2205 Feuille
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. Par rapport à 2507 super duplex stainless steel, 2205 offers a more economical solution while still providing excellent mechanical strength and corrosion resistance for most engineering applications.
- Description
2205 duplex stainless steel sheet is one of the most widely used duplex stainless steels, combinant austenitic and ferritic phases in its microstructure. This dual-phase structure gives it a unique balance of haute résistance, excellente résistance à la corrosion, and good stress corrosion cracking resistance.
Composition chimique de 2205 Acier inoxydable
2205 is designed with higher chromium and molybdenum content compared to standard austenitic grades.
| Élément | Contenu (%) | Fonction |
|---|---|---|
| Chrome (Cr) | 21–23% | Résistance à la corrosion |
| Nickel (Dans) | 4.5–6,5% | Stabilizes duplex structure |
| Molybdène (Mo) | 2.5–3.5% | Pitting corrosion resistance |
| Azote (N) | 0.08–0,20% | Strength and stability |
| Carbone (C) | ≤0,03% | Reduces carbide formation |
| Manganèse (Mn) | ≤2.0% | Améliore la ténacité |
Key Performance Characteristics of 2205 Feuille
1. Haute résistance
2205 duplex stainless steel has approximately:
- 2× the strength of 304 acier inoxydable
This allows:
- Thinner material use
- Reduced structural weight
- Higher load-bearing capacity
2. Excellente résistance à la corrosion
- Forte résistance aux environnements chlorés
- 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 contre 2507 Acier inoxydable duplex
2507 (Super Duplex Stainless Steel) is the higher-grade version of 2205.
Différences clés
| Propriété | 2205 Duplex | 2507 Super-Duplex |
|---|---|---|
| Chrome (Cr) | 21–23% | 24–26% |
| Nickel (Dans) | 4.5–6,5% | 6–8% |
| Molybdène (Mo) | 2.5–3.5% | 3–5% |
| Force | Haut | Très élevé |
| Résistance à la corrosion | Excellent | Supérieur |
| Pitting resistance | Bien | Remarquable |
| Cost level | Modéré | Plus haut |
Performance Comparison Summary
Avantages de 2205
- Excellent cost-performance balance
- High strength suitable for most industrial use
- Strong resistance to chloride corrosion
- Widely available and easy to fabricate
Avantages de 2507
- Higher corrosion resistance in extreme environments
- Better performance in offshore and seawater systems
- Higher mechanical strength
- Suitable for highly aggressive chemical conditions
Applications typiques
2205 Tôle d'acier inoxydable duplex
- Équipement de traitement chimique
- Milieux marins
- Appareils à pression
- Oléoducs et gazoducs
- Échangeurs de chaleur
2507 Super Duplex Stainless Steel Sheet
- Plateformes offshore
- Usines de dessalement
- Highly corrosive chemical systems
- Deep-sea engineering equipment
