AISI 4130 COMPOSITION Designation AISI 4130 UNS number G41300, ~H41300, ~K13047 US name AMS 6345, AMS 6346, AMS 6348, AMS 6350, AMS 6356, AMS S 6758, AMS 6370, AMS 6371 EN name 30CrMo4 EN number 1.7216, 1.7220, 1.7221, 1.7226, 1.7230 AISI 4130, Low alloy steel, Composition C (carbon) 0.28 – 0.33 % Cr (chromium) 0.8 … Continue reading AISI 4130 Composition