Martensitic steel

KLEINOX 4197 – DIN EN X20CrNiMoS13-1 – AISI 420F MOD – ASTM F899

KLEINOX 4197 DIN EN X20CrNiMoS13-1 – AISI 420F MOD ASTM F899 trafilati inox, acciai martensitici acciaio trafilato acciaio rettificato acciaio martensitico acciaio temperabile 1.4197 X20CrNiMoS13-1 ASTM F899 AISI 420 MOD F strumentazione chirurgica frese dentale implantologia


KLEINOX 4197 (AISI 420F MOD) hardenable martensitic stainless steel has an increased S content to enhance its machinability. The Mo and Ni additions provide a hardness increase, as well as a better corrosion resistance. This steel has a good wear resistance. However, its corrosion resistance can only be satisfactory if the parts are hardened, polished and passivated. This steel is well indicated for the production of surgical instruments.


Diameters: 1.00 – 15.00 mm
Tolerances: ISO h8 (up to h5)
Delivery conditions: in cold drawn or ground bars 3m and Coils

Before hardening

Tensile Strength: ca. 750 – 950 N/mm2 , depends on diameter
Heat treatment hardening: 1030 – 1070°C, slow furnace cooling (2-4h) anneal: 700 – 780°C tempering: 100 – 300°C
Hardness Max: 52 HRc
Cutting speed: 40-55 m/min

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