Kallings 2Kalling's Reagent
Kalling's No. 2
Material Specific
Composition
5g CuClâ‚‚, 100ml HCl, 100ml Ethanol
Saturated
Method
Immersion
Time
30s
Alternative Names
Tags
Reveals
Austenite grain boundaries, sigma phase, carbides
Typical Results
Excellent for austenitic stainless steels. Reveals grain boundaries and secondary phases.
Color Effects
Grain boundaries dark, matrix light
Compatible Materials
Incompatible Materials
Application Method
Method:immersion
Typical Time:30 seconds
Preparation Notes
Dissolve 5g CuClâ‚‚ in 100ml HCl, then add 100ml ethanol. Mix thoroughly.
Application Notes
Immerse sample for 30-60 seconds. May require swabbing. Rinse with water and ethanol.
Troubleshooting
Works best on austenitic stainless steels. May over-etch if left too long.
Storage Notes
Store in glass bottle. Shelf life: several months.
Alternative Etchants
- Glyceregia
- Aqua Regia
Similar Etchants
- Kallings No. 1