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Ensinger PEI

Crucible Steel LABELLE® Silicon #2 Tool Steel
Categories: Metal; Ferrous Metal; Tool Steel; Shock-Resisting Steel
Material Notes: LaBelle Silicon #2 is a shock resisting tool steel capable of maximum toughness at relatively high hardness. It has excellent resistance to impact and battering, with good edge retention.

Information provided by Crucible Industries
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Physical PropertiesMetricEnglishComments
Density 7.75 g/cc0.280 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 187 - 235187 - 235
Hardness, Rockwell C 60 - 6160 - 61oil quenched from 1650°F
 64 - 6564 - 65water quenched from 1600°F
 44 - 45
@Tempering Temp. 538 °C		44 - 45
@Tempering Temp. 1000 °F		hardened at 1650°F then tempered
 47 - 48
@Tempering Temp. 482 °C		47 - 48
@Tempering Temp. 900 °F		hardened at 1650°F then tempered
 51 - 52
@Tempering Temp. 427 °C		51 - 52
@Tempering Temp. 800 °F		hardened at 1650°F then tempered
 56 - 57
@Tempering Temp. 371 °C		56 - 57
@Tempering Temp. 700 °F		hardened at 1650°F then tempered
 57 - 58
@Tempering Temp. 316 °C		57 - 58
@Tempering Temp. 600 °F		hardened at 1650°F then tempered
 58 - 59
@Tempering Temp. 260 °C		58 - 59
@Tempering Temp. 500 °F		hardened at 1650°F then tempered
 58 - 60
@Tempering Temp. 204 °C		58 - 60
@Tempering Temp. 400 °F		hardened at 1650°F then tempered
 60 - 61
@Tempering Temp. 149 °C		60 - 61
@Tempering Temp. 300 °F		hardened at 1650°F then tempered
Modulus of Elasticity 207 GPa30000 ksi
Charpy Impact  66.4 J
@Tempering Temp. 149 °C		49.0 ft-lb
@Tempering Temp. 300 °F		hardened at 1650°F then tempered; C-notch
 187 J
@Tempering Temp. 204 °C		138 ft-lb
@Tempering Temp. 400 °F		hardened at 1650°F then tempered; C-notch
 193 J
@Tempering Temp. 316 °C		142 ft-lb
@Tempering Temp. 600 °F		hardened at 1650°F then tempered; C-notch
 198 J
@Tempering Temp. 260 °C		146 ft-lb
@Tempering Temp. 500 °F		hardened at 1650°F then tempered; C-notch
 212 J
@Tempering Temp. 371 °C		156 ft-lb
@Tempering Temp. 700 °F		hardened at 1650°F then tempered; C-notch
 
Thermal PropertiesMetricEnglishComments
CTE, linear  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 - 538 °C		7.40 µin/in-°F
@Temperature 70.0 - 1000 °F
 13.7 µm/m-°C
@Temperature 21.1 - 649 °C		7.60 µin/in-°F
@Temperature 70.0 - 1200 °F
Thermal Conductivity 33.0 W/m-K
@Temperature 95.0 °C		229 BTU-in/hr-ft²-°F
@Temperature 203 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 766 °C1410 °FCritical Thermal Treatment Temperature
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.60 %0.60 %
Chromium, Cr 0.25 %0.25 %
Iron, Fe 95.9 %95.9 %as balance
Manganese, Mn 0.85 %0.85 %
Molybdenum, Mo 0.30 %0.30 %
Silicon, Si 1.9 %1.9 %
Vanadium, V 0.20 %0.20 %

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