Duplex Steel F53 (UNS S32750): Product Introduction
Duplex stainless steel F53, also known as UNS S32750, is a highly corrosion-resistant alloy with superior mechanical properties. This article provides a comprehensive introduction to Duplex Steel F53 (UNS S32750), covering its chemical composition, mechanical properties, performance at different temperatures, industry applications, shapes and sizes, production standards, welding and processing capabilities, advantages and disadvantages, and a comparison with similar alloys.
化學成分
Duplex Steel F53 (UNS S32750) has a balanced chemical composition that enhances its corrosion resistance and mechanical strength:
| 元素 | 作品 （％） |
|---|---|
| 鉻 (Cr) | 24.0 – 26.0 |
| 鎳 (Ni) | 6.0 – 8.0 |
| 鉬（Mo） | 3.0 – 5.0 |
| Nitrogen (N) | 0.24 – 0.32 |
| 碳（C） | 0最大.030 |
| 矽（Si） | 0.80 max |
| 錳（Mn） | 1.20 max |
| 磷（P） | 0最大.035 |
| 硫（S） | 0最大.020 |
機械性質
Duplex Steel F53 (UNS S32750) exhibits excellent mechanical properties suitable for a wide range of applications:
| 財產 | 價值 |
|---|---|
| 拉伸強度，ksi (MPa) | 116 min (800 min) |
| 屈服強度（0.2% 偏移），ksi (MPa) | 80 min (550 min) |
| 伸長率（2 英吋中的%） | 15分鐘 |
| 硬度，洛氏 C (HRC) | 32 max |
性能特點
Duplex Steel F53 (UNS S32750) offers superior performance across various conditions:
- 耐腐蝕性能： 在海水和化學加工等腐蝕性環境中，具有出色的耐氯化物引起的應力腐蝕開裂 (SCC)、點蝕和縫隙腐蝕能力。
- 力量： Higher strength compared to standard austenitic stainless steels, making it suitable for structural applications requiring high mechanical strength.
- 焊接性： 透過適當的填充材料和技術，具有良好的可焊性，確保易於製造和維修。
產業應用
Duplex Steel F53 (UNS S32750) finds extensive use in industries requiring robust corrosion resistance and high strength:
| 工業部門 | 應用領域 |
|---|---|
| 油和氣 | Offshore and subsea pipelines, valves, and components exposed to corrosive fluids. |
| 化學加工 | Heat exchangers, pressure vessels, and tanks handling aggressive chemicals. |
| 海洋 | Propeller shafts, seawater desalination plants, and marine structural components. |
形狀和尺寸
Duplex Steel F53 (UNS S32750) is available in various forms and sizes to meet specific application needs:
- 形式： 板材、板材、棒材、管材、管道和配件。
- 尺寸： 板材厚度範圍為 0.5 毫米至 50 毫米，圓鋼直徑範圍為 6 毫米至 300 毫米。
生產標準
Duplex Steel F53 (UNS S32750) adheres to international production standards ensuring quality and reliability:
| 產品形態 | 可用形狀 | 可供選擇的尺寸 | 生產標準 |
|---|---|---|---|
| 板材/片材 | 板材、板材 | 厚度：0.5 毫米 – 50 毫米 | ASTM A240、EN 10088 |
| 棒材/棒材 | 圓棒、方棒 | 直徑：6 毫米 – 300 毫米 | ASTM A276、EN 10088 |
| 管道/管材 | 無縫、焊接 | 外徑：6 毫米 – 300 毫米 | ASTM A790、ASTM A789 |
焊接及加工
Duplex Steel F53 (UNS S32750) offers good weldability and processing characteristics:
- 焊接： 可以使用 TIG、MIG 和埋弧焊等標準方法進行焊接，並進行適當的預熱和焊後熱處理以保持耐腐蝕性。
- 機械加工性： 通常低於奧氏體不銹鋼，需要更慢的速度和更大的功率來進行加工操作。
的優點和缺點
| 方面 | 細節 |
|---|---|
| 優點 | Exceptional corrosion resistance in aggressive environments, high strength, good weldability, suitable for a wide range of applications in marine, oil and gas, and chemical industries. |
| 缺點 | 與奧氏體不銹鋼相比，其韌性較低，由於其雙相微觀結構，在焊接和製造過程中需要小心處理。 |
與類似合金的比較
Duplex Steel F53 (UNS S32750) is often compared with other duplex stainless steels such as F51 (UNS S31803) and super duplex stainless steels like F55 (UNS S32760). Here’s a brief comparison:
| 合金類型/性能 | Duplex Steel F53 (UNS S32750) | 雙相鋼 F51 (UNS S31803) | 超級雙相鋼 F55 (UNS S32760) |
|---|---|---|---|
| 耐腐蝕性能 | 優異的耐氯化物引起的腐蝕能力，包括點蝕和縫隙腐蝕。 | Excellent resistance, slightly lower than F53 in aggressive chloride environments. | 增強的抗點蝕和縫隙腐蝕能力，特別是在海水應用。 |
| 力量 | Higher strength compared to standard duplex steels, suitable for structural applications. | 強度高、韌性好，適合通用用途。 | 雙相鋼中強度最高，非常適合惡劣環境下的重型應用。 |
| 應用領域 | Oil and gas, chemical processing, marine environments. | 類似的應用在結構和建築應用中具有更廣泛的用途。 | 海上平台、熱交換器和海水處理系統。 |
This detailed article introduces Duplex Steel F53 (UNS S32750), highlighting its chemical composition, mechanical properties, performance characteristics, industry applications, available forms and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and a comparison with similar alloys. Engineers and professionals seeking durable materials for applications requiring corrosion resistance and high strength will find this information valuable for selecting the appropriate alloy to meet specific operational needs.