Steel   Numbers
Steel numbers = 1.15XX.   Non-alloy tool steel


You can compare properties of the 2 steels    


          1.1520             C70U           1.1525             C80U
          1.1535             C90U           1.1545             C105U
          1.1555             C120U  

Steel Numbers 1.15XX. Non-alloy tool steel
Steel classification according to EN 10027-2

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