Bohler-Uddeholm UDDEHOLM QRO® 90 SUPREME Hot Work Tool Steel

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Bohler-Uddeholm UDDEHOLM QRO® 90 SUPREME Hot Work Tool Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel; Tool Steel; Hot Work Steel
Material Notes:	Chromium-molybdenum-vanadium alloyed steel QRO® 90 SUPREME is a premium hot work die steel with high hot yield strength and very good temper resistance. Especially suited for die casting of aluminum, copper and brass. QRO® 90 SUPREME is characterized by: Excellent high temperature strength and hot hardness Very good temper resistance Unique resistance to thermal fatigue Excellent thermal conductivity Good toughness and ductility in longitudinal and transverse directions Uniform machinability Good heat treatment properties Applications: Die Casting Dies and Associated Tooling, Extrusion dies and Extrusion Tooling and Forging dies
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Available Properties

Density, hardness of 45 HRC
Density, hardness of 45 HRC
Density, hardness of 45 HRC
Hardness, Brinell, Soft annealed (Delivery condition)
Tensile Strength, Ultimate, hardness of 40 HRC
Tensile Strength, Ultimate, hardness of 45 HRC
Tensile Strength, Ultimate, hardness of 48 HRC
Tensile Strength, Yield, hardness of 40 HRC
Tensile Strength, Yield, hardness of 45 HRC
Tensile Strength, Yield, hardness of 48 HRC
Modulus of Elasticity, (hardness of 45 HRC)
Modulus of Elasticity, hardness of 45 HRC
Modulus of Elasticity, hardness of 45 HRC
Charpy Impact, V-notch
Charpy Impact, V-notch
CTE, linear, hardness of 45 HRC
CTE, linear, hardened to 45 HRC
Thermal Conductivity, hardness of 45 HRC
Thermal Conductivity, hardness of 45 HRC
Processing Temperature, heated for 30 min, then quenched in air and tempered 2 + 2 h at 1190°F (hardness = 45 HRC)
Carbon, C
Chromium, Cr
Iron, Fe, As Balance
Manganese, Mn
Molybdenum, Mo
Silicon, Si
Vanadium, V

Property Data

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