The 15CrMo steel pipe has heat-resistant, high hot strength (δb ≥ 440MPa) and oxidation resistance at high temperatures feature. and also has a certain resistance to hydrogen corrosion. As the alloy steel pipe contains a higher content of Cr, C, and other alloying elements, the steel hardened tendency obvious, poor welding.
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15CrMoG GB/T5310 alloy steel boiler tube 1" to 26" XS. XXS 9-12M
GB/T5310 15CrMoG Alloy Steel Tube
15CrMoG alloy tube of the principles of the purified hydrogen at 300-500 ℃, the hydrogen to be purified is passed through one side of the 15CrMoG alloy tube, the hydrogen is adsorbed on 15CrMoG alloy wall, palladium 4d electron shell lacks twoelectronics, it can with the hydrogen generating unstable chemical bonds (palladium and hydrogen, this reaction is reversible), palladium, hydrogen is ionized proton whose radius is 1.5 × 1015m, while the lattice constant of palladium 3.88x 10-10M (20 ° C time), it can be through 15CrMoG alloy tube role of palladium proton combined with electronic and re-formation of the hydrogen molecules to escape from the other side of the 15CrMoG alloy tube. In the surface of 15CrMoG alloy tube, not dissociated gas impermeable, can therefore be to use 15CrMoG alloy tube to obtain high purity hydrogen.
Chemical Compositions(%) Of 15CrMoG：
| Elements | Data |
| Carbon | 0.12-0.18 |
| Silicon | 0.17-0.37 |
| Manganese | 0.40-0.70 |
| Phosphorus(max) | 0.03 |
| Sulfur(max) | 0.03 |
| Chromium | 0.80-1.10 |
| Molybdenum | 0.40-0.55 |
| Cuprum(max) | 0.2 |
| Nickel(max) | 0.3 |
Mechanical Properties Of 15CrMoG：
| Yield Strength (Mpa) | 450-600 |
| Tensile Strength (Mpa) | 270 |
| Elongation (%) | 22 |
The W.T. Tolerance Of 15CrMoG：
| W.T.(S) | Tolerance of W.T. | |
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |
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