Hastelloy:

This material is universally used in valves and pumps where the greatest resistance is required to corrosion caused by strongly oxidising acids.

Hastelloy-C276 is resistant to strongly oxidising agents such as chlorine, nitric, acetic, formic, phosphoric, sulphuric and hydrofluoric acids, zinc chloride and ammonium solutions, water-based solutions containing chlorine or hypochlorites and acid solutions of ferric and cupric salts.

Hastelloy-D is exceptionally resistant to any concentration of sulphuric acid, up to its boiling point.

	Cu	Tungsten	Mo	Fe	Cobalt	Ni	Grade	Hardness
Hastelloy C 276	14.5-16.5%	3-4.5%	15-17%	4-7%	2.5% max.	Balance	100, 200	170-185 Hv
Hastelloy B2	1.00 max.	3-4.5%	26-30%	2 max	1.00% max.	Balance	100, 200	170-185 Hv
Hastelloy D	1.00 max.	3-4.5%	15-17%	2 max	1.50% max.	Balance	100, 200	170-185 Hv

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