Is Hastelloy C-276 or Monel 400 better for Chlorine (Cl₂)?

For Chlorine (Cl₂) valve service, Hastelloy C-276 is the better choice: it is rated Excellent, versus Good for Monel 400.

Hastelloy C-276 vs Monel 400for Chlorine (Cl₂)

Which valve material handles Chlorine (Cl₂) better — a side-by-side of compatibility ratings and the engineering reasons behind them.

For Chlorine (Cl₂) valve service, Hastelloy C-276 is the better choice — rated Excellent versus Good for Monel 400.

Excellent

Best all-round choice for both wet and dry service.

Good

Good for dry chlorine; not for wet.

Ratings and notes are drawn from the Chlorine (Cl₂) service guide. Confirm against concentration, temperature and velocity.

Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

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