QRO 90 SUPREME

EXCELLENT HIGH TEMPERATURE STRENGTH AND HOT HARDNESS

With its outstanding thermal fatigue resistance, thermal conductivity and temper back resistance QRO 90 SUPREME excels as a tool steels where tools tempers down quickly to lower hardness. In applications such as hot stamping, brass forging, die casting core inserts and brass extrusion.

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

QRO 90 SUPREME

QRO 90 SUPREME

Hot wear resistance 55%
Plastic deformation resistance 60%
Heat checking resistance 80%
Premature cracking resistance 35%

Reference Grade Hot Work (H13)

Hot wear resistance 40%
Plastic deformation resistance 40%
Heat checking resistance 40%
Premature cracking resistance 35%

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Chemical composition

Carbon	0.38	Silicon	0.30	Manganese	0.80
Chromium	2.60	Molybdenum	2.30	Vanadium	0.90