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Bohler-Uddeholm BÖHLER W400 VMR® H11 Hot Work Tool Steel

Category Metal , Ferrous Metal , Tool Steel , Hot Work Steel
Manufacturer Bohler-Uddeholm
Trade Name BÖHLER
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Bohler-Uddeholm BÖHLER W400 VMR® H11 Hot Work Tool Steel.pdf
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Material Notes:
W400 VMR is a low silicon, chromium-vanadium hot work tool steel which has been vacuum remelted to obtain the highest uniformity, the best cleanliness of tool steel. The material is characterized:Extremely high toughness, with a minimum of 18 ft-lbs Room temperature Charpy V notch toughness levelsGood general wear resistance, capable of achieving up to 52 HRCGood hot wear resistance with higher hardnessVery good thermal conductivityExcellent polishabilityExtremely good uniformity of properties in all directionsApplications:Heavy duty hot work tools and dies, aluminum and zinc, where cracking is a major issueMandrels, dies, and containers for metal tube and rod extrusionHot extrusion diesHot shear bladesPlastic molds requiring high polishabilityMolds requiring improved cycle timesCold work tooling with severe cracking issues
Physical Properties Metric English Comments
Density 7.60 g/cc

@Temperature 600 °C
 0.275 lb/in³

@Temperature 1110 °F
7.64 g/cc

@Temperature 500 °C
 0.276 lb/in³

@Temperature 932 °F
7.80 g/cc

@Temperature 20.0 °C
 0.282 lb/in³

@Temperature 68.0 °F
Mechanical Properties Metric English Comments
Hardness, Brinell <= 205
<= 205
as delivered
Hardness, Rockwell C 52
52
hardened 990°C
54
54
hardened 990°C then tempered 520°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 Comments
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 29.6 W/m-K

@Temperature 700 °C
 205 BTU-in/hr-ft²-°F

@Temperature 1290 °F
30.5 W/m-K

@Temperature 600 °C
 212 BTU-in/hr-ft²-°F

@Temperature 1110 °F
32.1 W/m-K

@Temperature 500 °C
 223 BTU-in/hr-ft²-°F

@Temperature 932 °F
32.1 W/m-K

@Temperature 100 °C
 223 BTU-in/hr-ft²-°F

@Temperature 212 °F
32.6 W/m-K

@Temperature 200 °C
 226 BTU-in/hr-ft²-°F

@Temperature 392 °F
32.6 W/m-K

@Temperature 400 °C
 226 BTU-in/hr-ft²-°F

@Temperature 752 °F
32.8 W/m-K

@Temperature 300 °C
 228 BTU-in/hr-ft²-°F

@Temperature 572 °F
Component Elements Properties Metric English Comments
Carbon, C 0.37 %
0.37 %
Chromium, Cr 5.0 %
5.0 %
Iron, Fe 92.33 %
92.33 %
As Balance
Manganese, Mn 0.30 %
0.30 %
Molybdenum, Mo 1.3 %
1.3 %
Silicon, Si 0.20 %
0.20 %
Vanadium, V 0.50 %
0.50 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000520 ohm-cm

@Temperature 20.0 °C
 0.0000520 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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