Bohler-Uddeholm TOUGHTEC SF

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Bohler-Uddeholm TOUGHTEC SF (discontinued **)
Categories:	Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel
Material Notes:	Chromium-molybdenum-vanadium alloyed steel The TOUGHTEC SF steel grade is a highly alloyed spray formed tool steel, offering a combination of excellent wear resistance and toughness. It is designed for severe abrasive applications and due to the spray forming process the alloy combines high wear resistance with high ductility. TOUGHTEC SF is suitable for screws for plastic injection and extrusion, cold and hot forming rolls, hot shearing knives and hot forging trimming dies. TOUGHTEC SF is characterized by: Very high wear resistance Very good toughness Good compressive strength 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	7.56 g/cc	0.273 lb/in³	hardened to 53 HRC

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	215	215	Soft annealed (Delivery condition)
Tensile Strength, Ultimate	848 MPa @Temperature 649 °C	123000 psi @Temperature 1200 °F
	1170 MPa @Temperature 599 °C	170000 psi @Temperature 1110 °F
	1400 MPa @Temperature 499 °C	203000 psi @Temperature 930 °F
Tensile Strength, Yield	550 MPa @Strain 0.2 %, Temperature 649 °C	79800 psi @Strain 0.2 %, Temperature 1200 °F
	848 MPa @Strain 0.2 %, Temperature 599 °C	123000 psi @Strain 0.2 %, Temperature 1110 °F
	1150 MPa @Strain 0.2 %, Temperature 499 °C	167000 psi @Strain 0.2 %, Temperature 930 °F
Elongation at Break	5.0 % @Temperature 499 °C	5.0 % @Temperature 930 °F
	7.0 % @Temperature 599 °C	7.0 % @Temperature 1110 °F
	8.0 % @Temperature 649 °C	8.0 % @Temperature 1200 °F
Reduction of Area	15 % @Temperature 499 °C	15 % @Temperature 930 °F
	29 % @Temperature 599 °C	29 % @Temperature 1110 °F
	38 % @Temperature 649 °C	38 % @Temperature 1200 °F
Modulus of Elasticity	212 GPa	30800 ksi	(hardened to 53 HRC)
	193 GPa @Temperature 399 °C	28000 ksi @Temperature 750 °F	hardened to 53 HRC
	203 GPa @Temperature 199 °C	29500 ksi @Temperature 390 °F	hardened to 53 HRC
Compressive Yield Strength	1650 MPa	239000 psi	0.2%, hardened to 50 HRC
	1950 MPa	283000 psi	0.2%, hardened to 56 HRC
	2150 MPa	312000 psi	0.2%, hardened to 60 HRC

Thermal Properties	Metric	English	Comments
CTE, linear	10.6 µm/m-°C @Temperature 199 °C	5.90 µin/in-°F @Temperature 390 °F	hardened to 53 HRC
	11.5 µm/m-°C @Temperature 399 °C	6.40 µin/in-°F @Temperature 750 °F	hardened to 53 HRC
Specific Heat Capacity	0.460 J/g-°C	0.110 BTU/lb-°F	hardened to 53 HRC
Thermal Conductivity	23.0 W/m-K @Temperature 199 °C	160 BTU-in/hr-ft²-°F @Temperature 390 °F	hardened to 53 HRC
	26.0 W/m-K @Temperature 399 °C	180 BTU-in/hr-ft²-°F @Temperature 750 °F	hardened to 53 HRC

Component Elements Properties	Metric	English	Comments
Carbon, C	1.6 %	1.6 %
Chromium, Cr	5.0 %	5.0 %
Iron, Fe	83 %	83 %	As Balance
Manganese, Mn	0.50 %	0.50 %
Molybdenum, Mo	2.3 %	2.3 %
Silicon, Si	0.40 %	0.40 %
Vanadium, V	7.2 %	7.2 %

**
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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