Assab Steels DIEVAR Hot Work Steel

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Assab Steels DIEVAR Hot Work Steel
Categories:	Metal; Ferrous Metal; Chrome-moly Steel; Tool Steel; Hot Work Steel
Material Notes:	DIEVAR is a high performance chromium-molybdenum-vanadium alloyed hot work tool steel which offers a very good resistance to heat checking, gross checking, hot wear and plastic deformation. DIEVAR is characterized by: Excellent toughness and ductility in all directions Good temper resistance Good high-temperature strength Excellent hardenability Good dimensional stability throughout heat treatment and coating operations Applications: Die casting, forging, and extrusion
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Physical Properties	Metric	English	Comments

Density	7.78 g/cc	0.281 lb/in³
	7.58 g/cc @Temperature 800 °C	0.274 lb/in³ @Temperature 1470 °F
	7.67 g/cc @Temperature 399 °C	0.277 lb/in³ @Temperature 750 °F

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	26	26	Hardness during tempering. At tempering temperature (2+ 2h) 700°C. Austenitizing temperature 1025°C (1875°F)
	31	31	Temper resistance. 10 hour holding time at 650°C (1200°F).
	32	32	Temper resistance. 100 hour holding time at 600°C (1110°F).
	33	33	Hardness during tempering. At tempering temperature (2+ 2h) 650°C. Austenitizing temperature 1000°C (1830°F)
	40	40	Temper resistance. 1 hour holding time at 650°C (1200°F).
	42	42	Temper resistance. 100 hour holding time at 550°C (1020°F).
	42	42	Temper resistance. 10 hour holding time at 600°C (1110°F).
	45	45	Temper resistance. 10 hour holding time at 550°C (1020°F).
	45	45	Temper resistance. 1 hour holding time at 550°C (1020°F).
	45	45	Temper resistance. 1 hour holding time at 600°C (1110°F).
	45	45	Temper resistance. 1-100 hour holding time at 500°C (930°F)
	51	51	Hardness during tempering. At tempering temperature (2+ 2h) 400°C. Austenitizing temperature 1000°C (1830°F)
	52	52	Hardness during tempering. At tempering temperature (2+ 2h) 400°C. Austenitizing temperature 1025°C (1875°F)
	52	52	Hardness during tempering. At tempering temperature (2+ 2h) 550°C. Austenitizing temperature 1000°C (1830°F)
	50 - 54	50 - 54	Hardness before tempering. Austenitizing temperature: 1000°C (1830°F). Soaking time 30 minutes.
	53	53	tempering temperature (2+ 2h) 550°C. Austenitizing temperature 1025°C (1875°F)
	53	53	Hardness during tempering. At tempering temperature (2+ 2h) 150°C. Austenitizing temperature 1000°C (1830°F)
	54	54	1000°C (1830°F) austenitizing temperature.
	53 - 57	53 - 57	Hardness before tempering. Austenitizing temperature: 1025°C (1875°F). Soaking time 30 minutes.
	55	55	Hardness during tempering. At tempering temperature (2+ 2h) 150°C. Austenitizing temperature 1025°C (1875°F)
	56	56	1025°C (1877°F) austenitizing temperature.
	57	57	1052°C (1920°F) austenitizing temperature
Tensile Strength at Break	1100 MPa @Temperature 500 °C	160000 psi @Temperature 932 °F	R_m. Short transverse direction.
	1450 MPa @Temperature 100 °C	210000 psi @Temperature 212 °F	R_m. Short transverse direction.
Tensile Strength, Ultimate	1480 MPa	215000 psi	R_m. short transverse direction. 44 HRC.
	1640 MPa	238000 psi	R_m. short transverse direction. 48 HRC.
	1900 MPa @Temperature 23.0 °C	276000 psi @Temperature 73.4 °F
Tensile Strength, Yield	1210 MPa	175000 psi	R_p02. short transverse direction. 44 HRC.
	1380 MPa	200000 psi	R_p02. short transverse direction. 48 HRC.
	900 MPa @Temperature 500 °C	131000 psi @Temperature 932 °F	R_p02. Short transverse direction.
	1200 MPa @Temperature 100 °C	174000 psi @Temperature 212 °F	R_p02. Short transverse direction.
	1560 MPa @Temperature 23.0 °C	226000 psi @Temperature 73.4 °F
Elongation at Break	12.5 %	12.5 %	short transverse direction. 52 HRC
	13 %	13 %	short transverse direction. 44 HRC
	13 %	13 %	short transverse direction. 48 HRC
	11 % @Temperature 200 °C	11 % @Temperature 392 °F	short transverse direction
	15 % @Temperature 400 °C	15 % @Temperature 752 °F	short transverse direction.
	18 % @Temperature 600 °C	18 % @Temperature 1110 °F	short transverse direction.
Reduction of Area	52 %	52 %	short transverse direction. 52 HRC
	55 %	55 %	short transverse direction. 44 HRC
	55 %	55 %	short transverse direction. 48 HRC
	50 % @Temperature 200 °C	50 % @Temperature 392 °F	short transverse direction
	60 % @Temperature 400 °C	60 % @Temperature 752 °F	short transverse direction.
	82 % @Temperature 600 °C	82 % @Temperature 1110 °F	short transverse direction
Modulus of Elasticity	210 GPa	30500 ksi
	145 GPa @Temperature 800 °C	21000 ksi @Temperature 1470 °F
	180 GPa @Temperature 400 °C	26100 ksi @Temperature 752 °F
Charpy Impact	28.0 J	20.7 ft-lb	V notch. Short transverse direction. 700°C tempering temperature (2 + 2h).
	47.0 J	34.7 ft-lb	V notch. Short transverse direction. 600°C tempering temperature (2 + 2h).
	51.0 J	37.6 ft-lb	V notch. Short transverse direction. 400°C tempering temperature (2 + 2h).
	55.0 J	40.6 ft-lb	V notch. Short transverse direction. 200°C tempering temperature (2 + 2h).
	39.0 J @Temperature 100 °C	28.8 ft-lb @Temperature 212 °F	V-notch. Short transverse direction. 50 HRC
	45.0 J @Temperature 100 °C	33.2 ft-lb @Temperature 212 °F	V-notch. Short transverse direction. 47 HRC
	55.0 J @Temperature 100 °C	40.6 ft-lb @Temperature 212 °F	V-notch. Short transverse direction. 45 HRC
	70.0 J @Temperature 250 °C	51.6 ft-lb @Temperature 482 °F	V-notch. Short transverse direction. 47 HRC
	70.0 J @Temperature 250 °C	51.6 ft-lb @Temperature 482 °F	V-notch. Short transverse direction. 50 HRC
	91.0 J @Temperature 250 °C	67.1 ft-lb @Temperature 482 °F	V-notch. Short transverse direction. 45 HRC
	97.0 J @Temperature 400 °C	71.5 ft-lb @Temperature 752 °F	V-notch. Short transverse direction. 47 HRC
	105 J @Temperature 400 °C	77.4 ft-lb @Temperature 752 °F	V-notch. Short transverse direction. 45 HRC
	110 J @Temperature 400 °C	81.1 ft-lb @Temperature 752 °F	V-notch. Short transverse direction. 50 HRC
Impact Test	>= 300 J @Temperature 23.0 °C	>= 221 ft-lb @Temperature 73.4 °F

Thermal Properties	Metric	English	Comments
CTE, linear	12.7 µm/m-°C @Temperature 20.0 - 400 °C	7.06 µin/in-°F @Temperature 68.0 - 752 °F
	13.3 µm/m-°C @Temperature 20.0 - 600 °C	7.39 µin/in-°F @Temperature 68.0 - 1110 °F
Thermal Conductivity	31.0 W/m-K @Temperature 400 °C	215 BTU-in/hr-ft²-°F @Temperature 752 °F
	32.0 W/m-K @Temperature 600 °C	222 BTU-in/hr-ft²-°F @Temperature 1110 °F

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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NASSAB14 / 15032

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