Achmad  Taufik, Achmad  As’ad Sonief, Agus  Suprapto, Pratikto  , 
    The Influence of Hot Rolled Plate Steel Treatment using Temper and Quench-Temper Method
on Vickers Hardness Number Enhancement,
    Journal of Engineering and Applied Sciences,
    Volume 16,Issue 11,
    2021,
    Pages 341-347,
    ISSN 1816-949x,
    jeasci.2021.341.347,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2021.341.347)
    Abstract: The material performance has main features
such as hardness, strength and toughness. Steel is the
ferrous metal that functions as a fundamental element
mixed with several parts. This research to obtain Quench
Tempered Steel material with high hardness and analysis
radius bending of steel treated by quench and temper
methods, the influence of hold time, diameter of steel and
impression rim was studied. The result shows that the
high value of hardness is 498 HV with a holding time of
20 min which means steel developed has an eminence
tensile strength combination, impact strength and
satisfactory ductility for structural application.
    Keywords: austenite;ferrite;Martensite;impact strength and ductility