| Standard:ASTM A192 |
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| SeamlessCarbon Steel Boiler Tubes for High-Presure Service |
| Applications:for Boilers,Superheaters,Heat-Exchangers, high-pressure |
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| Sizerange: O.D.:6-168mm W.T.:1-15mm L:max12000mm |
Steel Grade and Chemical Compositions:
| C | 0.06-0.18 |
| Mn | 0.27-0.63 |
| P | ≤0.035 |
| S | ≤0.035 |
| Si | ≤0.25 |
| MechanicalProperties |
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| TensilStreghth: min ksi[Mpa] 47[325] |
| YieldPoint: min ksi[Mpa] 26[180] |
| Elongation: ≥35% |
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| Hardness |
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| Brinell Hardness | Rockwell Hardness Numbe |
| WT≥0.200in(5.1mm) | WT<0.200in(5.1mm) |
| 137HRB | 77HRB |
| Tolerance for OD and WT(SA-450/SA-450M) |
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| OD in(mm) | + | - | WT in(mm) | + | - |
| <1''(25.4) | 0.10 | 0.10 | ≤1.1/2''(38.1) | 20% | 0 |
| 1''~1.1''(25.4~38.1) | 0.15 | 0.15 | >1.1/2''(38.2) | 22% | 0 |
| >1.1/2''~<2''(38.1~50.8 | 0.20 | 0.20 |
| 2''~<2.1/2''(50.8~63.5) | 0.25 | 0.25 |
| 2.1/2''~<3''(63.5~76.2) | 0.30 | 0.30 |
| 3''~<4''(76.2~101.6) | 0.38 | 0.38 |
| 4''~<7.1/2''(101.6~190.5) | 0.38 | 0.64 |
| >7.1/2~9''(190.5~228.6) | 0.38 | 1.14 |
