Back (Fe-Base)

1.3242 | HS6-5-2-5 +Q

Numeric designation1.3242
Chemical designationHS6-5-2-5
State+Q Hardened (not tempered)
Etching3% Nital

The micrographs show a high-speed steel produced by powder metallurgy after hardening (+Q). This was not tempered. The microstructure is very fine-grained with typical carbide precipitations.

The etching time with 3% Nital was 20 min.