Bohler-Uddeholm WEARTEC SF Cold Work Tool Steel

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Bohler-Uddeholm WEARTEC SF Cold Work Tool Steel (discontinued **)
Categories:	Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel; Tool Steel; Cold Work Steel
Material Notes:	Chromium-molybdenum-vanadium alloyed steel The WEARTEC SF steel grade is a very highly alloyed spray formed cold work tool steel with a combination of extremely high wear resistance and a good resistance to cracking. WEARTEC SF is suitable for rolls and rotary knives with very high demands on abrasive wear resistance and carbide applications requiring toughness. WEARTEC SF is characterized by: Excellent abrasive wear resistance High compressive strength Good toughness Good dimensional stability at heat treatment and in service Very good through hardening properties Very good resistance to tempering back Good WEDM properties Good surface treatment properties
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Physical Properties	Metric	English	Comments

Density	7.31 g/cc	0.264 lb/in³	hardened to 62 HRC

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	270	270	Soft annealed (Delivery condition)
Hardness, Rockwell C	43 - 67	43 - 67	temper temp 210-1290°F (2 x 2h)
Modulus of Elasticity	212 GPa	30800 ksi	(hardened to 62 HRC)
	191 GPa @Temperature 399 °C	27700 ksi @Temperature 750 °F	hardened to 62 HRC
	199 GPa @Temperature 199 °C	28800 ksi @Temperature 390 °F	hardened to 62 HRC
Compressive Yield Strength	1550 MPa	225000 psi	0.2%, hardened to 50 HRC
	2450 MPa	355000 psi	0.2%, hardened to 60 HRC
	2800 MPa	406000 psi	0.2%, hardened to 64 HRC

Thermal Properties	Metric	English	Comments
CTE, linear	10.8 µm/m-°C @Temperature 199 °C	6.00 µin/in-°F @Temperature 390 °F	hardened to 62 HRC
	11.5 µm/m-°C @Temperature 399 °C	6.40 µin/in-°F @Temperature 750 °F	hardened to 62 HRC
Specific Heat Capacity	0.460 J/g-°C	0.110 BTU/lb-°F	hardened to 62 HRC
Thermal Conductivity	17.0 W/m-K @Temperature 199 °C	118 BTU-in/hr-ft²-°F @Temperature 390 °F	hardened to 62 HRC
	20.0 W/m-K @Temperature 399 °C	139 BTU-in/hr-ft²-°F @Temperature 750 °F	hardened to 62 HRC

Component Elements Properties	Metric	English	Comments
Carbon, C	2.8 %	2.8 %
Chromium, Cr	7.0 %	7.0 %
Iron, Fe	77.5 %	77.5 %	As Balance
Manganese, Mn	0.70 %	0.70 %
Molybdenum, Mo	2.3 %	2.3 %
Silicon, Si	0.80 %	0.80 %
Vanadium, V	8.9 %	8.9 %

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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NBUCOR38 / 15507

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