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Ensinger PEI

AISI Type S1 Tool Steel, quenched 955°C (1750°F), tempered 150°C (300°F)
Categories: Metal; Ferrous Metal; Alloy Steel; Medium Alloy Steel; Tool Steel; Shock-Resisting Steel

Material Notes: Chromium-tungsten tool steel that provides excellent service in both hot and cold work shock applications. Has good wear resistance and high hardness value.

Key Words: UNS T41901
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Physical PropertiesMetricEnglishComments
Density 7.83 g/cc0.283 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Knoop 682682Converted from Rockwell C Hardness.
Hardness, Rockwell C 5858
Hardness, Vickers 661661Converted from Rockwell C Hardness.
Tensile Strength, Ultimate 2310 MPa335000 psi
Tensile Strength, Yield 1750 MPa254000 psi
Elongation at Break 9.0 %9.0 %
Bulk Modulus 160 GPa23200 ksiTypical for steel
Shear Modulus 80.0 GPa11600 ksiTypical for steel
 
Thermal PropertiesMetricEnglishComments
CTE, linear 12.4 µm/m-°C6.89 µin/in-°F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 205 - 650 °C401 - 1200 °FTempering Temperature
 900 - 955 °C1650 - 1750 °FHardening Temperature
Annealing Temperature 790 - 815 °C1450 - 1500 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.40 - 0.55 %0.40 - 0.55 %
Chromium, Cr 1.4 %1.4 %
Iron, Fe 94 %94 %As Balance
Manganese, Mn 0.25 %0.25 %
Molybdenum, Mo <= 0.50 %<= 0.50 %
Phosphorus, P <= 0.030 %<= 0.030 %
Silicon, Si 0.68 %0.68 %
Sulfur, S <= 0.030 %<= 0.030 %
Tungsten, W 2.25 %2.25 %
Vanadium, V 0.23 %0.23 %

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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AISI Type S5 Tool Steel, austenitized 855-870°C (1575-1600°F), oil quenched to 55 HRC
AISI Type S6 Shock Resisting Tool Steel (UNS T41906)
AISI Type S5 Tool Steel, austenitized 855-870°C (1575-1600°F), oil quenched to 35 HRC

MSTS1A / 14086

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