- Descrição
2507 placa de aço inoxidável (also known as Super Duplex Stainless Steel) is a high-performance duplex alloy combining austenitic and ferritic microstructures. It is designed for extremely aggressive environments where both high strength and outstanding corrosion resistance are required. Compared with standard duplex grades like 2205, 2507 offers significantly improved resistance to chloride pitting, corrosão em fendas, e rachadura de corrosão do estresse.
Composição Química de 2507 Placa de aço inoxidável
The balanced high chromium, níquel, and molybdenum content gives 2507 its super duplex performance.
| Elemento | Contente (%) |
|---|---|
| Cromo (Cr) | 24.0–26.0 |
| Níquel (Em) | 6.0–8,0 |
| Molibdênio (Mo) | 3.0–5.0 |
| Azoto (N) | 0.24–0.32 |
| Carbono (C) | ≤ 0.03 |
| Manganês (Mn) | ≤ 1.20 |
| Silício (E) | ≤ 0.80 |
| Fósforo (P) | ≤ 0.035 |
| Enxofre (S) | ≤ 0.02 |
| Ferro (Fé) | Equilíbrio |
Propriedades Mecânicas de 2507 Aço inoxidável
2507 stainless steel provides very high strength while maintaining good toughness and corrosion resistance.
| Propriedade | Valor típico |
|---|---|
| Resistência à tracção | 800–1000 MPa |
| Força de rendimento | ≥ 550 MPa |
| Alongamento | ≥ 15–25% |
| Dureza | ≤ 300 HB |
| Densidade | 7.8 g/cm³ |
Principais recursos de desempenho
1. Excelente resistência à corrosão
2507 stainless steel is designed for extreme corrosion environments, offering superior resistance to:
- Seawater and marine environments
- Chloride-rich chemical solutions
- Acidic and oxidizing conditions
- Offshore oil and gas systems
Its pitting resistance equivalent number (MADEIRA) is very high, making it suitable for long-term seawater exposure.
2. Alta resistência (Dual Phase Structure)
The duplex structure (ferrita + austenitas) gives 2507:
- Nearly double the strength of 304/316 aço inoxidável
- Excellent load-bearing capacity
- Reduced material thickness for same strength requirements
- Boa resistência à fadiga
3. Resistance to Stress Corrosion Cracking
Unlike standard austenitic stainless steels, 2507 has excellent resistance to chloride stress corrosion cracking, making it ideal for offshore and seawater applications.
4. Good Thermal Conductivity and Stability
Compared with austenitic grades, 2507 ofertas:
- Better thermal conductivity
- Lower thermal expansion
- Stable performance under temperature variation
Aplicações comuns de 2507 Placa de aço inoxidável
2507 stainless steel plate is widely used in highly corrosive and high-strength engineering environments.
As aplicações típicas incluem:
- Offshore oil and gas platforms
- Seawater desalination systems
- Marine engineering structures
- Equipamento de processamento químico
- Heat exchangers and pressure vessels
- Flue gas desulfurization (FGD) sistemas
- Pulp and paper industry equipment
- Subsea pipelines and components
- High-pressure seawater systems
- Bombas, válvulas, and fittings
2507 Duplex vs 2205 Aço Inoxidável Duplex
| Propriedade | 2507 Aço inoxidável | 2205 Aço inoxidável |
|---|---|---|
| Tipo | Superduplex | Dúplex |
| Resistência à corrosão | Mais alto | Bom |
| Força | Mais alto | Alto |
| PREN Value | ~40+ | ~35 |
| Resistência ao cloreto | Excelente | Bom |
| Uso típico | Severe offshore/chemical | General marine/industrial |
