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Carpenters

Material Specific

Composition

100ml HCl, 100ml Ethanol, 5g CuClâ‚‚

Mixed

Method

Immersion

Time

30s

Alternative Names

Carpenter's Reagent

Tags

stainless-steelchromium-steel

Reveals

Grain boundaries, phases

Typical Results

For chromium steels and stainless steels.

Color Effects

Grain boundaries dark

Compatible Materials

stainless-steelchromium-steel

Incompatible Materials

carbon-steelaluminum

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

Similar formulation to other copper chloride etchants.

Storage Notes

Store in glass bottle. Shelf life: several months.

Alternative Etchants

  • Kalling's No. 2
  • Adler's Etchant

Similar Etchants

  • Kalling's No. 2

ASTM References

ASTM E407