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Rulon Bearings

Sandvik 2R68/2R68HV Seamless tube and pipe
Categories: Metal; Ferrous Metal; Austenitic; Stainless Steel
Material Notes: Sandvik 2R68 is a molybdenum alloyed austenitic chromium-nickel steel. It is characterized by low contents of manganese, sulphur, carbon and nitrogen. This results in a very clean steel with a low content of non-metallic inclusions. The grade is especially developed for a application where very high demands are set upon allowed limits of contamination from the stainless steel material. Typical examples are applications found within the semiconductor and pharmaceutical industries.

The steel is available in two forms: Sandvik 2R68, produced by conventional AOD technique, and Sandvik 2R68HV, further optimized by vacuum arc remelting (VAR) of the AOD material. The VAR treatment reduces the content of oxide inclusions, thereby obtaining further cleanliness. Otherwise the two grades generally have similar properties.

Electropolishing of the grade produces very even and smooth surfaces, thanks to the very low levels of impurities. The tubes are used in the electropolished condition for high purity gas distribution systems.

Information provided by Sandvik

ASTM 316L; EN 1.4435
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Physical PropertiesMetricEnglishComments
Density 8.00 g/cc0.289 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 155155
Tensile Strength, Ultimate 490 - 690 MPa71100 - 100000 psi
Tensile Strength, Yield  >= 190 MPa
@Strain 0.2 %		>= 27600 psi
@Strain 0.2 %
 >= 225 MPa
@Strain 1 %		>= 32600 psi
@Strain 1 %
 >= 100 MPa
@Strain 0.2 %,
Temperature 500 °C		>= 14500 psi
@Strain 0.2 %,
Temperature 932 °F
 >= 118 MPa
@Strain 0.2 %,
Temperature 300 °C		>= 17100 psi
@Strain 0.2 %,
Temperature 572 °F
 >= 128 MPa
@Strain 1 %,
Temperature 500 °C		>= 18600 psi
@Strain 1 %,
Temperature 932 °F
 >= 145 MPa
@Strain 1 %,
Temperature 300 °C		>= 21000 psi
@Strain 1 %,
Temperature 572 °F
Elongation at Break >= 40 %>= 40 %
 >= 35 %
@Thickness 50.8 mm		>= 35 %
@Thickness 2.00 in
Modulus of Elasticity 200 GPa29000 ksi
 165 GPa
@Temperature 500 °C		23900 ksi
@Temperature 932 °F
 179 GPa
@Temperature 300 °C		26000 ksi
@Temperature 572 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear  17.0 µm/m-°C
@Temperature 30.0 - 100 °C		9.44 µin/in-°F
@Temperature 86.0 - 212 °F
 17.0 µm/m-°C
@Temperature 30.0 - 200 °C		9.44 µin/in-°F
@Temperature 86.0 - 392 °F
 21.0 µm/m-°C
@Temperature 30.0 - 500 °C		11.7 µin/in-°F
@Temperature 86.0 - 932 °F
Specific Heat Capacity  0.485 J/g-°C
@Temperature 20.0 °C		0.116 BTU/lb-°F
@Temperature 68.0 °F
 0.515 J/g-°C
@Temperature 200 °C		0.123 BTU/lb-°F
@Temperature 392 °F
 0.540 J/g-°C
@Temperature 400 °C		0.129 BTU/lb-°F
@Temperature 752 °F
 0.575 J/g-°C
@Temperature 600 °C		0.137 BTU/lb-°F
@Temperature 1110 °F
Thermal Conductivity  14.0 W/m-K
@Temperature 20.0 °C		97.2 BTU-in/hr-ft²-°F
@Temperature 68.0 °F
 17.0 W/m-K
@Temperature 200 °C		118 BTU-in/hr-ft²-°F
@Temperature 392 °F
 20.0 W/m-K
@Temperature 400 °C		139 BTU-in/hr-ft²-°F
@Temperature 752 °F
 23.0 W/m-K
@Temperature 600 °C		160 BTU-in/hr-ft²-°F
@Temperature 1110 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.020 %<= 0.020 %
Chromium, Cr 17.5 %17.5 %
Iron, Fe 63.9 %63.9 %As Balance
Manganese, Mn <= 0.40 %<= 0.40 %
Molybdenum, Mo 2.6 %2.6 %
Nickel, Ni 14.5 %14.5 %
Phosphorus, P <= 0.030 %<= 0.030 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.0030 %<= 0.0030 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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