| Autor: |
Affandi, Affandi, Tanjung, Iqbal, Nasution, Arya Rudi, Siregar, Ahmad Marabdi |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2702 Issue 1, p1-4, 4p |
| Abstrakt: |
All human needs cannot be separated from the metal element, metal is one of the supporting technologies at this time so metal properties engineering is one of the promising topics. Tempering is a process used to change the properties of steel, this process aims to change several important parameters in the material such as hardness and toughness. This research aimed to determine the differences in hardness and strength values of NS-4340 steel before and after tempering. The test specimens were used following the ASTM E-23 standard. The heating process is performed using a heating furnace, the test specimens were heated at a temperature of 650 °C for 15 minutes. Furthermore, the specimens were cooled using water media with variations in cooling time of 15, 20, and 25 minutes. The test results show that the tempering process with cooling time variations influences the material's hardness and toughness. NS-4340 steel has a higher hardness value and becomes softer due to this process. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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