Compatibility Atlas
SS 316L vs PTFE-linedfor Sulphuric Acid (H₂SO₄)
Which valve material handles Sulphuric Acid (H₂SO₄) better — a side-by-side of compatibility ratings and the engineering reasons behind them.
Verdict
For Sulphuric Acid (H₂SO₄) valve service, PTFE-lined is the better choice — rated Excellent versus Fair for SS 316L.
SS 316L
FairUp to ~20% at <25°C. Not recommended above 20% or elevated temperature.
All fluids SS 316L handles →PTFE-lined
ExcellentPTFE is excellent across all concentrations and temperatures up to 200°C.
All fluids PTFE-lined handles →Ratings and notes are drawn from the Sulphuric Acid (H₂SO₄) service guide. Confirm against concentration, temperature and velocity.
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Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026
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