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Bohler-Uddeholm O1 Cold Work Tool Steel

Category Metal , Ferrous Metal , Alloy Steel , Tool Steel , Cold Work Steel
Manufacturer Bohler-Uddeholm
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Manganese-chromium-tungsten alloyed steelA general purpose oil hardening tool steel suitable for back up and punch holder plates. Features of this grade include a good combination of high surface hardness and toughness after hardening and tempering.AISI O1 is characterized by: Good machinability Good dimensional stability in hardening A good combination of high surface hardness and toughness after hardening and tempering
Physical Properties Metric English Comments
Density 7.81 g/cc
0.282 lb/in³
hardened to 62 HRC
7.70 g/cc

@Temperature 399 °C
0.278 lb/in³

@Temperature 750 °F
hardened to 62 HRC
7.75 g/cc

@Temperature 191 °C
0.280 lb/in³

@Temperature 375 °F
hardened to 62 HRC
Mechanical Properties Metric English Comments
Hardness, Brinell 190
190
Soft annealed
Modulus of Elasticity 193 GPa
28000 ksi
(hardened to 62 HRC)
172 GPa

@Temperature 399 °C
25000 ksi

@Temperature 750 °F
hardened to 62 HRC
186 GPa

@Temperature 191 °C
27000 ksi

@Temperature 375 °F
hardened to 62 HRC
Compressive Yield Strength 1350 MPa
196000 psi
0.2%, hardened to 50 HRC
1800 MPa
261000 psi
0.2%, hardened to 55 HRC
2150 MPa
312000 psi
0.2%, hardened to 60 HRC
2200 MPa
319000 psi
0.2%, hardened to 62 HRC
Thermal Properties Metric English Comments
CTE, linear 6.30 µm/m-°C

@Temperature 20.0 - 400 °C
3.50 µin/in-°F

@Temperature 68.0 - 752 °F
hardened to 62 HRC
6.50 µm/m-°C

@Temperature 20.0 - 200 °C
3.61 µin/in-°F

@Temperature 68.0 - 392 °F
hardened to 62 HRC
Specific Heat Capacity 0.460 J/g-°C

@Temperature 20.0 °C
0.110 BTU/lb-°F

@Temperature 68.0 °F
hardened to 62 HRC
Thermal Conductivity 32.0 W/m-K

@Temperature 20.0 °C
222 BTU-in/hr-ft²-°F

@Temperature 68.0 °F
hardened to 62 HRC
33.0 W/m-K

@Temperature 191 °C
229 BTU-in/hr-ft²-°F

@Temperature 375 °F
hardened to 62 HRC
34.0 W/m-K

@Temperature 399 °C
236 BTU-in/hr-ft²-°F

@Temperature 750 °F
hardened to 62 HRC
Component Elements Properties Metric English Comments
Carbon, C 0.95 %
0.95 %
Chromium, Cr 0.60 %
0.60 %
Manganese, Mn 1.1 %
1.1 %
Tungsten, W 0.60 %
0.60 %
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