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Evaluation of Special Quality Die Steels NADCA Project Die Materials Committee Purdue – Oct. 2009

Evaluation of Special Quality Die Steels NADCA Project Die Materials Committee Purdue – Oct. 2009. STEELS. BohlerUddeholm Dievar Thyssen E38K Thyssen 2367 Ellwood ExELL Tuf-Die SAMPLES-Phase I 4- Thermal fatigue samples quenched in oil, triple tempered to 44-46HRC

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Evaluation of Special Quality Die Steels NADCA Project Die Materials Committee Purdue – Oct. 2009

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  1. Evaluation of Special Quality Die Steels NADCA Project Die Materials Committee Purdue – Oct. 2009

  2. STEELS BohlerUddeholm Dievar Thyssen E38K Thyssen 2367 Ellwood ExELL Tuf-Die SAMPLES-Phase I 4- Thermal fatigue samples quenched in oil, triple tempered to 44-46HRC 5- Charpy V-notch, heat treated in oil and triple tempered to 44-46HRC.  4- Thermal fatigue samples quenched in a vacuum furnace and triple tempered to 44-46HRC (welded to a 16” block).  5- Charpy V-notch quenched in vacuum and triple tempered to 44- 46HRC (cut from plate that was welded to a 16” block).

  3. STEELS BohlerUddeholm Dievar Thyssen E38K Thyssen 2367 Ellwood ExELL Tuf-Die SAMPLES-Phase II 4- Thermal fatigue samples quenched in oil, triple tempered to 48-50HRC 5- Charpy V-notch, heat treated in oil and triple tempered to 48-50HRC.  4- Thermal fatigue samples quenched in a vacuum furnace and triple tempered to 48-50HRC (welded to a 16” block).  5- Charpy V-notch quenched in vacuum and triple tempered to 48- 50HRC (cut from plate that was welded to a 16” block).

  4. Flow Chart for Die Steel Evaluation Receive steel block – mark grain orientation Cut blanks for Thermal Fatigue and Charpy V-notch Rough machine CVN “potential” Rough machine Thermal Fatigue and CVN plate Oil quench CVN “potential” Vacuum quench Thermal Fatigue and CVN plate Finish/ Grind Thermal Fatigue and Charpy V-notch Test Thermal Fatigue and Charpy V-notch Impact Report Thermal Fatigue and CVN Results

  5. Cutting line Charpy impact specimens are taken from the “red” bar as shown in page 2. 8’’ 7’’ 2.215’’ 2.125’’ 2.125’’ 2.125’’ 8’’ 2.3’’ 2.125’’ 2.125’’ Length direction Thickness direction * taken from a 12" thick x 10" wide slab

  6. 2367 and E38K

  7. CAPABILITY HEAT TREATMENT (44-46HRC) NADCA GRADE ID SUPPLIER AUSTENITIZING TEMPERx3 TYPE

  8. CAPABILITY HEAT TREATMENT (Oil Quench and Triple Tempered to 44-46HRC)

  9. CAPABILITY HEAT TREATMENT (48-50HRC) NADCA GRADE ID SUPPLIER AUSTENITIZING TEMPERx3 TYPE

  10. CAPABILITY HEAT TREATMENT (Oil Quench and Triple Tempered to 48-50HRC)

  11. VACUUM HEAT TREATMENT (Triple Tempered to 44-46HRC)

  12. Average Maximum Crack Length Superior Steels (Oil quench) 44-46HRC

  13. Total Crack Area Superior Steels (Oil Quench) 44-46HRC

  14. Average Maximum Crack Length Superior Steels (Vacuum Quench) 44-46HRC

  15. Total Crack Area Superior Steels (Vacuum Quench) 44-46HRC

  16. SET-UP for Vacuum Heat Treatment of the Special Steels

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