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Rulon Bearings

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Ovako 20MnCrNiMo4-2-2* 152E Steel
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel

Material Notes: 20MnCrNiMo4-2-2* or 8720 as it is also named in US standards, is a case hardening steel used in forgings to eg rock drilling tools.

Information provided by Ovako

Key Words: AISI 8720
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Physical PropertiesOriginal ValueComments
Density 7.80 g/cc
 
Mechanical PropertiesOriginal ValueComments
Modulus of Elasticity 210 GPa
Poissons Ratio 0.30
Shear Modulus 80.0 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000200 - 0.00000250 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 12.0 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.460 - 0.480 J/g-°C
@Temperature 50.0 - 100 °C
Thermal Conductivity 40.0 - 45.0 W/m-KAmbient temperature
Transformation Temperature 397 °CMS
 725 °CAC1
 828 °CAC3
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 0.20 - 0.22 %
Chromium, Cr 0.50 - 0.65 %
Copper, Cu 0.00 - 0.25 %
Iron, Fe 96.7 - 97.57 %As Balance
Manganese, Mn 0.80 - 0.90 %
Molybdenum, Mo 0.23 - 0.30 %
Nickel, Ni 0.50 - 0.65 %
Phosphorus, P 0.00 - 0.020 %
Silicon, Si 0.20 - 0.30 %
Sulfur, S 0.00 - 0.010 %

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NOVAKO137 / 234436

Master Bond adhesives

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