P-22
Citation:
P-22. Posco, “Automotive Steel Data Book,” 2016.
R-9
Citation:
R-9. D. Kim, “Roll Stamping Device”, Patent KR101786260B1 Issued to Don-Gun Kim and assigned to POSCO Co. Ltd.
P-18
Citation:
P-18. POSCO, “POSCO Automotive Steel,” 2014. Last accessed, 1 June 2021.
O-4
Citation:
O-4. Graphics and examples contributed by Dr. Kyung-Seok OH, POSCO.