Industeel UREA 25.22.2 Plants

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Industeel UREA 25.22.2 Plants
Categories:	Metal; Ferrous Metal; Austenitic; Stainless Steel; T 300 Series Stainless Steel
Material Notes:	Description: CLI UREA 25.22.2 chemical composition has been optimized for specific uses in Urea plants. It is a 310L modified austenitic stainless steel with low carbon, low silicon and high nitrogen additions in order to stabilize and strengthen the austenitic phase. The alloy is designed to obtain a fully austenitic stainless steel free of intermetallic phases as intergranular carbide precipitations which affects the corrosion resistance properties of the alloy in urea containing solutions. The ferrite level is kept under 0.5% in the solution annealing and water quenched conditions. The alloy is particularly designed for improved corrosion resistance properties in urea carbonate environments including strippers. The grade is also well designed for resistance in wet corrosive conditions due to its high contents of chromium, molybdenum and nitrogen (PREN = 33) Information provided by manufacturer.
Key Words:	EN 10028-7 X1 Cr Ni Mo N 25.22.2 - 1.4466, AFNOR Z2 CND 25.22.AZ, DIN W.Nr 1.4466 / 1.4465, ASTM 310 Mo LN
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Physical Properties	Original Value	Comments

Density	7.90 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	550 MPa	Typical after Solution Annealing
Tensile Strength, Yield	260 MPa @Strain 0.2 %	Typical after Solution Annealing
	290 MPa @Strain 1 %	Typical after Solution Annealing
Elongation at Break	40 %	Typical
Modulus of Elasticity	200 GPa
Poissons Ratio	0.333	Calculated
Shear Modulus	75.0 GPa @Temperature 20.0 °C
Charpy Impact	>= 120 J

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000950 ohm-cm @Temperature 20.0 °C

Thermal Properties	Original Value	Comments
CTE, linear	16.0 µm/m-°C @Temperature 20.0 - 100 °C
	16.5 µm/m-°C @Temperature 20.0 - 300 °C
	17.5 µm/m-°C @Temperature 20.0 - 500 °C
Specific Heat Capacity	0.500 J/g-°C @Temperature 20.0 °C
Thermal Conductivity	14.0 W/m-K @Temperature 20.0 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.020 %
Chromium, Cr	25 %
Iron, Fe	48.36 - 50.78 %	As remainder
Manganese, Mn	<= 2.0 %
Molybdenum, Mo	2.1 %
Nickel, Ni	22 %
Nitrogen, N	0.12 %
Silicon, Si	<= 0.40 %

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NINDUST37 / 17575

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