Tantalum Coated Hex Nuts

Tantalum Coated Hex Nuts are engineered to partner with bolts and studs in critical assemblies that must operate in the presence of highly aggressive chemical and acidic media. The coating, a dense and non-porous layer of pure Tantalum, is applied to a mechanically strong substrate (like alloy steel or nickel alloy), effectively creating an impenetrable corrosion proof barrier. Tantalum is globally recognized for its chemical inertness, resisting virtually all common corrosive agents, including fuming nitric and concentrated sulfuric acids. Zeron Fastners is a leading supplier and manufacturer in India, specializing in these acid resistant nuts to ensure the long-term integrity and safety of connections in petrochemical, pharmaceutical, and chemical reactor systems.

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Tantalum Coated Hex Nuts Coating Composition

Element Coating Composition (%)
Tantalum (Ta) 99.95 minimum
Niobium (Nb) 0.01 maximum
Oxygen (O) 0.015 maximum
Carbon (C) 0.01 maximum
Nickel (Ni) Trace maximum
Other Impurities 0.015 maximum

Tantalum Coated Hex Nuts Mechanical Properties

Property Value (Typical)
Coating Thickness (Average) 20 to 50 micrometers
Proof Load Stress, minimum 830 MPa (varies by grade)
Max Operating Temperature (Coating) 200°C (in highly corrosive media)
Chemical Barrier Supreme
Substrate Grade Example ASTM A194 Gr. 2H or equivalent

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