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Assab Steels DF-3 Cold Work Steel

Category	Metal , Ferrous Metal , Tool Steel , Cold Work Steel , Oil-Hardening Steel
Manufacturer	Assab Steels
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Assab Steels DF-3 Cold Work Steel.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

DF-3 general purpose oil-hardening tool steel is a versatile manganese-chromium-tungsten steel suitable for a wide variety of cold-work applications. Its main characteristics include:Good machinabilityGood dimensional stability in hardeningA good combination of high surface hardness and toughness after hardening and tempering.These characteristics combine to give a steel suitable for the manufacture of tooling with good tool-life and high production economy.DF-3 can be supplied in various finishes including hot-rolled, pre-machined, fine-machined and precision ground. It is also available in the form of hollow bar. AISI 01

Physical Properties	Metric	English
Density	7.81 g/cc	0.282 lb/in³
	7.70 g/cc @Temperature 400 °C	0.278 lb/in³ @Temperature 752 °F
	7.75 g/cc @Temperature 200 °C	0.280 lb/in³ @Temperature 392 °F

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	38.5	38.5	790°C Austenitizing temperature, for tempering at 550°C
	42	42	820°C Austenitizing temperature, for tempering at 550°C
	58	58	790°C Austenitizing temperature, for tempering at 250°C
	60	60	820°C Austenitizing temperature, for tempering at 250°C
	62	62	Hardened and tempered.
	63	63	780°C hardening temp
	64	64	At 860°C hardening temp
	64.6	64.6	820°C hardening temp
Modulus of Elasticity	190 GPa	27600 ksi
	170 GPa @Temperature 400 °C	24700 ksi @Temperature 752 °F
Compressive Strength	1250 MPa	181000 psi	HRC 45 R<sub>c</sub>0.2
	1700 MPa	247000 psi	HRC 45 R<sub>cm</sub>
	2050 MPa	297000 psi	HRC 55 R<sub>c</sub>0.2
	2250 MPa	326000 psi	HRC 62 R<sub>c</sub>0.2
	2450 MPa	355000 psi	HRC 55 R<sub>cm</sub>
	3050 MPa	442000 psi	HRC 62 R<sub>cm</sub>

Thermal Properties	Metric	English
CTE, linear	11.4 µm/m-°C @Temperature 20.0 - 400 °C	6.33 µin/in-°F @Temperature 68.0 - 752 °F
	11.7 µm/m-°C @Temperature 20.0 - 200 °C	6.50 µin/in-°F @Temperature 68.0 - 392 °F
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C	0.110 BTU/lb-°F @Temperature 68.0 °F
Thermal Conductivity	32.0 W/m-K @Temperature 20.0 °C	222 BTU-in/hr-ft²-°F @Temperature 68.0 °F
	33.0 W/m-K @Temperature 200 °C	229 BTU-in/hr-ft²-°F @Temperature 392 °F
	34.0 W/m-K @Temperature 400 °C	236 BTU-in/hr-ft²-°F @Temperature 752 °F

Component Elements Properties	Metric	English
Carbon, C	0.90 %	0.90 %
Chromium, Cr	0.85 %	0.85 %
Iron, Fe	96.5 %	96.5 %
Manganese, Mn	1.2 %	1.2 %
Tungsten, W	0.55 %	0.55 %

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