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Rulon Bearings

JIS SKD7 Hot Work Tool Steel
Categories: Metal; Ferrous Metal; Tool Steel; Hot Work Steel

Key Words: JIS G4404(83) SKD7, SKD-7, SKD 7; Comparable to AISI H10 Tool Steel, UNS T20810
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Physical PropertiesMetricEnglishComments
Density 7.81 g/cc0.282 lb/in³(H10)
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell <= 229<= 229Hot Rolled Bar Die Forging Annealed
 
Thermal PropertiesMetricEnglishComments
CTE, linear  12.2 µm/m-°C
@Temperature 20.0 - 425 °C
6.78 µin/in-°F
@Temperature 68.0 - 797 °F
(H10)
 13.3 µm/m-°C
@Temperature 20.0 - 540 °C
7.39 µin/in-°F
@Temperature 68.0 - 1000 °F
(H10)
 13.7 µm/m-°C
@Temperature 20.0 - 650 °C
7.61 µin/in-°F
@Temperature 68.0 - 1200 °F
(H10)
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.28 - 0.37 %0.28 - 0.37 %
Chromium, Cr 2.5 - 3.5 %2.5 - 3.5 %
Copper, Cu <= 0.25 %<= 0.25 %
Iron, Fe 89.9 - 93.9 %89.9 - 93.9 %As Balance
Manganese, Mn 0.25 - 0.70 %0.25 - 0.70 %
Molybdenum, Mo 2.0 - 3.0 %2.0 - 3.0 %
Nickel, Ni <= 0.30 %<= 0.30 %
Phosphorus, P <= 0.030 %<= 0.030 %
Silicon, Si 0.80 - 1.2 %0.80 - 1.2 %
Sulfur, S <= 0.030 %<= 0.030 %
Vanadium, V 0.25 - 0.75 %0.25 - 0.75 %

References for this datasheet.

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