Home / Metals / Special Alloy Steel / 34CrMo4 – AISI 4135 – DIN 1.7220 Chromium-Molybdenum Alloy Structural Steel 34CrMo4 – AISI 4135 – DIN 1.7220 Chromium-Molybdenum Alloy Structural Steel Get A Free Quote Now! Related products Type 305 (UNS S30500/1.4303) Type 304L (UNS S30403/1.4307) Type 321 (UNS S32100/1.4541)