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Weathered steel plate, المعروف أيضا باسم weathering steel plate, is a type of low-alloy structural steel designed to resist atmospheric corrosion. The material forms a طبقة واقية مستقرة تشبه الصدأ on its surface when exposed to the environment. This layer protects the internal steel from further corrosion and gives the material its distinctive brown appearance.

بسبب هذه الخاصية, weathering steel is widely used in الجسور, بنيان, تصميم المناظر الطبيعية, والتطبيقات الهيكلية في الهواء الطلق.

Why It Is Called Weathering Steel

Weathering steel is named for its ability to resist the effects of weather exposure. When ordinary carbon steel is exposed to rain and air, rust continues to grow and eventually weakens the structure.

Weathering steel behaves differently:

1. تشكيل الزنجار الواقي
   The steel forms a dense oxide layer (الزنجار) on the surface after exposure to rain and oxygen.

2. Reduced Corrosion Rate
   This patina slows down further corrosion and protects the underlying metal.

3. متانة طويلة الأمد
   Once the protective layer stabilizes, the corrosion rate becomes much lower than that of ordinary steel.

This natural process allows weathering steel to perform well outdoors without frequent painting or coatings.

Common Grades of Weathering Steel Plates

Weathering steel plates are produced under several international standards. Each grade has slightly different chemical compositions and mechanical properties.

These grades all contain alloying elements that improve corrosion resistance.

Key Alloying Elements in Weathering Steel

Weathering steel contains specific alloy elements that help create the protective patina.

The combination of these elements allows the steel surface to form a كثيفة, طبقة أكسيد مستقرة that slows corrosion.

Common Applications of Weathered Steel Plates

Weathered steel plates are widely used in projects exposed to outdoor conditions.

بناء الجسر

Weathering steel plates are used for عوارض الجسور, الحزم, and structural supports because they reduce maintenance requirements.

الكسوة المعمارية

The natural rust color makes weathering steel popular for واجهات المباني, exterior wall panels, والهياكل الزخرفية.

المناظر الطبيعية والتصميم الحضري

تُستخدم ألواح الصلب المجويّة بشكل شائع في:

• حواف الحديقة

• شبكات الشجرة

• منحوتات خارجية

• الجدران الاستنادية المناظر الطبيعية

الهياكل الصناعية

كما يستخدم الصلب التجوية في سيارات السكك الحديدية, حاويات, والمعدات الصناعية في الهواء الطلق.