Bohler-Uddeholm BÖHLER S400(M7) High Speed Steel

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Bohler-Uddeholm BÖHLER S400(M7) High Speed Steel
Categories:	Metal; Ferrous Metal; Tool Steel
Material Notes:	Description: High alloyed molybdenum high speed steel with good resistance and high toughness. Applications: Taps, twist drills, reamers, milling tools, broaches tools, cold extrusion dies. Standards: DIN/EN 1.3348 HS2-9-2, AISI M7, UNS T11307, JIS SKH58
Key Words:	EN 1.3348; HS2-9-2; AISI M7; UNS T11307
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Physical Properties	Original Value	Comments

Density	8.30 g/cc

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	217 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000650 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	11.0 µm/m-°C @Temperature 100 °C
	11.5 µm/m-°C @Temperature 200 °C
	11.9 µm/m-°C @Temperature 300 °C
	12.3 µm/m-°C @Temperature 400 °C
	12.4 µm/m-°C @Temperature 500 °C
	12.5 µm/m-°C @Temperature 700 °C
	12.5 µm/m-°C @Temperature 600 °C
Specific Heat Capacity	0.110 BTU/lb-°F
Thermal Conductivity	19.0 W/m-K

Component Elements Properties	Original Value	Comments
Carbon, C	1.02 %
Chromium, Cr	3.8 %
Iron, Fe	82.18 %	As remainder
Manganese, Mn	0.30 %
Molybdenum, Mo	8.6 %
Silicon, Si	0.40 %
Tungsten, W	1.8 %
Vanadium, V	1.9 %

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NBUCOR62 / 133735

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