ASTM A74
This specification covers cast iron soil pipe and fittings for use in gravity flow plumbing, drain, waste and vent sanitary, and storm water applications. It establishes standards covering material, manufacture, mechanical and chemical properties, coating, test methods, inspection, certification,product markings, dimensions, and dimensional tolerances for extra heavy and service cast iron soil pipe and fittings. These pipe and fittings are not intended for pressure applications as the selection of the proper size for sanitary drain, waste, vent,and storm drain systems allows free air space for gravity drainage.
Chemical Properties
| Phosphorous(P) | Sulfur (S) | Chromium (Cr) | Titanium (Ti) | Aluminum (Al) | Lead (Pb) | Carbon Equivalent |
|---|---|---|---|---|---|---|
| 0.38% Maximum | 0.15 % Maximum | 0.50 % Maximum | 0.10 % Maximum | 0.50 % Maximum | 0.015 % Maximum | 4.10 % Minimum by mass |
