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AISI Type S1 Tool Steel, quenched 955°C (1750°F), tempered 250°C (500°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 PropertiesOriginal ValueComments
Density 7.83 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Knoop 605Converted from Rockwell C Hardness.
Hardness, Rockwell C 54
Hardness, Vickers 584Converted from Rockwell C Hardness.
Tensile Strength, Ultimate 2080 MPa
Tensile Strength, Yield 1800 MPa
Elongation at Break 10 %
Bulk Modulus 160 GPaTypical for steel
Shear Modulus 80.0 GPaTypical for steel
 
Thermal PropertiesOriginal ValueComments
CTE, linear 12.4 µm/m-°C
 
Processing PropertiesOriginal ValueComments
Processing Temperature 205 - 650 °CTempering Temperature
 900 - 955 °CHardening Temperature
Annealing Temperature 790 - 815 °C
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 0.40 - 0.55 %
Chromium, Cr 1.4 %
Iron, Fe 94 %As Balance
Manganese, Mn 0.25 %
Molybdenum, Mo <= 0.50 %
Phosphorus, P <= 0.030 %
Silicon, Si 0.68 %
Sulfur, S <= 0.030 %
Tungsten, W 2.25 %
Vanadium, V 0.23 %

References for this datasheet.

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AISI Type S2 Tool Steel, austenitized 845°C (1550°F), brine quenched to 15 HRC

MSTS1B / 14087

Specialty Compounds RTP Company

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