oil and gas industry.
Monel 400 is corrosion resistant to most salts, water, alkalis, organic substances, food products, and atmospheric conditions at both normal and elevated temperatures.
This is a nickel-copper, solid-solution alloy that is hardenable only by cold working. It has high strength and toughness over a wide temperature range and is resistant to many corrosive environments.
The alloy is used in many fields, especially marine and chemical processing.
Typical applications are valves and pumps; pump and propeller shafts; marine fixtures and fasteners.
ALLOY400 is a single-phase solid-solution Ni-Cu alloy with excellent corrosion resistance to a wide range of media.
Monel 400 is a nickel-copper alloy of about 67% Ni and 23% Cu.
ALLOY400 is a single-phase solid-solution Ni-Cu alloy with excellent corrosion resistance in a wide range of marine and chemical environments and has freedom from chloride induced stress-corrosion cracking.
Valued for its high strength and corrosion-resistant properties, Monel 400 is available from Continental Steel in multiple forms for use in a variety of end uses.
ALLOY400 is a single-phase solid-solution Ni-Cu alloy with good mechanical properties from sub-zero temperatures up to about 550 ¡ãC (1020 ¡ãF) and is approved for pressure vessels with wall temperatures from -10 to 425 ¡ãC (14 to 800 ¡ãF) according to VdTUV-Wbl. 263 and up to 900 ¡ãF (480 ¡ãC) according to ASME Boiler and Pressure Vessel Code.
Monel 400 (also known as alloy 400) is an attractive option for industries where corrosion resistance is of the highest priority.
