High Pressure Seamless Carbon Steel boiler pipes ASTM A192
standards
ASTMA192 —American Society of Mechanical Engineers standards
ASMESA192—American Society of Mechanical Engineers standards
Purpose: With a minimumwall thickness for high pressure seamless carbon steel pipe Boiler andSuperheater
The mainproduction steel grades:
A192 SA192negotiated, but also supply other grades of steel.Mechanicalproperties:
| Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| ASTMA192/ASMESA192 | A192/SA192 | ≥325 | ≥180 | ≥35 |
Chemicalcomposition:
| Standard | Grade | Chemical Composition | |||||||||
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | ||
| ASTM A192/ASME SA192 | A192 / SA192 | 0.06～0.18 | ≤0.25 | 0.27～0.63 | ≤0.035 | ≤0.035 | / | / | / | / | |
Material furnished under this specification shall conform to the applicable requirements of the current edition of Specification A 450/A 450M, SA450/SA450Munless otherwise provided
herein.
Manufacture: Tubes shall be made by the seamless process and shall be either hot-finished or cold-finished, as specified.
Heat Treatment
Hot-finished tubes need not be heat treated. Cold finished tubes shall be heat treated after the final cold-finishing at a temperature of 1200°F [650°C] or higher.
The tubes shall have a hardness number not exceeding the following:
Brinell Hardness Number (Tubes Rockwell Hardness Number
0.200 in. [5.1 mm] and over in (Tubes less than 0.200 in.
wall thickness) [5.1 mm] in wall thickness)
137 HB 77 HRB