Abstract: A roller body for a roller for treating a material, preferably a web material, which is cast from an iron base alloy which forms a radially interior zone (5) of the roller body (1) made of grey cast iron (GJS, GJV) and, around the interior zone (5), a circumferential rim zone (6) which includes the outer circumference of the roller body (1) and exhibits a surface hardness which is greater than 400 HV, wherein the circumferential rim zone (6) consists of ribbon grain or superfine ribbon grain pearlite (P) with embedded free graphite, preferably spheroidal graphite (SG) or vermicular graphite (V), or of an intermediate structure (ADI) with spheroidal graphite or vermicular graphite.

Abstract: A cast body, being a tool for forming or original molding a work piece, or a transfer member for transferring a force or torque onto a tool which contacts the work piece during forming or original molding, wherein the cast body is cast from an iron base alloy which forms an interior zone of the cast body made of grey cast iron and, around the interior zone, a circumferential rim zone which includes the outer circumference of the cast body and has a surface hardness which is greater than 400 HV, wherein the circumferential rim zone consists of ribbon grain or superfine ribbon grain pearlite with embedded free graphite, preferably spheroidal graphite or vermicular graphite, or of an intermediate structure with spheroidal graphite or vermicular graphite.

Abstract: A roller body for a roller for treating a material, preferably a web material, which is cast from an iron base alloy which forms a radially interior zone (5) of the roller body (1) made of grey cast iron (GJS, GJV) and, around the interior zone (5), a circumferential rim zone (6) which includes the outer circumference of the roller body (1) and exhibits a surface hardness which is greater than 400 HV, wherein the circumferential rim zone (6) consists of ribbon grain or superfine ribbon grain pearlite (P) with embedded free graphite, preferably spheroidal graphite (SG) or vermicular graphite (V), or of an intermediate structure (ADI) with spheroidal graphite or vermicular graphite.

Abstract: A method for manufacturing a roller body, wherein pipe sections, each made of steel having a carbon equivalent of at least 0.45 and a wall thickness of at least 130 mm each are arranged axially next to each other and connected to each other by means of electron-beam welding.