Industeel URANUS® B25 6 Mo Cost Saving Super-Austenitic Stainless Steel with PREN = 42

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Industeel URANUS® B25 6 Mo Cost Saving Super-Austenitic Stainless Steel with PREN = 42
Categories:	Metal; Ferrous Metal; Austenitic; Stainless Steel; T S30000 Series Stainless Steel
Material Notes:	Description: URANUS® B25 (UR B25) is a 18% Ni, 20% Cr, 6% Mo superaustenitic stainless steel grade with 0.2 % nitrogen additions, particularly designed to be cost effective. The 18% nickel and 0.7% copper additions combined with the chromium and molybdenum additions improve the behavior of the steel in many corrosive solutions encountered for example in chemical and petrochemical processes or chloride containing solutions. The alloy is also seawater resistant and has extensively been used in offshore industries (It has not to be used in stagnant seawater application with temperatures higher than 30° 86°F). Thanks to the 18% Nickel and the 0.2 Nitrogen additions, the microstructure is austenitic. Information provided by manufacturer.
Key Words:	EURONORM X1 Cr Ni Mo Cu N 20.18.7, AFNOR Z2 CNDU 20.18.7 Az, DIN W.Nr 1.4547, ASTM UNS S31254
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Physical Properties	Original Value	Comments

Density	8.00 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Vickers	190 - 230	Typical, V₁₀
Tensile Strength, Ultimate	>= 650 MPa	Minimum Guaranteed
Tensile Strength, Yield	>= 300 MPa @Strain 0.2 %
	>= 330 MPa @Strain 1 %
Elongation at Break	>= 35 %
Modulus of Elasticity	195 GPa
Poissons Ratio	0.30	Calculated
Shear Modulus	75.0 GPa @Temperature 20.0 °C
Charpy Impact	>= 60.0 J @Temperature -196 °C

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000900 ohm-cm @Temperature 20.0 °C

Thermal Properties	Original Value	Comments
CTE, linear	16.5 µm/m-°C @Temperature 20.0 - 100 °C
	17.0 µm/m-°C @Temperature 20.0 - 300 °C
	17.3 µm/m-°C @Temperature 20.0 - 500 °C
Specific Heat Capacity	0.480 J/g-°C @Temperature 20.0 °C
Thermal Conductivity	13.0 W/m-K @Temperature 20.0 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.010 %
Chromium, Cr	20 %
Copper, Cu	0.70 %
Iron, Fe	54.989 %	As remainder
Molybdenum, Mo	6.1 %
Nickel, Ni	18 %
Nitrogen, N	0.20 %
Sulfur, S	0.0010 %

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NINDUST42 / 17580

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