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Rulon Bearings

AISI Type O2 Oil-hardening Tool Steel, oil quenched at 800°C, tempered at 260°C
Categories: Metal; Ferrous Metal; Tool Steel; Cold Work Steel; Oil-Hardening Steel
Material Notes: Even intricate sections may be hardened, with good dimensional stability during hardening.
Key Words: UNS T31502, ASTM A681, FED QQ-T-570, SAE J437, SAE J438, DIN 1.2842, A
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Physical PropertiesMetricEnglishComments
Density 7.61 g/cc0.275 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Knoop 624624Converted from Rockwell C hardness.
Hardness, Rockwell C 5555
Hardness, Vickers 602602
Tensile Strength, Ultimate 1930 MPa280000 psi
Tensile Strength, Yield 1750 MPa254000 psi
Elongation at Break 0.00 %0.00 %in 50 mm
Bulk Modulus 160 GPa23200 ksiTypical for steel
Shear Modulus 80.0 GPa11600 ksiTypical for steel
Izod Impact Unnotched 105 J77.4 ft-lb
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.3 µm/m-°C
@Temperature 25.0 - 40.0 °C		5.72 µin/in-°F
@Temperature 77.0 - 104 °F
 13.0 µm/m-°C
@Temperature 25.0 - 260 °C		7.22 µin/in-°F
@Temperature 77.0 - 500 °F
 14.6 µm/m-°C
@Temperature 25.0 - 540 °C		8.11 µin/in-°F
@Temperature 77.0 - 1000 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 175 - 260 °C347 - 500 °FTempering Temperature
 760 - 800 °C1400 - 1470 °FHardening Temperature
Annealing Temperature 745 - 775 °C1370 - 1430 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.85 - 0.95 %0.85 - 0.95 %
Chromium, Cr <= 0.35 %<= 0.35 %
Iron, Fe 96 %96 %As Balance
Manganese, Mn 1.6 %1.6 %
Molybdenum, Mo <= 0.30 %<= 0.30 %
Phosphorus, P <= 0.030 %<= 0.030 %
Silicon, Si <= 0.50 %<= 0.50 %
Sulfur, S <= 0.030 %<= 0.030 %
Vanadium, V <= 0.30 %<= 0.30 %

References for this datasheet.

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