Alloy 20（UNS N08020）

Alloy 20 (UNS N08020)

 

Alloy 20 product overview:

alloy 20 alloy corrosion-resistant alloy is a chromium-nickel-molybdenum copper solid solution strengthened iron-nickel-based alloy, which is characterized by resistance to oxidation-reduction composite medium corrosion. Both have good corrosion resistance. Alloy 20, especially in the environment of dilute sulfuric acid (concentration below 30%), can best exert its advantages of good corrosion resistance. It has excellent resistance to stress corrosion cracking and good local corrosion resistance. Alloy 20 is used in many chemical process media It has satisfactory corrosion resistance properties, including highly aggressive inorganic acid solutions, chlorine gas and various media containing chloride, dry chlorine gas, formic acid and acetic acid, anhydride, seawater and brine.

 

Alloy 20 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 brands of Alloy 20:

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

 

Alloy 20 alloy applications:

Alloy 20 is used in sulfuric acid environments and sulfuric acid solutions containing halogen ions and metal ions, such as hydrometallurgy and sulfuric acid industrial installations.

Alloy 20 alloy is excellent in hot work, cold work and welding performance, and is also easy to cast.

Alloy 20 is mainly used in various chemical processing (such as oil refining, pharmaceuticals, fertilizers and synthetic rubber, etc.), food processing, textiles, papermaking and hydrometallurgy industries. Reactors, heat exchangers, storage tanks, pumps, valves and other components used under medium conditions.

 

Alloy 20 alloy physical properties:

Density: 8.08 g / cm3,

Melting point: 1357-1430 ° C.

 

Alloy 20 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