| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrolytic solution storge container hardly deteriorating quality of an electrolytic solution by ferritic stainless steel easily providing good surface property.SOLUTION: There is provided a lithium ion secondary battery electrolytic solution storage container made of ferritic stainless steel containing C:0.02 mass% or less, Si:0.80 mass% or less, Mn:0.80 mass% or less, P:0.04 mass% or less, S:0.003 mass% or less, Cr:10.5 to 35.0 mass%, N:0.025 mass% or less, Al:0.20 mass% or less, Nb:7×(C+N) to 0.60 mass% and Ti:0.02 mass% or less and the balance Fe with inevitable impurities, and having non-metallic inclusion with over 5 μm of 0.05 vol.% or less, non-metallic inclusion with less than 5 μm including NbC of 0.4 vol.% or less and an inner arithmetic average roughness (Ra) defined by JIS B 0601:2001 of 1.5 μm or less. |
