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 304 (UNS S30400/1.4301) Type 303 (UNS S30300/1.4305) Type 347 (UNS S34700/1.4550)