Table 3.
Evaluation values of water resistance

Type of specimens	Control specimen	Nakdong iron	Nakdong torch
Subjects
Average of WA (%)	36.43 (3.86)	30.82 (2.73)	34.46 (4.40)
Average of RWA (%)	-	14.10 (1.25)	4.32 (1.49)