Prime hot forged tool steel round bar 1.Steel grade: ... ,252mm,272mm Specification: SKD61(H13), SAE8620 Chemical: C: 0.34/0.40; Si: 0.80/1.20; Mn: 0 ... ≤ 0.020; Cr: 4.80/5.50; Mo≤ 1.00/1.50; V: 0.80/1.15; Cu: ≤ 0 ... .25; Ni: ≤ 0.25 Delivery condition: Hot forged, UT tested, annealed and rough turned UT test standard ... other size below 400mm according your request Prime hot forged tool steel round bar