The hardness of Ni-hard cast iron series is more than HRC56. Our materials conform to GB/T 8263-1999, AS 2027/Ni-Cr1-550, AS 2027/Ni-Cr2-500, AS 2027/Ni-Cr4-500, AS 2027/Ni-Cr4-600, AS 2027/Ni-Cr4-630, ASTM A 532 1-A, B, C, D, ASTM A 532 2-A, B, C, D, E, ASTM A 532 3-A.
