Кортен Сталь
Corten Steel includes a variety of international grades such as ASTM A242, АСТМ А588, S355J2W, and SPA-H, each designed for different structural and environmental requirements. These grades share a common feature: excellent atmospheric corrosion resistance through the formation of a protective rust patina, making them ideal for long-term outdoor applications.
- Описание
Кортен Сталь, также известная как атмосферостойкая сталь, is a group of low-alloy steels designed to form a stable rust-like protective layer when exposed to the atmosphere. This protective patina reduces further corrosion and eliminates the need for painting in many outdoor applications.
It is widely used in architecture, мосты, ландшафтный дизайн, транспортные контейнеры, and outdoor sculptures due to its durability and distinctive appearance.
Common Corten Steel Grades
Corten Steel is typically classified into several standardized grades depending on regional standards and chemical composition.
ASTM Standard Grades
| Оценка | Стандартный | Ключевые характеристики |
|---|---|---|
| АСТМ А242 | Structural Weathering Steel | Высокая прочность, good atmospheric corrosion resistance |
| АСТМ А588 | High-Strength Low-Alloy Steel | Improved corrosion resistance for structural applications |
| Тип АСТМ А606 4 | Sheet and Strip Weathering Steel | Excellent formability, used for thinner products |
В / European Standard Grades
| Оценка | Стандартный | Equivalent Characteristics |
| S355J2W | В 10025-5 | Weather-resistant structural steel |
| S355J0W | В 10025-5 | Good low-temperature toughness |
| S355K2W | В 10025-5 | Enhanced impact resistance |
Common Commercial Equivalent Grades
| Оценка | Описание |
| СПА-Х | Japanese weathering steel for containers and structures |
| СПА-С | Improved corrosion-resistant container steel |
| Q355NH | Chinese weathering structural steel |
| Q235NH | Low-strength weathering steel for general use |
Характеристики химического состава
Although each grade varies slightly, Corten Steel generally contains alloying elements that improve corrosion resistance:
| Элемент | Функция |
| Медь (Cu) | Enhances rust layer stability |
| Хром (Кр) | Улучшает стойкость к окислению |
| Никель (В) | Улучшает прочность и устойчивость к коррозии |
| Фосфор (П) | Enhances patina formation |
| Кремний (И) | Strengthens corrosion protection layer |
These elements work together to form a dense, adherent oxide layer that protects the steel surface from deeper corrosion.
Performance Features of Corten Steel Grades
- Отличная устойчивость к атмосферной коррозии
- Self-protecting rust patina formation
- Высокая структурная прочность
- Длительный срок службы на открытом воздухе
- Низкие требования к техническому обслуживанию
- Good weldability and machinability
Типичные применения
Corten Steel grades are used in a wide range of industries:
- Bridge structures and highways
- Building facades and architectural panels
- Landscape and garden edging systems
- Shipping containers and railway vehicles
- Уличные скульптуры и арт-инсталляции
- Industrial equipment exposed to weather
- Retaining walls and infrastructure projects
