Bohler-Uddeholm BÖHLER W403 VMR® Hot Work Tool Steel

Category	Metal , Ferrous Metal , Tool Steel , Hot Work Steel
Manufacturer	Bohler-Uddeholm
Trade Name	BÖHLER
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Bohler-Uddeholm BÖHLER W403 VMR® Hot Work Tool Steel.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

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.

Physical Properties	Metric	English
Density	7.65 g/cc @Temperature 600 °C	0.276 lb/in³ @Temperature 1110 °F
	7.69 g/cc @Temperature 500 °C	0.278 lb/in³ @Temperature 932 °F
	7.85 g/cc @Temperature 20.0 °C	0.284 lb/in³ @Temperature 68.0 °F

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	<= 205	<= 205	as delivered
Hardness, Rockwell C	55	55	hardened 1025°C then tempered 500°C
Modulus of Elasticity	165 GPa @Temperature 600 °C	23900 ksi @Temperature 1110 °F
	176 GPa @Temperature 500 °C	25500 ksi @Temperature 932 °F
	215 GPa @Temperature 20.0 °C	31200 ksi @Temperature 68.0 °F

Thermal Properties	Metric	English
CTE, linear	11.5 µm/m-°C @Temperature 20.0 - 100 °C	6.39 µin/in-°F @Temperature 68.0 - 212 °F
	12.0 µm/m-°C @Temperature 20.0 - 200 °C	6.67 µin/in-°F @Temperature 68.0 - 392 °F
	12.2 µm/m-°C @Temperature 20.0 - 300 °C	6.78 µin/in-°F @Temperature 68.0 - 572 °F
	12.5 µm/m-°C @Temperature 20.0 - 400 °C	6.94 µin/in-°F @Temperature 68.0 - 752 °F
	12.9 µm/m-°C @Temperature 20.0 - 500 °C	7.17 µin/in-°F @Temperature 68.0 - 932 °F
	13.0 µm/m-°C @Temperature 20.0 - 600 °C	7.22 µin/in-°F @Temperature 68.0 - 1110 °F
	13.2 µm/m-°C @Temperature 20.0 - 700 °C	7.33 µin/in-°F @Temperature 68.0 - 1290 °F
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C	0.110 BTU/lb-°F @Temperature 68.0 °F
	0.550 J/g-°C @Temperature 500 °C	0.131 BTU/lb-°F @Temperature 932 °F
	0.590 J/g-°C @Temperature 600 °C	0.141 BTU/lb-°F @Temperature 1110 °F
Thermal Conductivity	28.4 W/m-K @Temperature 100 °C	197 BTU-in/hr-ft²-°F @Temperature 212 °F
	29.7 W/m-K @Temperature 200 °C	206 BTU-in/hr-ft²-°F @Temperature 392 °F
	29.7 W/m-K @Temperature 600 °C	206 BTU-in/hr-ft²-°F @Temperature 1110 °F
	30.0 W/m-K @Temperature 700 °C	208 BTU-in/hr-ft²-°F @Temperature 1290 °F
	30.0 W/m-K @Temperature 500 °C	208 BTU-in/hr-ft²-°F @Temperature 932 °F
	30.1 W/m-K @Temperature 400 °C	209 BTU-in/hr-ft²-°F @Temperature 752 °F
	30.2 W/m-K @Temperature 300 °C	210 BTU-in/hr-ft²-°F @Temperature 572 °F

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

Electrical Properties	Metric	English
Electrical Resistivity	0.0000500 ohm-cm @Temperature 20.0 °C	0.0000500 ohm-cm @Temperature 68.0 °F
	0.0000860 ohm-cm @Temperature 500 °C	0.0000860 ohm-cm @Temperature 932 °F
	0.0000960 ohm-cm @Temperature 600 °C	0.0000960 ohm-cm @Temperature 1110 °F

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