This specification covers nonstandard as-forged fittings,valve components, and parts for glass-lined piping and pressure vessel service. Mechanical properties are certified on the basis of test material subjected to heat treatments to simulate glass-coating operations.
| Element | Composition, % |
|---|---|
| Carbon, max | 0.20 |
| Manganese, max | 0.90 |
| Phosphorus, max | 0.05 |
| Silicon, max | 0.35 |
| Sulfur, max | 0.05 |
| Titanium, min | 4× carbon content |
| Titanium, max. | 1.00 |
| Class I | |
|---|---|
| Tensile strength, min, ksi [MPa] | 55 [380] |
| Yield strength,A min, ksi [MPa] | 25 [175] |
| Elongation in 2 in. or 50 mm, min, % | 22 |
| Reduction of area, min, % | 35 |
A. Determined by either the 0.2 % offset method or the 0.5 % extension-under-load method.