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Rulon Bearings

Crucible Steel HALCOMB® 218 Tool Steel, AISI H11
Categories: Metal; Ferrous Metal; Tool Steel; Hot Work Steel
Material Notes: Halcomb 218 is a general purpose hot work tool steel, combining good toughness with moderate high-temperature strength and heat check resistance. Because of its high toughness, it is particularly suited for applications where drastic coolants are used, or where gross cracking resistance is a concern.

Information provided by Crucible Industries
Key Words: AISI H11
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 7.75 g/cc0.280 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 192 - 235192 - 235
Hardness, Rockwell C  26 - 28
@Tempering Temp. 649 °C		26 - 28
@Tempering Temp. 1200 °F		air cooled from 1850°F then tempered
 34 - 36
@Tempering Temp. 621 °C		34 - 36
@Tempering Temp. 1150 °F		air cooled from 1850°F then tempered
 40 - 43
@Tempering Temp. 593 °C		40 - 43
@Tempering Temp. 1100 °F		air cooled from 1850°F then tempered
 46 - 48
@Tempering Temp. 566 °C		46 - 48
@Tempering Temp. 1050 °F		air cooled from 1850°F then tempered
 52 - 54
@Tempering Temp. 538 °C		52 - 54
@Tempering Temp. 1000 °F		air cooled from 1850°F then tempered
Modulus of Elasticity 207 GPa30000 ksi
Charpy Impact  17.6 J
@Tempering Temp. 538 °C		13.0 ft-lb
@Tempering Temp. 1000 °F		air cooled from 1850°F then tempered; V-notch
 24.4 J
@Tempering Temp. 566 °C		18.0 ft-lb
@Tempering Temp. 1050 °F		air cooled from 1850°F then tempered; V-notch
 31.2 J
@Tempering Temp. 593 °C		23.0 ft-lb
@Tempering Temp. 1100 °F		air cooled from 1850°F then tempered; V-notch
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.4 µm/m-°C
@Temperature 21.1 - 93.3 °C		5.80 µin/in-°F
@Temperature 70.0 - 200 °F
 11.3 µm/m-°C
@Temperature 21.1 - 204 °C		6.30 µin/in-°F
@Temperature 70.0 - 400 °F
 12.4 µm/m-°C
@Temperature 21.1 - 427 °C		6.90 µin/in-°F
@Temperature 70.0 - 800 °F
 12.8 µm/m-°C
@Temperature 21.1 - 538 °C		7.10 µin/in-°F
@Temperature 70.0 - 1000 °F
 13.1 µm/m-°C
@Temperature 21.1 - 649 °C		7.30 µin/in-°F
@Temperature 70.0 - 1200 °F
Thermal Conductivity  25.9 W/m-K
@Temperature 93.3 °C		180 BTU-in/hr-ft²-°F
@Temperature 200 °F
 27.7 W/m-K
@Temperature 316 °C		192 BTU-in/hr-ft²-°F
@Temperature 600 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 818.3 °C1505 °FCritical Thermal Treatment Temperature
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.40 %0.40 %
Chromium, Cr 5.0 %5.0 %
Iron, Fe 91.6 %91.6 %as balance
Manganese, Mn 0.30 %0.30 %
Molybdenum, Mo 1.3 %1.3 %
Silicon, Si 0.90 %0.90 %
Vanadium, V 0.50 %0.50 %

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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