CNC-machined Carbon Steel 1025 is a low-carbon steel (about 0.25% carbon) with slightly more strength than 1020 and good ductility and machinability, suited to general machine parts.
Carbon Steel 1025 is a plain carbon steel with about 0.25% carbon, at the upper end of the low-carbon range.
Carbon Steel 1025 is commonly used for general machine parts, shafts, and fixtures.