JIS SK5 Water Hardening Tool Steel

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JIS SK5 Water Hardening Tool Steel
Categories:	Metal; Ferrous Metal; Tool Steel; Water-Hardening Steel
Material Notes:	JIS tool steels SK3M, SK5M, SK6M, SK7M, SK1, SK2, SK3, SK4, SK5, SK6, and SK7 differ only in carbon specification; SKC3 includes a vanadium max spec.
Key Words:	JIS G4401(83) SK5. Comparable to SK3M, SK5M, SK6M, SK7M, SK1, SK2, SK3, SK4, SK6, SK7, SKC3, AISI W1 Tool Steel, UNS T72301
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Physical Properties	Original Value	Comments

Density	7.83 g/cc	(AISI W1)

Mechanical Properties	Original Value	Comments
Hardness, Brinell	<= 207
Modulus of Elasticity	205 GPa	(AISI W1)
Poissons Ratio	0.28	(AISI W1)
Shear Modulus	80.0 GPa	(AISI W1)

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000300 ohm-cm	(AISI W1)

Thermal Properties	Original Value	Comments
CTE, linear	10.4 µm/m-°C @Temperature 20.0 - 100 °C	(AISI W1)
	12.2 µm/m-°C @Temperature 0.000 - 300 °C	(AISI W1)
	13.8 µm/m-°C @Temperature 0.000 - 500 °C	(AISI W1)
Specific Heat Capacity	0.461 J/g-°C @Temperature 0.000 - 100 °C	(AISI W1)
Thermal Conductivity	48.0 W/m-K	(AISI W1)

Processing Properties	Original Value	Comments
Processing Temperature	175 - 345 °C	Tempering Temperature (AISI W1)
	760 - 845 °C	Hardening Temperature (AISI W1)
Annealing Temperature	740 - 790 °C	(AISI W1)

Component Elements Properties	Original Value	Comments
Carbon, C	0.80 - 0.90 %
Chromium, Cr	<= 0.30 %
Copper, Cu	<= 0.25 %
Iron, Fe	97.3 - 99.2 %	As Balance
Manganese, Mn	<= 0.50 %
Nickel, Ni	<= 0.25 %
Phosphorus, P	<= 0.030 %
Silicon, Si	<= 0.35 %
Sulfur, S	<= 0.030 %

References for this datasheet.

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MSTZJSK5 / 231123

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