Home / Metals / Special Alloy Steel / 20NiCrMo2-2, 1.6523 (21NiCrMo2), AISI 8620 Alloy Carburizing Bearing Steel 20NiCrMo2-2, 1.6523 (21NiCrMo2), AISI 8620 Alloy Carburizing Bearing Steel Get A Free Quote Now! Description Description Get A Free Quote Now! Your Name (required) Your Email (required) Subject Your Message Related products Type 303 (UNS S30300/1.4305) Type 347 (UNS S34700/1.4550) Type 304J1