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Rulon Bearings

Bohler-Uddeholm IMPAX® P20 Hot Work Tool Steel  (discontinued **)
Categories: Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel; Tool Steel; Hot Work Steel
Material Notes: Chromium-nickel-molybdenum alloyed steel

A pre-hardened Ni-Cr-Mo-steel supplied at 290-341 HB suitable for die casting of zinc, lead and tin. Also suitable for high strength holder blocks.

Impax Supreme offers the following benefits:

  • No hardening risks
  • No hardening costs
  • Time saving, e.g. no waiting for heat treatment
  • Lower tool cost
  • Modifications easily carried out
  • Can be subsequently nitrated to increase surface wear resistance or locally flame hardened to reduce surface damage
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Physical PropertiesMetricEnglishComments
Density 7.81 g/cc0.282 lb/in³hardness of 310 HB
 7.75 g/cc
@Temperature 199 °C		0.280 lb/in³
@Temperature 390 °F		hardness of 310 HB
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 290 - 341290 - 341Hardened and tempered (Delivery condition)
Tensile Strength, Ultimate 1010 MPa146000 psi(hardness of 325 HB)
 896 MPa
@Temperature 199 °C		130000 psi
@Temperature 390 °F		(hardness of 325 HB)
Tensile Strength, Yield  800 MPa
@Strain 0.2 %		116000 psi
@Strain 0.2 %		68°F (hardness of 325 HB)
 896 MPa
@Strain 0.2 %		130000 psi
@Strain 0.2 %		68°F (hardness of 325 HB)
Modulus of Elasticity 205 GPa29700 ksi(hardness of 310 HB)
 200 GPa
@Temperature 199 °C		29000 ksi
@Temperature 390 °F		hardness of 310 HB
Compressive Yield Strength 850 - 1000 MPa123000 - 145000 psi
Charpy Impact  5.02 - 10.0 J
@Temperature -100 °C		3.70 - 7.40 ft-lb
@Temperature -148 °F		V-notch
 40.7 - 67.8 J
@Temperature 150 °C		30.0 - 50.0 ft-lb
@Temperature 302 °F		V-notch
 
Thermal PropertiesMetricEnglishComments
CTE, linear 12.6 µm/m-°C
@Temperature 199 °C		7.00 µin/in-°F
@Temperature 390 °F		hardness of 310 HB
Specific Heat Capacity 0.460 J/g-°C
@Temperature 20.0 °C		0.110 BTU/lb-°F
@Temperature 68.0 °F		hardness of 310 HB
Thermal Conductivity  29.0 W/m-K
@Temperature 20.0 °C		201 BTU-in/hr-ft²-°F
@Temperature 68.0 °F		hardness of 310 HB
 30.0 W/m-K
@Temperature 199 °C		208 BTU-in/hr-ft²-°F
@Temperature 390 °F		hardness of 310 HB
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.37 %0.37 %
Chromium, Cr 2.0 %2.0 %
Iron, Fe 94.73 %94.73 %As Balance
Manganese, Mn 1.4 %1.4 %
Molybdenum, Mo 0.20 %0.20 %
Nickel, Ni 1.0 %1.0 %
Silicon, Si 0.30 %0.30 %
Sulfur, S <= 0.010 %<= 0.010 %

**
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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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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