ASTM A 504 - 93 (R1999) Standard Specification for Wrought Carbon Steel Wheels

American Society for Testing and Materials (ASTM). Current edition approved Dec. 15, 1993. Published February 1994. Originally published as A 504 – 64 to replace A 57 and A
186. Combined with A 25 in this dition. Last previous edition A 504 –
89. Reapproved 1999. 8 p. This specification covers one-wear, two-wear, and multiple-wear wrought carbon steel wheels for locomotives and cars, designated Class U, untreated, and Classes L, A, B, and C, heat-treated, wheels.