Industeel URANUS® 65 310 L Modified Grade - Low C and Si for Nitric Acid Service

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Industeel URANUS® 65 310 L Modified Grade - Low C and Si for Nitric Acid Service
Categories:	Metal; Ferrous Metal; Austenitic; Stainless Steel; T 300 Series Stainless Steel
Material Notes:	Description: URANUS® 65 is a 25 Cr 20 Ni austenitic stainless steel with sharp control of the residual elements in order to provide high corrosion resistance properties in boiling 50-65% Nitric acid solutions. The silicon content is kept under 0.3% while the carbon content is lower than 0.015%. Molybdenum additions are also well known to reduce the behavior of the steel in nitric acid solutions. This explains why the molybdenum content is guaranteed lower than 0.3%. The sharp control of Carbon, Silicon and phosphorus contents makes it possible to produce a more stable austenite microstructure, free of intermetallic or carbide precipitations. The alloy is designed for nitric acid applications. The grade is not recommended for concentrated nitric acid purposes or highly oxidizing nitric acid solutions (with Gr VI species...) Information provided by manufacturer.
Key Words:	EURONORM X1 Cr Ni 25.21 - 1.4335, AFNOR Z1 CN 25.20, WERKSTOFF Nr 1.4335, ASTM 310 L NAG
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Physical Properties	Original Value	Comments

Density	7.90 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	155	Average
Tensile Strength, Ultimate	>= 490 MPa	Minimum Guaranteed
Tensile Strength, Yield	>= 215 MPa @Strain 0.2 %
	>= 245 MPa @Strain 1 %
Elongation at Break	>= 40 %
Modulus of Elasticity	195 GPa
Poissons Ratio	0.30	Calculated
Shear Modulus	75.0 GPa @Temperature 20.0 °C

Thermal Properties	Original Value	Comments
CTE, linear	15.8 µm/m-°C @Temperature 0.000 - 100 °C
	16.5 µm/m-°C @Temperature 0.000 - 300 °C
	17.3 µm/m-°C @Temperature 0.000 - 500 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.015 %
Chromium, Cr	25 %
Iron, Fe	51.635 - 54.485 %	As remainder
Manganese, Mn	<= 2.0 %
Molybdenum, Mo	<= 0.30 %
Nickel, Ni	20.5 %
Niobium, Nb (Columbium, Cb)	<= 0.25 %
Silicon, Si	<= 0.30 %

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NINDUST38 / 17576

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