Jurnal IPTEK
Vol 26, No 1 (2022)

The Mechanical Properties and Microstructure Analysis of Carbon Structural Steel After Quenching in Circulated Water Medium

Afira Ainur Rosidah (Institut Teknologi Adhi Tama Surabaya)
Vuri Ayu Setyowati (Institut Teknologi Adhi Tama Surabaya)
Suheni Suheni (Institut Teknologi Adhi Tama Surabaya)
Muhamad Febrianto (Institut Teknologi Adhi Tama Surabaya)

Article Info

Publish Date
30 May 2022


The use of carbon structural steel in construction is widely developed. It is important to do research continuously in order to get the optimum mechanical and physical properties of a material. Heat treatment which includes heating and quenching is a process that can be carried out to improve mechanical properties. A fast cooling rate is used to obtain higher strength and hardness. This research studied the effect of quenching using circulated water medium with water flow rate variations in structural steel Q235, Q255, and Q275 to their mechanical properties and microstructure. The heat treatment process was done with hardening at 1150oC, roll milling at austenitizing temperature, then quenching using circulated water medium with water flow rate of 225, 238, 247 m3/h. The tensile and hardness test results showed that water flow rate and carbon content in steel give an effect on strength and hardness. The highest tensile strength and hardness value were achieved by Q275 steel with a flow rate of 247 m3/h, which are 73,49 kgf/mm2 and 298 HVN, respectively. Meanwhile, the microstructures resulted in the presence of the mixture of martensite and pearlite, as well as ferrite in every sample with the increase in the composition of martensite and pearlite in Q275 steel with a flow rate of 247 m3/h.

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Journal Info





Civil Engineering, Building, Construction & Architecture Computer Science & IT Industrial & Manufacturing Engineering Mechanical Engineering


Jurnal IPTEK - Media Komunikasi Teknologi Diterbitkan secara berkala setahun 2 (dua) kali pada bulan Mei dan Desember oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM), Institut Teknologi Adhi Tama Surabaya (ITATS). Jurnal ini memuat hal-hal yang berkaitan dengan bidang Teknik Sipil, ...