| Standard: ASTM A192 | |||||
| Seamless Carbon Steel Boiler Tubes for High-Presure Service | |||||
| Applications: for Boilers,Superheaters,Heat-Exchangers, high-pressure | |||||
| Size range: 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 | ||||
| Mechanical Properties | |||||
| Tensil Streghth: min ksi[Mpa] 47[325] | |||||
| Yield Point: min ksi[Mpa] 26[180] | |||||
| Elongation: ≥35% | |||||
| Hardness | |||||
| 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) | |||||
| 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 | |||
Manufacture:
Tubes are manufactured by seamless process and both hot finished and cold finished are applicable.
Heat treatment:
Hot finished tubes need not be heat treated.
Cold Finished tubes are heat treated after the final cold finishing pass at a temperature of 1200℉(650℃) or higher
product name:heat exchanger steel pipes
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