◎:Does not corrode (usable)
○:Partly corrodes (limited use available)
△:Corrodes (better not to use)
×:Highly corroded (usage prohibited)
* The above values are standard values and not guarantee values.
* In the density indication, “sat.” indicates a saturated aqueous solution at room temperature, and values other than 100 indicate the density of the aqueous solution as a percentage.