You have not stated what temperatures you are concerned about, what equipment, or what concentration range other than it being > 98%. The MOC recommendation will depend on answers to these questions. Sulfuric acid is a tricky substance to deal with as its corrosive properties change dramatically with velocity, concentration, impurities, and temperature. For example, carbon steel is often used for sulfuric acid storage tanks but it is not an acceptable MOC for piping due to velocity effects. So you may find it beneficial to consult some specific references on the design and construction of sulfuric acid storage tanks and distribution systems. A good place to start is the NACE standard SP0294 "Design, Fabrication, and Inspection of Storage Tank Systems for Concentrated Fresh and Process Sulfuric Acid and Oleum at Ambient Temperatures."