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- Bohler-Uddeholm UDDEHOLM QRO® 90 SUPREME Hot Work Tool Steel
Bohler-Uddeholm UDDEHOLM QRO® 90 SUPREME Hot Work Tool Steel
| Category | Metal , Ferrous Metal , Alloy Steel , Chrome-moly Steel , Tool Steel , Hot Work Steel |
| Manufacturer | Bohler-Uddeholm |
| Trade Name | UDDEHOLM |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Bohler-Uddeholm UDDEHOLM QRO® 90 SUPREME Hot Work Tool Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Chromium-molybdenum-vanadium alloyed steelQRO® 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 propertiesApplications: Die Casting Dies and Associated Tooling, Extrusion dies and Extrusion Tooling and Forging dies
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.78 g/cc | 0.281 lb/in³ | hardness of 45 HRC |
| 7.58 g/cc @Temperature 599 °C |
0.274 lb/in³ @Temperature 1110 °F |
hardness of 45 HRC | |
| 7.67 g/cc @Temperature 399 °C |
0.277 lb/in³ @Temperature 750 °F |
hardness of 45 HRC |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | 180 | 180 | Soft annealed (Delivery condition) |
| Tensile Strength, Ultimate | 1250 MPa | 181000 psi | hardness of 40 HRC |
| 1470 MPa | 213000 psi | hardness of 45 HRC | |
| 1620 MPa | 235000 psi | hardness of 48 HRC | |
| Tensile Strength, Yield | 1100 MPa @Strain 0.200 % |
160000 psi @Strain 0.200 % |
hardness of 40 HRC |
| 1270 MPa @Strain 0.200 % |
184000 psi @Strain 0.200 % |
hardness of 45 HRC | |
| 1400 MPa @Strain 0.200 % |
203000 psi @Strain 0.200 % |
hardness of 48 HRC | |
| Modulus of Elasticity | 210 GPa | 30500 ksi | (hardness of 45 HRC) |
| 140 GPa @Temperature 599 °C |
20300 ksi @Temperature 1110 °F |
hardness of 45 HRC | |
| 180 GPa @Temperature 399 °C |
26100 ksi @Temperature 750 °F |
hardness of 45 HRC | |
| Charpy Impact | 17.6 J @Temperature 98.9 °C |
13.0 ft-lb @Temperature 210 °F |
V-notch |
| 47.5 J @Temperature 599 °C |
35.0 ft-lb @Temperature 1110 °F |
V-notch |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 12.6 µm/m-°C @Temperature 399 °C |
7.00 µin/in-°F @Temperature 750 °F |
hardness of 45 HRC |
| 13.1 µm/m-°C @Temperature 599 °C |
7.30 µin/in-°F @Temperature 1110 °F |
hardened to 45 HRC | |
| Thermal Conductivity | 33.0 W/m-K @Temperature 399 °C |
229 BTU-in/hr-ft²-°F @Temperature 750 °F |
hardness of 45 HRC |
| 33.0 W/m-K @Temperature 599 °C |
229 BTU-in/hr-ft²-°F @Temperature 1110 °F |
hardness of 45 HRC |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | 0.38 % | 0.38 % | |
| Chromium, Cr | 2.6 % | 2.6 % | |
| Manganese, Mn | 0.75 % | 0.75 % | |
| Molybdenum, Mo | 2.25 % | 2.25 % | |
| Silicon, Si | 0.30 % | 0.30 % | |
| Vanadium, V | 0.90 % | 0.90 % |
| Processing Properties | Metric | English | Comments |
|---|---|---|---|
| Processing Temperature | 1029 °C | 1885 °F | heated for 30 min, then quenched in air and tempered 2 + 2 h at 1190°F (hardness = 45 HRC) |
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