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 309 (UNS S30900/1.4828) Type 304L (UNS S30403/1.4307) Type 316L (UNS S31603/1.4404)