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Rulon Bearings

AISI 4820 Steel, annealed 815°C (1500°F)
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Key Words: SAE 770, low carbon steels, UNS G48200, ASTM A322, ASTM A331, ASTM A505, ASTM A519, ASTM A535, SAE J404, SAE J414,
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Physical PropertiesMetricEnglishComments
Density 7.85 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 197197
Hardness, Knoop 219219Converted from Brinell
Hardness, Rockwell B 9292Converted from Brinell
Hardness, Rockwell C 1313Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers 207207Converted from Brinell
Tensile Strength, Ultimate 685 MPa99400 psi
Tensile Strength, Yield 460 MPa66700 psi
Elongation at Break 22.3 %22.3 %in 50 mm.
Modulus of Elasticity 205 GPa29700 ksiTypical for steel
Bulk Modulus 160 GPa23200 ksiTypical for steel.
Poissons Ratio 0.290.29Calculated
Machinability 50 %50 %annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus 80.0 GPa11600 ksiTypical for steel
Izod Impact 94.0 J69.3 ft-lb
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000245 ohm-cm0.0000245 ohm-cmTypical 4000 series steel
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.475 J/g-°C0.114 BTU/lb-°FTypical 4000 series steel
Thermal Conductivity 44.5 W/m-K309 BTU-in/hr-ft²-°FTypical steel
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.18 - 0.23 %0.18 - 0.23 %
Iron, Fe 94.645 - 95.72 %94.645 - 95.72 %As remainder
Manganese, Mn 0.50 - 0.70 %0.50 - 0.70 %
Molybdenum, Mo 0.20 - 0.30 %0.20 - 0.30 %
Nickel, Ni 3.25 - 3.75 %3.25 - 3.75 %
Phosphorus, P <= 0.035 %<= 0.035 %
Silicon, Si 0.15 - 0.30 %0.15 - 0.30 %
Sulfur, S <= 0.040 %<= 0.040 %

References for this datasheet.

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