ASTM E407 No. 30
ASTM No. 30
Material Specific
Composition
100ml HCl, 100ml Ethanol, 5g CuClâ‚‚
Mixed
Method
Immersion
Time
30s
Alternative Names
Tags
Reveals
Grain boundaries, phases
Typical Results
ASTM standard etchant for stainless steels and nickel alloys.
Color Effects
Grain boundaries dark
Compatible Materials
Incompatible Materials
Application Method
Method:immersion
Typical Time:30 seconds
Preparation Notes
Dissolve 5g CuClâ‚‚ in 100ml HCl, then add 100ml ethanol.
Application Notes
Immerse sample for 30-60 seconds. Rinse with water and ethanol.
Troubleshooting
Standard ASTM etchant formulation.
Storage Notes
Store in glass bottle. Shelf life: several months.
Alternative Etchants
- Kalling's No. 2
Similar Etchants
- Kalling's No. 2