Bohler-Uddeholm IMPAX® P20 Hot Work Tool Steel

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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 Properties	Original Value	Comments

Density	0.282 lb/in³	hardness of 310 HB
	0.280 lb/in³ @Temperature 199 °C	hardness of 310 HB

Mechanical Properties	Original Value	Comments
Hardness, Brinell	290 - 341	Hardened and tempered (Delivery condition)
Tensile Strength, Ultimate	146000 psi	(hardness of 325 HB)
	130000 psi @Temperature 199 °C	(hardness of 325 HB)
Tensile Strength, Yield	116000 psi @Strain 0.2 %	68°F (hardness of 325 HB)
	130000 psi @Strain 0.2 %	68°F (hardness of 325 HB)
Modulus of Elasticity	29700 ksi	(hardness of 310 HB)
	29000 ksi @Temperature 199 °C	hardness of 310 HB
Compressive Yield Strength	850 - 1000 MPa
Charpy Impact	3.70 - 7.40 ft-lb @Temperature -100 °C	V-notch
	30.0 - 50.0 ft-lb @Temperature 150 °C	V-notch

Thermal Properties	Original Value	Comments
CTE, linear	7.00 µin/in-°F @Temperature 199 °C	hardness of 310 HB
Specific Heat Capacity	0.110 BTU/lb-°F @Temperature 20.0 °C	hardness of 310 HB
Thermal Conductivity	29.0 W/m-K @Temperature 20.0 °C	hardness of 310 HB
	30.0 W/m-K @Temperature 199 °C	hardness of 310 HB

Component Elements Properties	Original Value	Comments
Carbon, C	0.37 %
Chromium, Cr	2.0 %
Iron, Fe	94.73 %	As Balance
Manganese, Mn	1.4 %
Molybdenum, Mo	0.20 %
Nickel, Ni	1.0 %
Silicon, Si	0.30 %
Sulfur, S	<= 0.010 %

**
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NBUCOR05 / 15474

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