Cryo / sub-zeroRequired — dry ice or LN2 (right after quench)
Temper2× 2 h · cool to room temp between cycles
Reliable hardness59–64 HRC
Fine-grained stainless — superb edge, low wear resistance. Plate quench + cryo right after to convert retained austenite.
Temper → hardness chart
Approximate HRC after a double-temper at each temperature (from the sources below). Set your target and pick the matching temper.
Temper °F
Temper °C
Hardness
300°F
149°C
64 HRC
350°F
177°C
62 HRC
400°F
204°C
61 HRC
450°F
232°C
62 HRC
Composition (typical, wt%)
Element
%
C
0.67%
Cr
13%
Mn
0.6%
Si
0.4%
Uddeholm AEB-L datasheet
HeatTreatBench — the recipes in your shop, offline
Get the full AEB-L recipe plus 25 more steels offline — set your target HRC and the app gives you the exact temper, with a forge timer and a per-blade log. Works in the shop with no signal.