- 説明
2507 ステンレス鋼板 (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, 隙間腐食, ストレス腐食亀裂.
の化学組成 2507 ステンレス鋼板
The balanced high chromium, ニッケル, and molybdenum content gives 2507 its super duplex performance.
| 要素 | コンテンツ (%) |
|---|---|
| クロム (Cr) | 24.0–26.0 |
| ニッケル (で) | 6.0–8.0 |
| モリブデン (モー) | 3.0–5.0 |
| 窒素 (N) | 0.24–0.32 |
| 炭素 (C) | ≤ 0.03 |
| マンガン (ん) | ≤ 1.20 |
| シリコン (そして) | ≤ 0.80 |
| リン (P) | ≤ 0.035 |
| 硫黄 (S) | ≤ 0.02 |
| 鉄 (鉄) | バランス |
機械的性質 2507 ステンレス鋼
2507 stainless steel provides very high strength while maintaining good toughness and corrosion resistance.
| 財産 | 代表値 |
|---|---|
| 抗張力 | 800–1000 MPa |
| 降伏強さ | ≥ 550 MPa |
| 伸長 | ≥ 15–25% |
| 硬度 | ≤ 300 HB |
| 密度 | 7.8 g/cm3 |
主な性能特徴
1. 優れた耐食性
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 (木材) is very high, making it suitable for long-term seawater exposure.
2. 高強度 (Dual Phase Structure)
The duplex structure (フェライト + オーステナイト) gives 2507:
- Nearly double the strength of 304/316 ステンレス鋼
- Excellent load-bearing capacity
- Reduced material thickness for same strength requirements
- 優れた耐疲労性
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
オーステナイト系グレードとの比較, 2507 オファー:
- Better thermal conductivity
- Lower thermal expansion
- Stable performance under temperature variation
一般的な用途 2507 ステンレス鋼板
2507 stainless steel plate is widely used in highly corrosive and high-strength engineering environments.
代表的なアプリケーションには次のものがあります。:
- Offshore oil and gas platforms
- Seawater desalination systems
- Marine engineering structures
- 化学処理装置
- Heat exchangers and pressure vessels
- Flue gas desulfurization (FGD) システム
- Pulp and paper industry equipment
- Subsea pipelines and components
- High-pressure seawater systems
- パンプス, バルブ, and fittings
2507 Duplex vs 2205 二相ステンレス鋼
| 財産 | 2507 ステンレス鋼 | 2205 ステンレス鋼 |
|---|---|---|
| タイプ | スーパーデュプレックス | デュプレックス |
| 耐食性 | より高い | 良い |
| 強さ | より高い | 高い |
| PREN Value | ~40+ | ~35 |
| 耐塩化物性 | 素晴らしい | 良い |
| 一般的な使用方法 | Severe offshore/chemical | General marine/industrial |
