GB 18MnMoNbg GB 713
Boiler and Pressure Vessel Steel Product Introduction
In the 1890s, Chinese engineers began to develop a new type of boiler steel that was more resistant to high temperatures and pressures, known as GB 18MnMoNbg GB 713. The steel consisted of conventional steel, which was carbon-rich, as well as manganese, chromium, and other metals. This combination of materials was designed to make the steel more resistant to heat and corrosion, making it far more durable and resilient than traditional cast iron boilers.
Our company has steel products billets, steel products, hot-rolled sheets, cold-drawn sheets, seamless steel pipes, steel bars and other products. GB 18MnMoNbg GB 713 has a good reputation in the market, high-quality products, and thoughtful service in the steel industry. GB 18MnMoNbg GB 713 has complete specifications, and the products are widely used in aerospace, petrochemical, and construction projects, with low requirements for products, easy processing and low dimensional accuracy requirements. And provide cutting, bending, welding, drilling, and other processing services.
Application: Carbon steel and low alloy steel plate for boiler.
Heat treated: 1867°C - 1528°C.
Boiler and Pressure Vessel Steel Product Details
DIN 1.8825 DIN EN 10025-4 Chemical Element
What is DIN 1.8825 DIN EN 10025-4 made of? DIN 1.8825 DIN EN 10025-4 element content, DIN 1.8825 DIN EN 10025-4 composition, DIN 1.8825 DIN EN 10025-4 cast analysis
| Element | Min | Max | Similar |
|---|---|---|---|
| V+Nb+Ti | - | 0.1400 | - |
| V | - | 0.1200 | - |
| Ti | - | 0.0500 | - |
| Si | - | 0.5000 | - |
| S | - | 0.0300 | - |
| P | - | 0.0350 | - |
| Ni | - | 0.3000 | - |
| Nb | - | 0.0500 | - |
| N | - | 0.0200 | - |
| Mo | - | 0.2000 | - |
| Mn | - | 1.7000 | - |
| Cr+Cu+Mo | - | 0.6000 | - |
| Cr | - | - | - |
| C | - | 0.1600 | - |
| Al | 0.0200 | - | - |
| V | - | 0.1400 | - |
| Ti | - | 0.0600 | - |
| Si | - | 0.5500 | - |
| S | - | 0.0300 | - |
| P | - | 0.0350 | - |
| Ni | - | 0.8500 | - |
| Nb | - | 0.0600 | - |
| N | - | 0.0270 | - |
| Mo | - | 0.2300 | - |
| Mn | - | 1.8000 | - |
| Cu | - | 0.6000 | - |
| Cr | - | 0.3500 | - |
| CEV | - | 0.4300 | - |
| C | - | 0.1800 | - |
| Al | 0.0150 | - | - |
DIN 1.8825 DIN EN 10025-4 Mechanical Properties
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 286 (≥) | 598 (≥) | 23 | 34 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 |
DIN 1.8825 DIN EN 10025-4 Physical Properties
The DIN 1.8825 DIN EN 10025-4 material physical properties shall comply with the values given in the following table.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 34 | - | - | 0.24 | - | |||
| 538 | 567 | - | 32.3 | 311 | - | ||
| 737 | - | 24 | 33.2 | 111 | 443 |
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