2205 Blatt
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. Gegenüber 2507 super duplex stainless steel, 2205 offers a more economical solution while still providing excellent mechanical strength and corrosion resistance for most engineering applications.
- Beschreibung
2205 duplex stainless steel sheet is one of the most widely used duplex stainless steels, kombinieren austenitic and ferritic phases in its microstructure. This dual-phase structure gives it a unique balance of hohe Festigkeit, ausgezeichnete Korrosionsbeständigkeit, and good stress corrosion cracking resistance.
Chemische Zusammensetzung von 2205 Edelstahl
2205 is designed with higher chromium and molybdenum content compared to standard austenitic grades.
| Element | Inhalt (%) | Funktion |
|---|---|---|
| Chrom (Cr) | 21–23 % | Korrosionsbeständigkeit |
| Nickel (In) | 4.5–6,5 % | Stabilizes duplex structure |
| Molybdän (Mo) | 2.5–3.5% | Pitting corrosion resistance |
| Stickstoff (N) | 0.08–0,20 % | Strength and stability |
| Kohlenstoff (C) | ≤0,03 % | Reduces carbide formation |
| Mangan (Mn) | ≤2.0% | Verbessert die Zähigkeit |
Wichtige Leistungsmerkmale von 2205 Blatt
1. Hohe Festigkeit
2205 duplex stainless steel has approximately:
- 2× the strength of 304 Edelstahl
This allows:
- Thinner material use
- Reduced structural weight
- Higher load-bearing capacity
2. Ausgezeichnete Korrosionsbeständigkeit
- Starke Beständigkeit gegenüber Chloridumgebungen
- 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 vs 2507 Duplex-Edelstahl
2507 (Super-Duplex-Edelstahl) is the higher-grade version of 2205.
Hauptunterschiede
| Eigentum | 2205 Duplex | 2507 Super-Duplex |
|---|---|---|
| Chrom (Cr) | 21–23 % | 24–26 % |
| Nickel (In) | 4.5–6,5 % | 6–8 % |
| Molybdän (Mo) | 2.5–3.5% | 3–5 % |
| Stärke | Hoch | Sehr hoch |
| Korrosionsbeständigkeit | Exzellent | Vorgesetzter |
| Pitting resistance | Gut | Outstanding |
| Cost level | Mäßig | Höher |
Zusammenfassung des Leistungsvergleichs
Vorteile von 2205
- Excellent cost-performance balance
- High strength suitable for most industrial use
- Strong resistance to chloride corrosion
- Widely available and easy to fabricate
Vorteile von 2507
- Higher corrosion resistance in extreme environments
- Better performance in offshore and seawater systems
- Higher mechanical strength
- Suitable for highly aggressive chemical conditions
Typische Anwendungen
2205 Duplex-Edelstahlblech
- Ausrüstung für die chemische Verarbeitung
- Meeresumgebungen
- Druckbehälter
- Öl- und Gaspipelines
- Wärmetauscher
2507 Super Duplex Stainless Steel Sheet
- Offshore-Plattformen
- Desalination plants
- Highly corrosive chemical systems
- Deep-sea engineering equipment
