Compressor valves made out of 420 last longer and are very reliable. At BSS we supply 420 steels that are usually hardened in the range of 42/46 and 48/52 HRC. We would offer 420 material in tempered and hardened conditions, ready for the laser treatment. Being extremely flat our steel sheets provide great efficiency during further production. Magnetic properties of our 420 ss provides safety and control in further tools applications.