Bohler-Uddeholm BÖHLER W403 VMR® Hot Work Tool Steel

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Bohler-Uddeholm BÖHLER W403 VMR® Hot Work Tool Steel
Categories:	Metal; Ferrous Metal; Tool Steel; Hot Work Steel
Material Notes:	W403 VMR is a modified hot work alloy with an excellent combination of hot tensile properties and toughness. The balanced properties of this grade are not only due to chemistry modification, but to optimized production techniques including the use of Vacuum Arc Remelting, and improved diffusion annealing and structurally treatments. These changes have led to a high degree of cleanliness, of uniformity of cleanliness, toughness and dimensional stability. Use this grade where an improved version of W303 is required. Applications include highly stressed hot work tools, such as mandrels, dies and containers for metal tube and rod extrusion; hot extrusion tools; tools for the manufacture of hollows: tools for the manufacture of screws, nuts, rivets and bolts; forging dies and punches; die casting dies; forming dies; or hot shear blades.
Key Words:	EN/DIN 1.2367, X38CrMoV5-3
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Physical Properties	Original Value	Comments

Density	7.65 g/cc @Temperature 600 °C
	7.69 g/cc @Temperature 500 °C
	7.85 g/cc @Temperature 20.0 °C

Mechanical Properties	Original Value	Comments
Hardness, Brinell	<= 205	as delivered
Hardness, Rockwell C	55	hardened 1025°C then tempered 500°C
Modulus of Elasticity	165 GPa @Temperature 600 °C
	176 GPa @Temperature 500 °C
	215 GPa @Temperature 20.0 °C

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000500 ohm-cm @Temperature 20.0 °C
	0.0000860 ohm-cm @Temperature 500 °C
	0.0000960 ohm-cm @Temperature 600 °C

Thermal Properties	Original Value	Comments
CTE, linear	11.5 µm/m-°C @Temperature 20.0 - 100 °C
	12.0 µm/m-°C @Temperature 20.0 - 200 °C
	12.2 µm/m-°C @Temperature 20.0 - 300 °C
	12.5 µm/m-°C @Temperature 20.0 - 400 °C
	12.9 µm/m-°C @Temperature 20.0 - 500 °C
	13.0 µm/m-°C @Temperature 20.0 - 600 °C
	13.2 µm/m-°C @Temperature 20.0 - 700 °C
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C
	0.550 J/g-°C @Temperature 500 °C
	0.590 J/g-°C @Temperature 600 °C
Thermal Conductivity	28.4 W/m-K @Temperature 100 °C
	29.7 W/m-K @Temperature 200 °C
	29.7 W/m-K @Temperature 600 °C
	30.0 W/m-K @Temperature 700 °C
	30.0 W/m-K @Temperature 500 °C
	30.1 W/m-K @Temperature 400 °C
	30.2 W/m-K @Temperature 300 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.38 %
Chromium, Cr	5.0 %
Iron, Fe	90.7 %	As Balance
Manganese, Mn	0.25 %
Molybdenum, Mo	2.8 %
Silicon, Si	0.20 %
Vanadium, V	0.65 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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NBUCOR52 / 98131

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