2205 Foglio
2205 duplex stainless steel sheet is a high-strength, corrosion-resistant material with a balanced duplex microstructure, making it one of the most widely used stainless steels in industrial environments. Rispetto a 2507 acciaio inossidabile superduplex, 2205 offers a more economical solution while still providing excellent mechanical strength and corrosion resistance for most engineering applications.
- Descrizione
2205 duplex stainless steel sheet is one of the most widely used duplex stainless steels, combinando austenitic and ferritic phases in its microstructure. This dual-phase structure gives it a unique balance of alta resistenza, eccellente resistenza alla corrosione, and good stress corrosion cracking resistance.
Composizione chimica di 2205 Acciaio inossidabile
2205 is designed with higher chromium and molybdenum content compared to standard austenitic grades.
| Elemento | Contenuto (%) | Funzione |
|---|---|---|
| Cromo (Cr) | 21–23% | Resistenza alla corrosione |
| Nichel (In) | 4.5–6,5% | Stabilizes duplex structure |
| Molibdeno (Mo) | 2.5–3.5% | Pitting corrosion resistance |
| Azoto (N) | 0.08–0,20% | Strength and stability |
| Carbonio (C) | ≤0,03% | Reduces carbide formation |
| Manganese (Mn) | ≤2.0% | Improves toughness |
Caratteristiche prestazionali chiave di 2205 Foglio
1. Alta resistenza
2205 duplex stainless steel has approximately:
- 2× the strength of 304 acciaio inossidabile
This allows:
- Thinner material use
- Reduced structural weight
- Maggiore capacità di carico
2. Eccellente resistenza alla corrosione
- Strong resistance to chloride environments
- High resistance to pitting and crevice corrosion
- Suitable for marine and chemical applications
3. Good Stress Corrosion Cracking Resistance
Compared to austenitic stainless steels:
- Much better resistance in chloride-rich environments
- Stable performance under stress and temperature variation
4. Balanced Duplex Microstructure
- ~50% austenite
- ~50% ferrite
This structure provides:
- Strength from ferrite
- Toughness from austenite
2205 contro 2507 Acciaio inossidabile duplex
2507 (Acciaio inossidabile super duplex) is the higher-grade version of 2205.
Differenze chiave
| Proprietà | 2205 Duplex | 2507 Super duplex |
|---|---|---|
| Cromo (Cr) | 21–23% | 24–26% |
| Nichel (In) | 4.5–6,5% | 6–8% |
| Molibdeno (Mo) | 2.5–3.5% | 3–5% |
| Forza | Alto | Molto alto |
| Resistenza alla corrosione | Eccellente | Superiore |
| Pitting resistance | Bene | Eccezionale |
| Cost level | Moderare | Più alto |
Performance Comparison Summary
Vantaggi di 2205
- Excellent cost-performance balance
- High strength suitable for most industrial use
- Strong resistance to chloride corrosion
- Widely available and easy to fabricate
Vantaggi di 2507
- Higher corrosion resistance in extreme environments
- Better performance in offshore and seawater systems
- Higher mechanical strength
- Suitable for highly aggressive chemical conditions
Applicazioni tipiche
2205 Lamiera duplex in acciaio inossidabile
- Attrezzature per il trattamento chimico
- Ambienti marini
- Recipienti a pressione
- Oleodotti e gasdotti
- Scambiatori di calore
2507 Super Duplex Stainless Steel Sheet
- Piattaforme offshore
- Impianti di dissalazione
- Highly corrosive chemical systems
- Deep-sea engineering equipment
