(supersedes all previous editions)
Alleima® 14C28N is a martensitic stainless chromium steel with a chemistry optimized for high quality professional knife applications. The chemical composition provides a unique combination of properties including:
Alleima® 14C28N is mainly recommended for knife applications which put very high demands on edge sharpness, edge stability and corrosion resistance. Examples are pocket knives, chefs knives, hunting knives and fishing knives.
The strip steel can be supplied either in coils or as straightened lengths of 0.5–4.0 m (1.6–13.1 ft). The coil weight is max. 5 kg/mm (2800 lb/in) of strip width.
Hardening and tempering of the strip steel is needed to achieve the correct finish and to meet the properties required by the end user.
|mm (in)||mm (in)|
|1.0 (0.039)||4.5 (0.177)||5 (0.1968)||380 (14.96)|
Other sizes can be offered on request.
Hardening temperature 1050°C (1922°F), holding time 5 minutes, quenching in oil.
The following diagram exemplifies the tempering response for Alleima® 14C28N®. More detailed hardening data can be found in the Alleima hardening guide.
Strip thickness 2.5 mm (0.098 in.), tempering time 30 minutes.
Brittleness and loss of corrosion resistance occur with tempering above 450°C (840°F).
The following figures show the importance of using the right hardening conditions to optimize the microstructure and properties.
|Soft annealed||max. 700 (102)||max. 215||max. 94.3|
|Annealed||750 ±100 (109±14)||235 ± 35||97.4 ± 6|
|Cold rolled||700-1100 (102-160)||215-345||94.3-108.7|
* Hardness values are converted from tensile strength and shall be considered approximate
** Values above 100 are outside the HRB range and are provided as indication only
The physical properties of a steel are related to a number of factors, including alloying elements, heat treatment and manufacturing route, but the data presented below can generally be used for rough calculations.
Density : 7.7 g/cm3 (0.28 lb/in3)
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.