ASME SA209 T1a Boiler Tube
ASTM A209 / A209M, ASME SA209 T1, T1a, T1b is the standard applicable to seamless carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes.
| Steel Grade | C | Si | Mn | S | P | Cr | Mo |
| 15 MoG | 0.12-0.20 | 0.17-0.37 | 0.40-0.80 | 0.015 | 0.025 | 0.25-0.35 |
| Grade | Tensile strength | Yield point(Mpa) | Elongation(%) | Impact(J) |
| (Mpa) | not less than | not less than | not less than | |
| 15MoG | 450-600 | 270 | 22/20 | 40/27 |
| 20MoG | 415-665 | 220 | 22/20 | 40/27 |







.jpg)