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Rulon Bearings

AISI 8650 Steel, oil quenched 800°C (1470°F), 650°C (1200°F) temper, 100 mm (4 in.) round
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes: Post oil quenched hardness 42 HRC surface, 39 HRC half-radius, 38 HRC center
Key Words: UNS G86500, ASTM A322, ASTM A505, ASTM A519, SAE J404, SAE J412, SAE J770
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Physical PropertiesMetricEnglishComments
Density 7.85 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 241241
Hardness, Knoop 265265Converted from Brinell
Hardness, Rockwell B 9797Converted from Brinell
Hardness, Rockwell C 2222Converted from Brinell
Hardness, Vickers 254254Converted from Brinell
Tensile Strength, Ultimate 841 MPa122000 psi
Tensile Strength, Yield 650 MPa94300 psi
Elongation at Break 22.5 %22.5 %in 50 mm
Modulus of Elasticity 205 GPa29700 ksiTypical for steel
Bulk Modulus 160 GPa23200 ksiTypical for steel.
Poissons Ratio 0.290.29Calculated
Machinability 60 %60 %annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus 80.0 GPa11600 ksiTypical for steel.
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000234 ohm-cm0.0000234 ohm-cmTypical steel
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.475 J/g-°C0.114 BTU/lb-°FTypical steel
Thermal Conductivity 46.6 W/m-K323 BTU-in/hr-ft²-°FTypical steel
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.48 - 0.53 %0.48 - 0.53 %
Chromium, Cr 0.40 - 0.60 %0.40 - 0.60 %
Iron, Fe 96.54 - 97.67 %96.54 - 97.67 %As remainder
Manganese, Mn 0.75 - 1.0 %0.75 - 1.0 %
Molybdenum, Mo 0.15 - 0.25 %0.15 - 0.25 %
Nickel, Ni 0.40 - 0.70 %0.40 - 0.70 %
Phosphorus, P <= 0.035 %<= 0.035 %
Silicon, Si 0.15 - 0.30 %0.15 - 0.30 %
Sulfur, S <= 0.045 %<= 0.045 %

References for this datasheet.

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