DefinePK

Abstract

This study is conducted to assess the influence of post weld heat treatment on hardness value. The purpose of this study is to measure and analyze the hardness value before and after post weld heat treatment (PWHT) with three different soaking temperatures and three ASTM A36 carbon steel specimens. The specimen is welded by using Shielded Metal Arc Welding (SMAW) process and the AWS E6013 electrode is used with welding current range from 90A-100A. All the specimens were inspected using Ultrasonic Testing (UT) before and after post weld heat treatment (PWHT) process. The specimens in PWHT process were subjected to three different soaking temperatures which are 490°C, 540°C, and 610°C. The Brinell hardness testing process is the last process where the result is observed from hardness value and it can be concluded that by decreasing the hardness value of the welded structure, the brittle fracture risk and improve the ductility will be minimized.