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Crucible Steel REX® TMO High Speed Steel, AISI M1

Category Metal , Ferrous Metal , Tool Steel
Manufacturer Crucible Steel
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Crucible Steel REX® TMO High Speed Steel, AISI M1.pdf
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Material Notes:
REX TMO molybdenum-tungsten high speed steel is a tough general purpose high speed steel with high cutting efficiency and excellent finishing properties. It is adapted to fast light cuts on soft or medium hard materials.Information provided by Crucible Industries
Physical Properties Metric English Comments
Density 7.92 g/cc
0.286 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 217 - 235
217 - 235
Hardness, Rockwell C 57

@Tempering Temp. 621 °C
57

@Tempering Temp. 1150 °F
oil quenched from 2100°F then tempered
59.5

@Tempering Temp. 607.2 °C
59.5

@Tempering Temp. 1125 °F
oil quenched from 2100°F then tempered
61

@Tempering Temp. 593 °C
61

@Tempering Temp. 1100 °F
oil quenched from 2100°F then tempered
62.6

@Tempering Temp. 579.4 °C
62.6

@Tempering Temp. 1075 °F
oil quenched from 2100°F then tempered
63.8

@Tempering Temp. 566 °C
63.8

@Tempering Temp. 1050 °F
oil quenched from 2100°F then tempered
64.3

@Tempering Temp. 551.7 °C
64.3

@Tempering Temp. 1025 °F
oil quenched from 2100°F then tempered
64.5

@Tempering Temp. 538 °C
64.5

@Tempering Temp. 1000 °F
oil quenched from 2100°F then tempered
Modulus of Elasticity 207 GPa
30000 ksi
Thermal Properties Metric English Comments
CTE, linear 10.5 µm/m-°C

@Temperature 37.8 - 260 °C
5.85 µin/in-°F

@Temperature 100 - 500 °F
12.1 µm/m-°C

@Temperature 37.8 - 427 °C
6.75 µin/in-°F

@Temperature 100 - 800 °F
12.5 µm/m-°C

@Temperature 37.8 - 538 °C
6.93 µin/in-°F

@Temperature 100 - 1000 °F
Component Elements Properties Metric English Comments
Carbon, C 0.83 %
0.83 %
Chromium, Cr 3.75 %
3.75 %
Iron, Fe 83.4 %
83.4 %
as balance
Manganese, Mn 0.30 %
0.30 %
Molybdenum, Mo 8.5 %
8.5 %
Silicon, Si 0.35 %
0.35 %
Tungsten, W 1.7 %
1.7 %
Vanadium, V 1.15 %
1.15 %
Chemical Properties Metric English Comments
Critical Temperature 827 °C
1520 °F
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