15CrMoG high-pressure boiler tube is a commonly used steel material that is widely used in industrial fields such as boilers and pressure vessels in high-temperature and high-pressure environments.
15CrMoG alloy steel pipe is a high-temperature alloy steel specified in the Chinese GB5310 standard. Its main chemical composition is: carbon (C) content is 0.12-0.18, silicon (Si) content is 0.17-0.37, manganese (Mn) content is 0.40-0.70, The molybdenum (Mo) content is 0.25-0.35, the chromium (Cr) content is 0.80-1.10, the cobalt (Co) content is ≤0.020, the sulfur (S) content is ≤0.020, and the phosphorus (P) content is ≤0.020.
The production of 15CrMoG high-pressure alloy pipes generally adopts hot rolling, cold rolling or cold drawing processes. First, the quality of raw materials is inspected through pre-furnace inspection to ensure that they meet the requirements of relevant standards.
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| Specification | Description | Value |
|---|---|---|
| Material | Carbon Steel | 15CrMoG |
| Standard | GB 5310 | - |
| Application | Boiler Tubes | - |
| Temperature Range | High-Temperature Service | - |
| Chemical Composition | Carbon (C) | ≤ 0.15% |
| Silicon (Si) | ≤ 0.55% | |
| Manganese (Mn) | ≤ 0.60% | |
| Phosphorus (P) | ≤ 0.035% | |
| Sulfur (S) | ≤ 0.035% | |
| Chromium (Cr) | 0.80-1.10% | |
| Molybdenum (Mo) | 0.40-0.55% | |
| Mechanical Properties | Yield Strength | ≥ 235 MPa |
| Tensile Strength | 440-630 MPa | |
| Elongation | ≥ 21% | |
| Impact Test | ≥ 47 J (at -20°C) | |
| Size Range | Outer Diameter | 10.3-1219.2 mm |
| Wall Thickness | 1-40 mm | |
| Tolerance | Outer Diameter | ±1% |
| Wall Thickness | ±12.5% |
GB 5310 Seamless Boiler Pipe Specification
Heat treatment:
980 ℃～1 020 ℃,Normalizing,980 °C ~ 1 020 °C normalizing, when the wall thickness is greater than 30 mm, forced cooling; 720 °C ~ 760 °C tempering.
Application
Maximum service temperature: it is applied to high and medium pressure boiler steam pipes, headers, superheater pipes with wall temperature of 540 ° C, forgings and elastic elements with steam parameters of 510ec.
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