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Ensinger PEI

Assab Steels HOTVAR Hot Work Steel
Categories: Metal; Ferrous Metal; Tool Steel; Hot Work Steel
Material Notes: HOTVAR is a high performance molybdenum-vanadium alloyed hot-work tool steel which is characterized by:
  • High hot wear resistance
  • Very good high temperature properties
  • High resistance to thermal fatigue
  • Very good temper resistance
  • Very good thermal conductivity

Applications:

  • Warm forging, dies and punches
  • Roll forging, rolling segments
  • Rock orbital forging, punches and dies
  • Upset forging, clamping tools
  • Progressive forging, dies
  • Axial closed die rolling, top and bottom dies
  • Cross forming, segments
  • Hot bending, tools
  • Hot calibration, tools
  • Zinc die casting, dies
  • Al-tube extrusion
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 7.78 g/cc0.281 lb/in³
 7.58 g/cc
@Temperature 600 °C		0.274 lb/in³
@Temperature 1110 °F
 7.67 g/cc
@Temperature 400 °C		0.277 lb/in³
@Temperature 752 °F
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell C 5252600°C tempering temperature (2 + 2hours). Austenitizing temperature 1050°C
 5454600°C tempering temperature (2 + 2hours). Austenitizing temperature 1070°C
 5858550°C tempering temperature (2 + 2hours). Austenitizing temperature 1070°C
 5858550°C tempering temperature (2 + 2hours). Austenitizing temperature 1050°C
 31
@Temperature 650 °C		31
@Temperature 1200 °F		Initial hardness after tempering 58. Testing temperature 650°C. Holding time 100 hours
 31
@Temperature 650 °C		31
@Temperature 1200 °F		Initial hardness after tempering 56. Testing temperature 650°C. Holding time 100 hours
 31
@Temperature 650 °C		31
@Temperature 1200 °F		Initial hardness after tempering 54. Testing temperature 650°C. Holding time 100 hours
 39
@Temperature 600 °C		39
@Temperature 1110 °F		Initial hardness after tempering 58. Testing temperature 600°C. Holding time 100 hours
 39
@Temperature 600 °C		39
@Temperature 1110 °F		Initial hardness after tempering 54. Testing temperature 600°C. Holding time 100 hours
 39
@Temperature 650 °C		39
@Temperature 1200 °F		Initial hardness after tempering 54. Testing temperature 650°C. Holding time 10 hours
 39
@Temperature 650 °C		39
@Temperature 1200 °F		Initial hardness after tempering 56. Testing temperature 650°C. Holding time 10 hours
 39
@Temperature 650 °C		39
@Temperature 1200 °F		Initial hardness after tempering 58. Testing temperature 650°C. Holding time 10 hours
 39
@Temperature 600 °C		39
@Temperature 1110 °F		Initial hardness after tempering 56. Testing temperature 600°C. Holding time 100 hours
 50
@Temperature 650 °C		50
@Temperature 1200 °F		Initial hardness after tempering 54. Testing temperature 650°C. Holding time 1 hour
 51
@Temperature 550 °C		51
@Temperature 1020 °F		Initial hardness after tempering 54. Testing temperature 550°C. Holding time 100 hours
 51
@Temperature 550 °C		51
@Temperature 1020 °F		Initial hardness after tempering 56. Testing temperature 550°C. Holding time 100 hours
 51
@Temperature 550 °C		51
@Temperature 1020 °F		Initial hardness after tempering 58. Testing temperature 550°C. Holding time 100 hours
 52
@Temperature 650 °C		52
@Temperature 1200 °F		Initial hardness after tempering 56. Testing temperature 650°C. Holding time 1 hour
 52
@Temperature 600 °C		52
@Temperature 1110 °F		Initial hardness after tempering 54. Testing temperature 600°C. Holding time 10 hours
 52
@Temperature 600 °C		52
@Temperature 1110 °F		Initial hardness after tempering 56. Testing temperature 600°C. Holding time 10 hours
 52
@Temperature 600 °C		52
@Temperature 1110 °F		Initial hardness after tempering 58. Testing temperature 600°C. Holding time 10 hours
 52
@Temperature 650 °C		52
@Temperature 1200 °F		Initial hardness after tempering 58. Testing temperature 650°C. Holding time 1 hour
 53
@Temperature 600 °C		53
@Temperature 1110 °F		Initial hardness after tempering 54. Testing temperature 600°C. Holding time 1 hour
 54
@Temperature 550 °C		54
@Temperature 1020 °F		Initial hardness after tempering 54. Testing temperature 550°C. Holding time 0-10 hours
 55
@Temperature 600 °C		55
@Temperature 1110 °F		Initial hardness after tempering 56. Testing temperature 600°C. Holding time 1 hour
 56
@Temperature 600 °C		56
@Temperature 1110 °F		Initial hardness after tempering 58. Testing temperature 600°C. Holding time 1 hour
 58 - 60
@Diameter 25.4 mm		58 - 60
@Diameter 1.00 in		Hardness before tempering in Air. Austenitizing temperature: 1050°C. Soaking time 30 minutes.
 59.5
@Diameter 25.4 mm		59.5
@Diameter 1.00 in		HRCair. Austenitizing temperature 1050°C
 59 - 61
@Diameter 25.4 mm		59 - 61
@Diameter 1.00 in		Austenitizing temperature: 1070°C. Soaking time 20 minutes.
 60
@Diameter 25.4 mm		60
@Diameter 1.00 in		HRCair. Austenitizing temperature 1080°C
 61
@Diameter 25.4 mm		61
@Diameter 1.00 in		HRCoil. Austenitizing temperature 1050°C
 60 - 62
@Diameter 25.4 mm		60 - 62
@Diameter 1.00 in		Hardness before tempering in Air. Austenitizing temperature: 1050°C. Soaking time 30 minutes.
 61 - 63
@Diameter 25.4 mm		61 - 63
@Diameter 1.00 in		Austenitizing temperature: 1070°C. Soaking time 20 minutes.
 62
@Diameter 25.4 mm		62
@Diameter 1.00 in		HRCoil. Austenitizing temperature 1080°C
Tensile Strength at Break  400 MPa
@Temperature 700 °C		58000 psi
@Temperature 1290 °F		Rm
 1900 MPa
@Temperature 300 °C		276000 psi
@Temperature 572 °F		Rm
Tensile Strength, Ultimate 2100 MPa305000 psiRm. 54 HRC.
 2200 MPa319000 psiRm. 56 HRC.
 2300 MPa
@Temperature 23.0 °C		334000 psi
@Temperature 73.4 °F
Tensile Strength, Yield 1800 MPa261000 psiRp02. 54 HRC.
 1820 MPa264000 psiRp02. 56 HRC.
 250 MPa
@Temperature 700 °C		36300 psi
@Temperature 1290 °F		Rp02
 1700 MPa
@Temperature 300 °C		247000 psi
@Temperature 572 °F		Rp02
 1850 MPa
@Temperature 23.0 °C		268000 psi
@Temperature 73.4 °F
Elongation at Break  13 %
@Temperature 300 °C		13 %
@Temperature 572 °F
 25 %
@Temperature 700 °C		25 %
@Temperature 1290 °F
Reduction of Area  20 %
@Temperature 300 °C		20 %
@Temperature 572 °F
 55 %
@Temperature 500 °C		55 %
@Temperature 932 °F
 85 %
@Temperature 700 °C		85 %
@Temperature 1290 °F
Modulus of Elasticity 210 GPa30500 ksi
 140 GPa
@Temperature 600 °C		20300 ksi
@Temperature 1110 °F
 180 GPa
@Temperature 400 °C		26100 ksi
@Temperature 752 °F
Impact Test  12.0 J
@Temperature 100 °C		8.85 ft-lb
@Temperature 212 °F		Charpy-V specimens, transverse direction.
 15.5 J
@Temperature 300 °C		11.4 ft-lb
@Temperature 572 °F		Charpy-V specimens, transverse direction.
 
Thermal PropertiesMetricEnglishComments
CTE, linear  12.6 µm/m-°C
@Temperature 20.0 - 400 °C		7.00 µin/in-°F
@Temperature 68.0 - 752 °F
 13.2 µm/m-°C
@Temperature 20.0 - 600 °C		7.33 µin/in-°F
@Temperature 68.0 - 1110 °F
Thermal Conductivity  31.0 W/m-K
@Temperature 20.0 °C		215 BTU-in/hr-ft²-°F
@Temperature 68.0 °F
 33.0 W/m-K
@Temperature 400 °C		229 BTU-in/hr-ft²-°F
@Temperature 752 °F
 33.0 W/m-K
@Temperature 600 °C		229 BTU-in/hr-ft²-°F
@Temperature 1110 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.55 %0.55 %
Chromium, Cr 2.6 %2.6 %
Iron, Fe 91.99 %91.99 %
Manganese, Mn 0.75 %0.75 %
Molybdenum, Mo 2.25 %2.25 %
Silicon, Si 1.0 %1.0 %
Vanadium, V 0.85 %0.85 %

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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NASSAB17 / 15035

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