ASTM A192 / A192M
This specification2 covers minimum-wall-thickness,seamless carbon steel boiler and superheater tubes for highpressure service.The tubing sizes and thicknesses usually furnished to this specification are 1⁄2 in. to 7 in. [12.7 to 177.8 mm] outside diameter and 0.085 to 1.000 in. [2.2 to 25.4 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification. Mechanical property requirements do not apply to tubing smaller than 1⁄8 in. [3.2 mm] inside diameter or 0.015 in. [0.4 mm] thickness.
Chemical Properties
| Carbon, max | Manganese, max | Phosphorus, max | Sulfur, max | Silicon, max |
|---|---|---|---|---|
| 0.06–0.18 | 0.27–0.63 | 0.035 | 0.035 | 0.25 |
Note: A Determined arithmetically by difference.
Mechanical Properties
| Tensile strength, min, ksi [MPa] | Yield strength, min, ksi [MPa] | Elongation in 2 in. or 50 mm, min, % |
|---|---|---|
| 47 [325] | 26 [180] | 35 |
