Metallography Consumables
Nital Etchant
Standard etchant for carbon and low-alloy steels
PRODUCT OVERVIEW
Nital (nitric acid in ethanol) is the most widely used etchant for carbon and low-alloy steels. Reveals grain boundaries, ferrite, pearlite, martensite, and bainite microstructures. Available in 2% and 4% concentrations.
TECHNICAL SPECIFICATIONS
Composition2% or 4% HNO₃ in ethanol
ApplicationSwab or immersion
Etch Time5–60 seconds
MaterialsCarbon steels, low-alloy steels, cast iron
Packaging100mL, 500mL
SafetyFlammable, oxidising — see SDS
APPLICATIONS
- Carbon steel microstructure
- Low-alloy steel examination
- Cast iron structure
- Martensite and bainite revelation
- Grain boundary etching
KEY FEATURES
- Most widely used steel etchant
- Reveals all major steel microstructural constituents
- Ready-to-use formulation
- Available in 2% and 4% concentrations
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Metallographic Etchants