AISI Type W2 Tool Steel, water quenched at 775°C (1425°F), and tempered

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AISI Type W2 Tool Steel, water quenched at 775°C (1425°F), and tempered
Categories:	Metal; Ferrous Metal; Carbon Steel; High Carbon Steel; Tool Steel; Water-Hardening Steel
Material Notes:	Among the least expensive of tool steels. Must be water quenched for necessary hardness, except for very small parts, used for a variety of tools, but limitations must be recognized. Discussion of application with producer is highly recommended.
Key Words:	UNS T72302
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Physical Properties	Original Value	Comments

Density	7.83 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	1800 MPa
Tensile Strength, Yield	1625 MPa
Elongation at Break	7.0 %
Modulus of Elasticity	205 GPa
Bulk Modulus	160 GPa	Typical for steels.
Poissons Ratio	0.28	Calculated
Machinability	40 %	Based on AISI 1212 steel = 100%
Shear Modulus	80.0 GPa	Typical for steels.

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000300 ohm-cm	at 20ºC

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

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

Component Elements Properties	Original Value	Comments
Carbon, C	0.60 - 1.4 %	usually 0.90% to 1.10%
Chromium, Cr	<= 0.15 %
Iron, Fe	97.2 - 99.1 %	As Remainder
Manganese, Mn	0.10 - 0.40 %
Phosphorus, P	<= 0.030 %
Silicon, Si	0.10 - 0.40 %
Sulfur, S	<= 0.030 %
Vanadium, V	0.15 - 0.35 %

References for this datasheet.

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MSTW2A / 14109

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