Bohler-Uddeholm O1 Cold Work Tool Steel

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Bohler-Uddeholm O1 Cold Work Tool Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Tool Steel; Cold Work Steel
Material Notes:	Manganese-chromium-tungsten alloyed steel A 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
Key Words:	AISI O1, W.-Nr. 1.2510
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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 %
Iron, Fe	96.75 %	96.75 %	As Balance
Manganese, Mn	1.1 %	1.1 %
Tungsten, W	0.60 %	0.60 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NBUCOR19 / 15488

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