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 317 (UNS S31700/1.4449) Type 303Se (UNS S30323/JIS SUS303Se) Type 316N (UNS S31651)