Overview
This table details the chemical composition of different niobium grades (R04200, R04210, R04251, R04261). Precise control of element contents ensures niobium alloys meet performance requirements for applications in aerospace, electronics, and high – temperature industries.
Chemical Composition Details（wt%）
| Element | R04200 | R04210 | R04251 | R04261 |
| Carbon | 0.01 | 0.01 | 0.01 | 0.01 |
| Nitrogen | 0.01 | 0.01 | 0.01 | 0.01 |
| Oxygen | 0.015 | 0.025 | 0.015 | 0.025 |
| Hydrogen | 0.0015 | 0.0015 | 0.0015 | 0.0015 |
| Zirconium | 0.02 | 0.02 | 0.8 to 1.2 | 0.8 to 1.2 |
| Tantalum | 0.1 | 0.3 | 0.1 | 0.5 |
| Iron | 0.005 | 0.01 | 0.005 | 0.01 |
| Silicon | 0.005 | 0.005 | 0.005 | 0.005 |
| Tungsten | 0.03 | 0.05 | 0.03 | 0.05 |
| Nickel | 0.005 | 0.005 | 0.005 | 0.005 |
| Molybdenum | 0.01 | 0.02 | 0.01 | 0.05 |
| Hafnium | 0.02 | 0.02 | 0.02 | 0.02 |
| Titanium | 0.02 | 0.03 | 0.02 | 0.03 |
Key Features by Grade
- R04200 / R04210: Lower alloying element contents, suitable for applications requiring high purity and basic mechanical properties.
- R04251 / R04261: With controlled Zirconium (0.8–1.2%) and adjusted Tantalum/Molybdenum, optimized for high – strength and high – temperature resistance scenarios.
Application Guidance
- Aerospace: R04251/R04261 can be used in engine components due to their enhanced high – temperature performance.
- Electronics: R04200/R04210 are preferred for semiconductor – related parts for their purity.
- Industrial Manufacturing: All grades can be selected based on specific strength, corrosion – resistance, and temperature requirements.
Quality Assurance
Strict compliance with composition standards ensures consistent performance across different niobium grades. Suitable for quality – critical projects, providing a reliable material basis for engineering design.