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Rulon Bearings

AISI Type W2 Tool Steel, water quenched at 775°C (1425°F), and tempered
Categories: Metal; Ferrous Metal; Carbon Steel; High Carbon Steel; Tool Steel; Water-Hardening Steel
Material Notes: Among the least expensive of tool steels. Must be water quenched for necessary hardness, except for very small parts, used for a variety of tools, but limitations must be recognized. Discussion of application with producer is highly recommended.
Key Words: UNS T72302
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Physical PropertiesMetricEnglishComments
Density 7.83 g/cc0.283 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Ultimate 1800 MPa261000 psi
Tensile Strength, Yield 1625 MPa235700 psi
Elongation at Break 7.0 %7.0 %
Modulus of Elasticity 205 GPa29700 ksi
Bulk Modulus 160 GPa23200 ksiTypical for steels.
Poissons Ratio 0.280.28Calculated
Machinability 40 %40 %Based on AISI 1212 steel = 100%
Shear Modulus 80.0 GPa11600 ksiTypical for steels.
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000300 ohm-cm0.0000300 ohm-cmat 20ºC
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.4 µm/m-°C
@Temperature 20.0 - 100 °C		5.78 µin/in-°F
@Temperature 68.0 - 212 °F
 12.2 µm/m-°C
@Temperature 0.000 - 300 °C		6.78 µin/in-°F
@Temperature 32.0 - 572 °F
 13.8 µm/m-°C
@Temperature 0.000 - 500 °C		7.67 µin/in-°F
@Temperature 32.0 - 932 °F
Specific Heat Capacity 0.461 J/g-°C
@Temperature 0.000 - 100 °C		0.110 BTU/lb-°F
@Temperature 32.0 - 212 °F
Thermal Conductivity 48.0 W/m-K333 BTU-in/hr-ft²-°F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 175 - 345 °C347 - 653 °FTempering Temperature
 760 - 845 °C1400 - 1550 °FHardening Temperature
Annealing Temperature 740 - 790 °C1360 - 1450 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.60 - 1.4 %0.60 - 1.4 %usually 0.90% to 1.10%
Chromium, Cr <= 0.15 %<= 0.15 %
Iron, Fe 97.2 - 99.1 %97.2 - 99.1 %As Remainder
Manganese, Mn 0.10 - 0.40 %0.10 - 0.40 %
Phosphorus, P <= 0.030 %<= 0.030 %
Silicon, Si 0.10 - 0.40 %0.10 - 0.40 %
Sulfur, S <= 0.030 %<= 0.030 %
Vanadium, V 0.15 - 0.35 %0.15 - 0.35 %

References for this datasheet.

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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