Grade 440C martensitic stainless steel can achieve the highest strength, wear resistance and hardness of all the stainless alloys after heat treatment. The metal’s very high carbon content is ...

"In addition to greater material availability, we have also been able to expand our product range for stainless bar grades, which now include 440C, 420, and 17-4 rounds and flats." ...

410 is the basic martensitic grade stainless steel. They are optimised for high hardness, although other properties can be compromised. Corrosion resistance is aided by hardening. Typical applicatiosn ...