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Rulon Bearings

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AISI Type O7 Tool Steel
Categories: Metal; Ferrous Metal; Tool Steel; Cold Work Steel; Oil-Hardening Steel

Material Notes: General purpose, oil-hardening, nondeforming alloy tool steel suitable for applications where extreme dimensional accuracy is required. Applications include punches, dies, and knives where a keen cutting edge is required.

Key Words: AISI Oil-Hardening Tool Steel O7, UNS T31507, ASTM A681, FED QQ-T-570, oil-hardening, non-deforming alloy tool steel suitable, dimensional accuracy, wear resistant
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Physical PropertiesOriginal ValueComments
Density 7.80 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell C 58 - 64
Bulk Modulus 160 GPaTypical for steels.
Machinability 85 %Based on 1% carbon water-hardening tool steel.
Shear Modulus 80.0 GPaTypical for steels.
 
Thermal PropertiesOriginal ValueComments
CTE, linear 11.2 µm/m-°C
 
Processing PropertiesOriginal ValueComments
Processing Temperature 175 - 290 °CTempering Temperature
 790 - 885 °CHardening Temperature
Annealing Temperature 790 - 815 °C
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 1.1 - 1.3 %
Chromium, Cr 0.60 %
Iron, Fe 94 %As Balance
Manganese, Mn <= 1.0 %
Molybdenum, Mo <= 0.30 %
Phosphorus, P <= 0.030 %
Silicon, Si <= 0.60 %
Sulfur, S <= 0.030 %
Tungsten, W 1.5 %
Vanadium, V <= 0.40 %

References for this datasheet.

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