Material composition and application fields of ASTM A299 Gr.B boiler steel

ASTM A299 Gr.B boiler steel is usually used to manufacture high-temperature and high-pressure boilers and pressure vessels. The main application areas include:
1. Petrochemical industry
2. Electric power industry
3. Chemical industry
4. Boiler manufacturing industry
5. Pressure vessel manufacturing industry
6. Nuclear energy industry and other fields.

The typical chemical composition of ASTM A299 Gr.B boiler steel usually includes the following elements and their content ranges (percentage):

- Carbon (C): 0.28% max
- Manganese (Mn): 0.90-1.50%
- Silicon (Si): 0.15-0.40%
- Phosphorus (P): 0.035% max.
- Sulfur (S): 0.035% max.
- Nickel (Ni): 0.40-0.70%
- Molybdenum (Mo): 0.45-0.60%
- Niobium (Nb): 0.12-0.30%
- Titanium (Ti): 0.01-0.03%
- Niobium (V): 0.03% max

Proper control of these chemical compositions ensures that ASTM A299 Gr.B boiler steel has the required mechanical properties and corrosion resistance and is suitable for boiler and pressure vessel manufacturing for high temperature and high pressure applications.

Pre: Application fields of API 5L PSL1 Grade B steel plate

Next: ASTM A299 Gr.B boiler steel metallographic structure and microstructural characteristics