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Crucible Steel CHRO-MOW® Tool Steel, AISI H12
Categories: Metal; Ferrous Metal; Tool Steel; Hot Work Steel
Material Notes: Chro-Mow is a general purpose hot work tool steel, combining good high-temperature strength with moderate toughness and heat check resistance. It is suited for applications where drastic coolants are used. It may be used up to tool temperatures of about 1000F, with brief exposures up to about 1100F.

Information provided by Crucible Industries
Key Words: AISI H12
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 7.78 g/cc0.281 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 192 - 235192 - 235
Hardness, Rockwell C  30 - 32
@Tempering Temp. 621 °C		30 - 32
@Tempering Temp. 1150 °F		air cooled from 1850°F then tempered
 40 - 42
@Tempering Temp. 593 °C		40 - 42
@Tempering Temp. 1100 °F		air cooled from 1850°F then tempered
 44 - 46
@Tempering Temp. 566 °C		44 - 46
@Tempering Temp. 1050 °F		air cooled from 1850°F then tempered
 51 - 53
@Tempering Temp. 538 °C		51 - 53
@Tempering Temp. 1000 °F		air cooled from 1850°F then tempered
Modulus of Elasticity 207 GPa30000 ksi
Charpy Impact  10.8 J
@Tempering Temp. 538 °C		8.00 ft-lb
@Tempering Temp. 1000 °F		air cooled from 1850°F then tempered; V-notch
 14.9 J
@Tempering Temp. 566 °C		11.0 ft-lb
@Tempering Temp. 1050 °F		air cooled from 1850°F then tempered; V-notch
 17.6 J
@Tempering Temp. 593 °C		13.0 ft-lb
@Tempering Temp. 1100 °F		air cooled from 1850°F then tempered; V-notch
 
Thermal PropertiesMetricEnglishComments
CTE, linear  11.0 µm/m-°C
@Temperature 21.1 - 93.3 °C		6.10 µin/in-°F
@Temperature 70.0 - 200 °F
 11.7 µm/m-°C
@Temperature 21.1 - 204 °C		6.50 µin/in-°F
@Temperature 70.0 - 400 °F
 12.6 µm/m-°C
@Temperature 21.1 - 427 °C		7.00 µin/in-°F
@Temperature 70.0 - 800 °F
 13.3 µm/m-°C
@Temperature 21.1 - 649 °C		7.40 µin/in-°F
@Temperature 70.0 - 1200 °F
Thermal Conductivity  24.2 W/m-K
@Temperature 93.3 °C		168 BTU-in/hr-ft²-°F
@Temperature 200 °F
 25.9 W/m-K
@Temperature 316 °C		180 BTU-in/hr-ft²-°F
@Temperature 600 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 835.0 °C1535 °FCritical Thermal Treatment Temperature
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.35 %0.35 %
Chromium, Cr 5.0 %5.0 %
Iron, Fe 90.45 %90.45 %as balance
Manganese, Mn 0.35 %0.35 %
Molybdenum, Mo 1.3 %1.3 %
Silicon, Si 1.0 %1.0 %
Tungsten, W 1.2 %1.2 %
Vanadium, V 0.35 %0.35 %

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NCRUC935 / 160386

Specialty Compounds RTP Company




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