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Assab Steels HOTVAR Hot Work Steel

Category Metal , Ferrous Metal , Tool Steel , Hot Work 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 HOTVAR Hot Work Steel.pdf
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Material Notes:
HOTVAR is a high performance molybdenum-vanadium alloyed hot-work tool steel which is characterized by:High hot wear resistanceVery good high temperature propertiesHigh resistance to thermal fatigueVery good temper resistanceVery good thermal conductivityApplications: Warm forging, dies and punchesRoll forging, rolling segmentsRock orbital forging, punches and diesUpset forging, clamping toolsProgressive forging, diesAxial closed die rolling, top and bottom diesCross forming, segmentsHot bending, toolsHot calibration, toolsZinc die casting, diesAl-tube extrusion
Physical Properties Metric English Comments
Density 7.78 g/cc
0.281 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 Properties Metric English Comments
Hardness, Rockwell C 52
52
600°C tempering temperature (2 + 2hours). Austenitizing temperature 1050°C
54
54
600°C tempering temperature (2 + 2hours). Austenitizing temperature 1070°C
58
58
550°C tempering temperature (2 + 2hours). Austenitizing temperature 1070°C
58
58
550°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
 HRC<sub>air</sub>. 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
 HRC<sub>air</sub>. Austenitizing temperature 1080°C
61

@Diameter 25.4 mm
 61

@Diameter 1.00 in
 HRC<sub>oil</sub>. 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
 HRC<sub>oil</sub>. Austenitizing temperature 1080°C
Tensile Strength at Break 400 MPa

@Temperature 700 °C
 58000 psi

@Temperature 1290 °F
 R<sub>m</sub>
1900 MPa

@Temperature 300 °C
 276000 psi

@Temperature 572 °F
 R<sub>m</sub>
Tensile Strength, Ultimate 2100 MPa
305000 psi
R<sub>m</sub>. 54 HRC.
2200 MPa
319000 psi
R<sub>m</sub>. 56 HRC.
2300 MPa

@Temperature 23.0 °C
 334000 psi

@Temperature 73.4 °F
Tensile Strength, Yield 1800 MPa
261000 psi
R<sub>p</sub>02. 54 HRC.
1820 MPa
264000 psi
R<sub>p</sub>02. 56 HRC.
250 MPa

@Temperature 700 °C
 36300 psi

@Temperature 1290 °F
 R<sub>p</sub>02
1700 MPa

@Temperature 300 °C
 247000 psi

@Temperature 572 °F
 R<sub>p</sub>02
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 GPa
30500 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 Properties Metric English Comments
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 Properties Metric English Comments
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 %
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