ASTM A192 High-Pressure Seamless Carbon Steel Boiler and Superheater Tubes are generally available in sizes and thicknesses to this specification in 1⁄2-inch to 7-inch outside diameters and 0.085 to 1.000-inch outside diameters.
ASTM A192 High-Pressure Seamless Boiler And Superheater Tubes
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 3.2mm--25.4 mm.
Outer diameter (OD): 12.7mm--177.8 mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
Chemical Composition of ASTM A192,ASME SA192 Boiler And Superheater Tubes
| Carbon, % | 0.06–0.18 |
| Manganese, % | 0.27–0.63 |
| Phosphorus, max, % | 0.035 |
| Sulfur, max, % | 0.035 |
| Silicon, max, % | 0.25 |
Mechanical Properties of ASTM A192,ASME SA192 Boiler And Superheater Tubes
| Tensile strength, min, ksi [MPa] | 47 [325] |
| Yield strength, min, ksi [MPa] | 26 [180] |
| Elongation in 2 in. or 50 mm, min, % | 35 |
| Brinell Hardness Number (Tubes 0.200 in. [5.1 mm] and over in wall thickness) | 137 HBW |
| Rockwell Hardness Number (Tubes less than 0.200 in.[5.1 mm] in wall thickness) | 77 HRBW |
Note: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.
Tolerances of Length
| Method of Manufacture |
Outside Diameter, in. [mm] |
Cut Length,in. [mm] | |
| Over | Under | ||
| Seamless, hot-finished | All sizes | 3 ⁄ 16 [5] | 0 [0] |
| Seamless, cold-finished | Under 2 [50.8] | 1 ⁄ 8 [3] | 0 [0] |
| 2 [50.8] and over | 3 ⁄ 16 [5] | 0 [0] | |
| 2 [50.8] and over | 3 ⁄ 16 [5] | 0 [0] | |
