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Ensinger PEI

AISI Type S7 Tool Steel (UNS T41907)
Categories: Metal; Ferrous Metal; Tool Steel; Shock-Resisting Steel

Material Notes: Shock resisting steel

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Physical PropertiesMetricEnglishComments
Density 7.76 g/cc0.280 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 187 - 223187 - 223Annealed
Hardness, Rockwell C 45 - 5745 - 57After typical heat treatment
 
Thermal PropertiesMetricEnglishComments
CTE, linear  12.6 µm/m-°C
@Temperature 20.0 - 200 °C
7.00 µin/in-°F
@Temperature 68.0 - 392 °F
 13.3 µm/m-°C
@Temperature 20.0 - 650 °C
7.39 µin/in-°F
@Temperature 68.0 - 1200 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 205 - 620 °C401 - 1150 °FTempering
 925 - 955 °C1700 - 1750 °FHardening
Annealing Temperature 815 - 845 °C1500 - 1550 °FMax cooling rate = 14°C/hr
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.45 - 0.55 %0.45 - 0.55 %
Chromium, Cr 3.0 - 3.5 %3.0 - 3.5 %
Iron, Fe 92 - 94.9 %92 - 94.9 %As remainder
Manganese, Mn 0.20 - 0.90 %0.20 - 0.90 %
Molybdenum, Mo 1.3 - 1.8 %1.3 - 1.8 %
Silicon, Si 0.20 - 1.0 %0.20 - 1.0 %
Vanadium, V 0.20 - 0.30 %0.20 - 0.30 %Optional

References for this datasheet.

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