W.Nr.2.4660、NiCr20CuMo、CN7M

W.Nr.2.4660 Product Overview:
W.Nr.2.4660 alloy corrosion-resistant alloy is a chromium-nickel-molybdenum-copper solid solution-strengthened iron-nickel-based alloy, which is characterized by resistance to oxidation-reducing composite medium corrosion. It has good corrosion resistance in many other redox media. W.Nr.2.4660, especially in the environment of dilute sulfuric acid (concentration below 30%), can exert its advantages of good corrosion resistance, and has excellent resistance to stress corrosion cracking and good local corrosion resistance. 2.4660 has satisfactory corrosion resistance in many chemical process media, including highly aggressive inorganic acid solutions, chlorine and various media containing chloride, dry chlorine, formic acid and acetic acid, anhydride, seawater and brine.

W.Nr.2.4660 alloy chemical composition:

%	Ni	Cr	Cu	C	Mn	Si	Mo	Nb	P	S
Min.	32.032.0	19.0	3.0				2.0	8*C8
Max.	38.0	21.0	4.0	0.07	2.0	1.0	3.0	1.0	0.045	0.035

 Similar grades of W.Nr.2.4660 alloy:
Alloy 20 UNS N08020 (USA), NS143 NS1403 0Cr20Ni35Mo3Cu4Nb (China), W.Nr.2.4660 NiCr20CuMo (Germany), CN7M

Application of W.Nr.2.4660 alloy:
W.Nr.2.4660 is used in sulfuric acid environment and sulfuric acid solution containing halogen ions and metal ions, such as hydrometallurgy and sulfuric acid industrial equipment.
W.Nr.2.4660 alloy is excellent in hot processing, cold processing and welding performance, and it is also easy to cast.
W.Nr.2.4660N is mainly used in various chemical processing (such as oil refining, pharmacy, fertilizer and synthetic rubber, etc.), food processing, textile, papermaking and hydrometallurgy industries. W.Nr.2.4660 is in sulfuric acid, sulfur nitrate Reactors, heat exchangers, storage tanks, pumps, valves and other components used under the conditions of mixed acid and phosphoric acid and other reducing media.

W.Nr.2.4660 alloy physical properties:
Density: 8.08 g / cm3,
Melting point: 1357-1430 ° C.

W.Nr.2.4660 alloy mechanical properties:
Tensile strength (MPA) Rm N / mm2 ≥ 620,
Yield strength (MPA) RP0.2N / mm2 ≥ 300,
Elongation A5% ≥ 40.

Special alloy materials commonly used in the chemical industry:
Stainless steel: 253MA, 316L, 353MA, 654SMO, 904L, etc.
Nickel-based alloys: Alloy 31, Alloy 59, Hastelloy B, Hastelloy C, Hastelloy C-276, etc.
Corrosion-resistant alloys: NS112, NS322, NS333, NS335