2205 Lembaran
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. Berbanding dengan 2507 keluli tahan karat super dupleks, 2205 offers a more economical solution while still providing excellent mechanical strength and corrosion resistance for most engineering applications.
- Penerangan
2205 duplex stainless steel sheet is one of the most widely used duplex stainless steels, menggabungkan austenitic and ferritic phases in its microstructure. This dual-phase structure gives it a unique balance of kekuatan tinggi, rintangan kakisan yang sangat baik, and good stress corrosion cracking resistance.
Komposisi Kimia bagi 2205 Keluli Tahan Karat
2205 is designed with higher chromium and molybdenum content compared to standard austenitic grades.
| unsur | kandungan (%) | Fungsi |
|---|---|---|
| Chromium (Cr) | 21–23% | Rintangan kakisan |
| Nikel (Dalam) | 4.5–6.5% | Stabilizes duplex structure |
| Molibdenum (Mo) | 2.5–3.5% | Pitting corrosion resistance |
| Nitrogen (N) | 0.08–0.20% | Strength and stability |
| Karbon (C) | ≤0.03% | Reduces carbide formation |
| Mangan (Mn) | ≤2.0% | Meningkatkan ketangguhan |
Key Performance Characteristics of 2205 Lembaran
1. Kekuatan Tinggi
2205 duplex stainless steel has approximately:
- 2× the strength of 304 keluli tahan karat
This allows:
- Thinner material use
- Reduced structural weight
- Higher load-bearing capacity
2. Rintangan Kakisan Cemerlang
- Rintangan kuat terhadap persekitaran klorida
- 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 lwn 2507 Keluli Tahan Karat Dupleks
2507 (Keluli Tahan Karat Super Dupleks) is the higher-grade version of 2205.
Perbezaan utama
| Harta benda | 2205 Dupleks | 2507 Super Dupleks |
|---|---|---|
| Chromium (Cr) | 21–23% | 24–26% |
| Nikel (Dalam) | 4.5–6.5% | 6–8% |
| Molibdenum (Mo) | 2.5–3.5% | 3–5% |
| kekuatan | tinggi | Sangat Tinggi |
| Rintangan kakisan | Cemerlang | unggul |
| Pitting resistance | bagus | Cemerlang |
| Cost level | Sederhana | Lebih tinggi |
Ringkasan Perbandingan Prestasi
Kelebihan daripada 2205
- Excellent cost-performance balance
- High strength suitable for most industrial use
- Strong resistance to chloride corrosion
- Widely available and easy to fabricate
Kelebihan daripada 2507
- Higher corrosion resistance in extreme environments
- Better performance in offshore and seawater systems
- Higher mechanical strength
- Suitable for highly aggressive chemical conditions
Aplikasi Biasa
2205 Lembaran Keluli Tahan Karat Dupleks
- Peralatan pemprosesan kimia
- Persekitaran marin
- Kapal tekanan
- Saluran paip minyak dan gas
- Penukar haba
2507 Super Duplex Stainless Steel Sheet
- Platform luar pesisir
- Tumbuhan penyahgaraman
- Highly corrosive chemical systems
- Deep-sea engineering equipment
