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Elmet Technologies

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Latrobe LSS™ 440C Stainless Steel Knife (ASTM A276)
Categories: Metal; Ferrous Metal; Martensitic; Stainless Steel

Material Notes: TLS 440C Stainless Knife Steel is a high-carbon martensitic stainless steel which exhibits an attainable hardness of approximately 60 HRC. The high carbon content results in a hard matrix and numerous chromium carbides in the microstructure, which in turn provide excellent wear resistance and retention of cutting edges. TLS 440C stainless knife steel should be considered for applications such as specialty knives, industrial knives, scissors, surgical knives, and other applications which require a combination of corrosion resistance, wear resistance, or edge retention.

Information Provided by Timken Latrobe Steel.

Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.

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 PropertiesOriginal ValueComments
Specific Gravity 7.62 g/cc
Density 0.275 lb/in³
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell C 57.5Oil Quenched from 1066°C, 30 minutes
 57.5Air Quenched from 1066°C, 30 minutes
 59Air Quenched from 1010°C, 30 minutes
 60Oil Quenched from 1010°C, 30 minutes
 61Air Quenched from 1038°C, 30 minutes
 62Oil Quenched from 1038°C, 30 minutes
Modulus of Elasticity 29000 ksi
Machinability 30 - 40 %1% Carbon Steel
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 0.000060 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 10.0 µm/m-°C
@Temperature 20.0 - 200 °C
 11.2 µm/m-°C
@Temperature 20.0 - 600 °C
Specific Heat Capacity 0.110 BTU/lb-°F
Thermal Conductivity 24.2 W/m-K
@Temperature 100 °C
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 1.05 %
Chromium, Cr 17 %
Iron, Fe 81.15 %
Manganese, Mn 0.40 %
Molybdenum, Mo 0.40 %
Silicon, Si 0.40 %

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NTIMK134 / 19481

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