Steel, Investment Castings, 0.95Cr - 0.20Mo (0.25-0.35C) (SAE 4130 Mod), Normalized or Normalized and Tempered AMS5336F

These castings have been used typically for small structural parts of intricate design requiring heat treatment to minimum tensile strengths up to 150 ksi (1034 MPa), but usage is not limited to such applications.