Weck's Reagent
Weck's Etch
Material Specific
Composition
100ml H₂O, 4g KMnO₄, 4g NaOH
4% each
Method
Immersion
Time
60s
Alternative Names
Tags
Reveals
Phases, grain boundaries
Typical Results
Color etchant for stainless steels. Produces colored phases.
Color Effects
Colored phases
Compatible Materials
Incompatible Materials
Application Method
Method:immersion
Typical Time:60 seconds
Temperature:60 °C
Preparation Notes
Dissolve 4g KMnO₄ and 4g NaOH in 100ml water. Heat to 60°C.
Application Notes
Immerse sample at 60°C for 60-120 seconds. Rinse with water.
Troubleshooting
Use hot for best results. Produces color contrast.
Storage Notes
Store in glass bottle. Prepare fresh when needed.
Alternative Etchants
- Kalling's No. 2
Similar Etchants
- Kalling's No. 2