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Master Bond adhesives

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440C Martensitic Stainless Steel (UNS S44004)
Categories: Metal; Ferrous Metal; Martensitic; Stainless Steel; T 400 Series Stainless Steel

Material Notes: Fe-17Cr-1Mn-1Si-0.75Mo-1.1C

Typically used for molds, bearings, turbine components, aircraft structural parts, medical instruments, and cutlery

Key Words: UNS S44004
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Physical PropertiesOriginal ValueComments
Density 7.80 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell B 97
Hardness, Rockwell C 50
@Temperature 416 °C
 52
@Temperature 316 °C
 56
@Temperature 204 °C
 60.5
@Temperature 93.3 °C
 63
@Temperature -17.8 °C
Hardness, Vickers 510
@Temperature 416 °C
 555
@Temperature 316 °C
 630
@Temperature 204 °C
 710
@Temperature 93.3 °C
 760
@Temperature -17.8 °C
Tensile Strength, Ultimate 760 - 1970 MPa
Tensile Strength, Yield 450 - 1900 MPa
@Strain 0.2 %
Elongation at Break 2.0 - 14 %
Modulus of Elasticity 204 - 215 GPa
Bulk Modulus 166 GPa
Poissons Ratio 0.283
Fracture Toughness 16.0 - 22.0 ksi-in½cracks originating in case; case depth 0.30 to 0.35 in.
Shear Modulus 83.9 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000600 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 10.2 µm/m-°C
Specific Heat Capacity 0.460 J/g-°C
Thermal Conductivity 24.2 W/m-K
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 1.1 %
Chromium, Cr 17 %
Iron, Fe 79.15 %As Balance
Manganese, Mn 1.0 %
Molybdenum, Mo 0.75 %
Silicon, Si 1.0 %

References for this datasheet.

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MQ440C / 100243

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