A242 | Стойкая к атмосферным воздействиям сталь
A242 | Стойкая к атмосферным воздействиям сталь
A242 Weathering Steel is a high-strength, low-alloy steel designed to resist atmospheric corrosion. “A242” refers to its ASTM standard. It forms a protective rust layer when exposed to the elements, reducing the need for painting. A242 offers durability, toughness, weldability, and is used in bridges, buildings, and outdoor structures. Equivalent grades include E36WA4, S355J2WP, and A588.
Описание
What is A242？
A242 is a low-alloy steel made of 0.25-0.55% copper and 0.20-0.50% chromium. It comes in solid plates or sections and resists corrosion. When exposed to air, it forms a protective iron oxide layer, reducing the need for paint. It is processed through hot rolling and used in outdoor structures like bridges and buildings.Why Choose A242 Weathering Steel?
Спецификация продукта
| Категория | Подробности |
| Стандарт качества | ASTM A242/A242M |
| Сертификаты | ASTM G101, ISO 9001, EN 10025 S355J2WP, BV, SGS |
| Толщина | 6-100мм |
| Ширина | 900-4800мм |
| Длина | 3000-25000мм |
| Масса | Зависит от длины и ширины |
| Outer diameter (OD) | Pipes:60 mm to 100 mm, Bars: 10 mm to 150 mm |
| Inner diameter (ID) | Pipes: 5 mm to 15 mm |
| Допуски | Thickness: ±0.25 mm to ±1.0 mm, Width: ±2 mm to ±4 mm, Length: ±5 mm to ±10 mm |
| Технологии | Горячая прокатка |
| Служба обработки | Welding, Punching, Cutting, Bending, Decoiling |
| Формы | Weathering Steel Plate, Weathering Steel Sheet, Pipes, Profiles |
| MOQ (минимальный объем заказа) | 5 тонн (по фактическому тоннажу) |
| Время выполнения | Typically 7-20 days (The larger the ordered tonnage, the longer the delivery time) |
| Условия цены и оплаты | На основе требований заказчика, T/T, L/C |
| Порты | Циндао, Ляньюньган, Далянь |
| Страны экспорта | Юго-Восточная Азия, Центральная Азия, Европа, Россия, Южная Америка, Ближний Восток и т. д. |
| Способ доставки | Предлагает морские, воздушные и индивидуальные перевозки |
Химический состав
| Элемент | A242 Type 1 Content (%) | A242 Type 2 Content (%) |
|---|---|---|
| Углерод, С | ≤ 0,15 | ≤ 0,15 |
| Хром, Cr | 0.40 – 0.65 | 0.40 – 0.70 |
| Медь, Cu | 0.20 – 0.40 | 0.30 – 0.50 |
| Марганец, Mn | 0.20 – 0.50 | 0.20 – 0.60 |
| Никель, Ni | ≤ 0,20 | ≤ 0,20 |
| Фосфор, P | 0.07 – 0.15 | 0.08 – 0.15 |
| Кремний, Si | 0.15 – 0.30 | 0.15 – 0.30 |
| Сера, S | ≤ 0,05 | ≤ 0,05 |
Механические свойства
| Свойство | Type 1 (≤ 16mm) | Type 1 (> 16mm) | Type 2 (≤ 16mm) | Type 2 (> 16mm) |
|---|---|---|---|---|
| Предел прочности | 480 МПа (70 тыс.фунтов/кв.дюйм) | 460 MPa (67 ksi) | 480 МПа (70 тыс.фунтов/кв.дюйм) | 460 MPa (67 ksi) |
| Предел текучести | 345 МПа (50 тыс.фунтов/кв.дюйм) | 315 MPa (46 ksi) | 345 МПа (50 тыс.фунтов/кв.дюйм) | 315 MPa (46 ksi) |
| Elongation (2 in / 50 mm) | 21% | 18% | 21% | 18% |
| Твердость по Бринеллю | 170-190 HB | 170-190 HB | 170-190 HB | 170-190 HB |
| Твердость по Роквеллу | 84-92 HRB | 84-92 HRB | 84-92 HRB | 84-92 HRB |
| Твердость по Виккерсу | 175-200 HV | 175-200 HV | 175-200 HV | 175-200 HV |
| Модуль упругости | 190-210 ГПа | 190-210 ГПа | 190-210 ГПа | 190-210 ГПа |
Данные после нормализующей обработки
| Свойство | Type 1 (≤ 16mm) (Normalized) | Type 1 (> 16mm) (Normalized) | Type 2 (≤ 16mm) (Normalized) | Type 2 (> 16mm) (Normalized) |
|---|---|---|---|---|
| Предел прочности | 500 MPa (72 ksi) | 480 МПа (70 тыс.фунтов/кв.дюйм) | 500 MPa (72 ksi) | 480 МПа (70 тыс.фунтов/кв.дюйм) |
| Предел текучести | 365 MPa (53 ksi) | 335 MPa (49 ksi) | 365 MPa (53 ksi) | 335 MPa (49 ksi) |
| Elongation (2 in / 50 mm) | 20% | 18% | 20% | 18% |
| Твердость по Бринеллю | 185-200 HB | 185-200 HB | 185-200 HB | 185-200 HB |
| Твердость по Роквеллу | 88-95 HRB | 88-95 HRB | 88-95 HRB | 88-95 HRB |
| Твердость по Виккерсу | 190-210 HV | 190-210 HV | 190-210 HV | 190-210 HV |
| Модуль упругости | 200 ГПа | 200 ГПа | 200 ГПа | 200 ГПа |
Отрасли и приложения
| Отрасли промышленности | Продукция |
|---|---|
| Bridges and Infrastructure | Bridge decking, support beams, guardrails, trusses, pedestrian walkways |
| Building Facades | Exterior wall panels, cladding, window frames, roofing, decorative facades |
| Railway and Transport | Railway cars, container sides, transport frames, coupler housings, platform decking |
| Energy and Power | Power line poles, wind turbine structures, transformer housings, cooling towers, equipment housings |
| Marine and Coastal | Dock structures, marine pilings, coastal barriers, port cranes, bulkheads |
| Agriculture Equipment | Grain bins, storage tanks, equipment frames, fencing, machinery panels |
| Промышленное оборудование | Conveyor frames, processing tanks, protective casings, ventilation systems, loading platforms |
| Sculptures and Art | Monuments, outdoor sculptures, art installations, large statues, architectural structures |
| Highway Safety | Guardrails, median barriers, traffic signs, signal poles, safety barriers |
Упаковка
SteelPRO Group ensures A242 weathering steel is expertly packed for safe transport and handling. Our method addresses key challenges in packing A242 steel:
- Защитное покрытие: A weather-resistant layer is applied to prevent corrosion during transit, especially for overseas shipping where humidity control is critical.
- Durable Strapping and Securing: We use heavy-duty steel or polyester straps to secure materials, reducing the risk of shifting or damage, even in long-haul transport.
- Moisture Control and Wrapping: Each shipment includes moisture-resistant wrapping to shield the steel from direct water exposure, essential for maintaining the integrity of the rust-protective layer.
- Custom Palletizing: Our packing teams create customized pallets and supports for various steel shapes, from plates to bars, ensuring stability and easy unloading at destination sites.
SteelPRO Group’s packing process ensures our A242 weathering steel arrives in optimal condition, ready for immediate use.
Обработка
A242 Heat Treatment Product Options
We provide A242 weathering steel in a variety of heat-treated forms to suit different application needs:
A242 Surface Finish
To optimize performance, we offer a range of surface finishes tailored to A242 weathering steel applications:
- Дробеструйная обработка: Provides a clean, roughened surface for enhanced adhesion of coatings or paint.
- Маринование: Removes scale and impurities, resulting in a smooth, uniform surface ideal for further processing.
- Oil Coating: Adds a thin layer of protective oil, reducing oxidation during storage and transit.
- Anti-Fingerprint Coating: Adds a transparent protective layer to reduce smudging and surface marks, commonly used in visible applications.
- Пассивация: Enhances corrosion resistance by forming a protective oxide layer, ideal for extended outdoor use.
- Фосфатирование: Creates a corrosion-resistant base layer that improves paint adhesion, commonly used in construction and automotive parts.
По запросу могут быть выполнены индивидуальные требования к обработке поверхности.
A242 Weathering Steel Supplier
As a trusted supplier of A242 Weathering Steel, we offer comprehensive support across price, product range, quality, and logistics to meet your project needs:
- Competitive Pricing and Client Focus: We provide fair pricing while ensuring responsive support throughout your project, helping you achieve cost efficiency without compromising quality.
- Complete Product Range with Precision Options: Our A242 Weathering Steel selection covers plates, bars, coils, and sheets, with customization options for cutting, bending, and forming to meet exact specifications.
- Strict Quality Assurance and Certifications: Every batch undergoes rigorous testing, and we ensure certification according to standards like ASTM and EN, guaranteeing durability and compliance with industry requirements.
- Custom Solutions, Secure Packaging, and Reliable Logistics: We deliver tailored A242 solutions with safe packaging to prevent transit damage and provide efficient logistics, keeping you informed at every delivery stage.
With our expertise and commitment to quality, we are equipped to support both small-scale and large-scale A242 Weathering Steel projects.
Наши услуги
SteelPRO Group – производитель и поставщик решений для специальной стали, предлагающий многоотраслевые прикладные решения и индивидуальные услуги, качество 100% бесплатно, сопровождающий клиентов в их росте!
Наш контроль качества
- Округлость
- Терпимость
- Микроструктура
- Неразрушающий контроль
- Разрушающий контроль
- Управление процессами
Обработка интеграции услуг
- Сварка
- Изготовление Металла
- Обработка на станках с ЧПУ
- Токарный станок
- Формирование
What Is The Maximum Thickness Available For A242 Weathering Steel?
The maximum thickness for A242 can vary by supplier and equipment, but we typically offer up to 100 mm. Specific requirements can be custom-produced.
How Is A242 Priced Compared To Other Weathering Steels?
A242 is competitively priced relative to other high-performance weathering steels due to its composition and production scale, providing cost-effectiveness for large projects.
Does A242 Require Special Handling For Storage?
Yes, to maintain its weathering properties, A242 should be stored in a dry environment. We recommend using protective wrapping if extended storage is necessary.
Can Orders Be Adjusted Mid-Production If Specifications Change?
Yes, we offer flexible solutions. If adjustments are minor, we can usually incorporate them mid-production; significant changes may require additional lead time.
What Is The Expected Durability In Coastal Or High-Humidity Environments?
A242 performs well in corrosive environments but benefits from a pre-rusted or sealed finish in high-humidity areas to maximize longevity.
Are Documentation And Production Records Available Upon Request?
Yes, we provide complete documentation, including production records and quality inspection reports, to support traceability and compliance.
КОНТАКТ
КОНТАКТ
Сертификаты
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