PURPOSE: To improve resistances to wear and trouble by combining the composition of components and distribution of hardness of an outer layer with the specific conditions of a core material and joining the outer layer to the core material into a prescribed strength.

CONSTITUTION: A high Cr cast iron roll formed by metallurgically joining an outer layer of high Cr cast iron to a core material of cast, forged steel having a ≥55kg/mm2 strength and a ≥1 elongation. Said high Cr cast iron contains in wt%, 2.5W3.5% C, 0.5W1.5% Si, 0.4W1.5% Mn, 0.5W3% Ni, 8W25% Cr, 1W5% Mo, and the balance Fe with inevitable impurities. The molten metal of this high Cr cast iron is poured onto the outer circumference of core material and is metallurgically joined to the core material, to form the outer layer. And the joining strength of a boundary part between the outer layer and the core material is at least ≥ the lower strength of either of the outer layer or the core material. Further, the outer layer has a ≥90 (Shore hardness) surface hardness.