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Table 3 First composition of LePera solution

From: Quantitative analysis of retained austenite in Nb added Fe-based alloy

No.

Etchant

Content

Condition

1

Na2S2O5

1.0 g

30 s

2

Dry picric acid

4.0 g

3

Ethanol (96%)

100 ml

4

Distilled H2O

100 ml