ASTM A242 Corten Steel Plate & Sheet

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Corten Steel ASTM A242 Plate & Sheet

Corten Steel Tube is a recognised supplier and exporter of ASTM A242 Corten Steel Plates with incredible accuracy and robust construction. These corten plates conform to national and international standards for greater quality and safety. Our experienced supervisors conduct the inspection of these corten steels to allow for high durability. They are available at a very competitive price and would be ideal to use in harsh conditions.

Places where ASTM A242 Plates are used in industrial buildings, offshore drilling rigs, agricultural earthworks, industrial building construction, railways, multi-storey buildings, culverts and other road bridges, ports and harbours, among other specified utilities.

The thickness of an ASTM A242 plate can range from nominal 2 to 460 mm and lengths of 6000 mm to 12000 mm. The plates are available in various specifications, i.e., ASME, ASTM, etc.

ASTM A242 material is a low-alloy structural steel with high strength that offers some added resistance to corrosion and high temperatures. ASTM A242 weathering steel plates are typically supplied in the normalised, quenched and tempered condition.

ASTM A242 Plates come in various finishes, including hot rolled plate, cold rolled sheet, plastic-coated, and half-hard. Available hardness levels are quarter hard, soft, half hard, spring hard, and fully hard. They are easily cold-formed, allowing for easy manipulation. ASTM A242 corten plates can be ordered to customers’ specifications in size and length. ASTM A242 corten plates are resistant to rust and can be cut according to specific needs.

ASTM A242 Corten weathering steel plates are inspected for quality using tests like radiography testing, flaring tests, flattening test, and have inspections by a third party agency. ASTM A242 Corten weathering steel plates are sent out in crates made out of wood to protect against rust and damage while in transit.

What is an A242 Plate?

A242 Plates, or ASTM A242, are high-strength, low-alloy structural steels that were designed to tarnish, creating a weathered or rust-like aesthetic when exposed to weather conditions. The rusting is beneficial to the safety characteristics of the steel due to the oxidation process. The A242 plates create a protective layer which assists in ensuring that it is not going to need to be coated or painted and therefore prolongs the life of the steel. ASTM A242 steel is commonly referred to as weathering steel in practice because the aesthetic of the rust-like finish is particularly desirable for weathering steel. They oxidise, or “rust”, to resist atmospheric corrosion better than traditional steels, especially outdoors without coatings.  

A242 plates also possess excellent mechanical strength and have no more maintenance than traditional steel. Therefore, they are often used in structures including but not limited to bridges, building facades, rail cars, or outdoor sculptures. The A242 plates provide all of the structural qualities of steel with the aesthetic quality of precast architectural panels, leading to the universal acceptance of weathering or A242 plates in modern architecture and engineering.

A242 Plate Specifications

Specification Details
Standard ASTM A242 / ASME SA242
Product Type Weathering Steel Plates
Grade A242 Type 1 / Type 2
Thickness Range 3mm to 150mm
Width Up to 2500mm
Length Up to 12000mm (Custom lengths available)
Surface Finish Hot Rolled, Pickled, Weathered Surface
Form Flat Plate, Cut-to-Size, Custom Shape Profiles
Production Method Rolled / Annealed / Tempered
Edge Condition Mill Edge / Trimmed Edge
Tolerance As per ASTM A6/A6M
Test Certificates EN 10204 3.1 / 3.2, NABL Approved Labs
Delivery Condition As Rolled / Normalized / Quenched & Tempered

Industry Standards & Certifications Compliance

Corten Steel Tube ensures complete compliance with globally accepted manufacturing and testing standards:
Standard/Certification Compliance
ASTM A242 / ASME SA242 Yes
EN 10025-5 S355JOWP/J2W Yes
ISO 9001 (QMS) Yes
ISO 14001 (EMS) Yes
CE Certification Available on Request
PED 2014/68/EU On Request
NACE MR0103 / MR0175 Optional
Third-Party Inspection Available

Chemical Composition of A242 Plates

Element C Mn P S Si Cu Cr Ni
% Content ≤ 0.15 0.50–1.35 ≤ 0.04 ≤ 0.05 0.25–0.75 0.20–0.60 0.40–0.70 ≤ 0.50

Mechanical Properties of A242 Plates

Property Value
Tensile Strength 480 – 620 MPa (depending on thickness)
Yield Strength ≥ 345 MPa
Elongation ≥ 18% (in 200mm)
Impact Resistance ≥ 27J (at -20°C for thicker sections)
Hardness ≤ 200 HB
Atmospheric Resistance 4–8x greater than mild carbon steel

Key Benefits of ASTM A242 Plates

  • Weather Resistance: Exceptional corrosion resistance in open-air environments.
  • Low Maintenance: Eliminates need for painting and coating.
  • Structural Strength: High tensile and yield strength ensures stability in load-bearing applications.
  • Cost-Efficient: Long life span reduces replacement and maintenance costs.
  • Aesthetic Appeal: Naturally developing patina adds architectural beauty.
  • Weldable & Formable: Supports diverse fabrication requirements.

Common Applications

A242 Plates and ASTM A242 weathering steel plates are widely used in:
  • Bridge Construction and Heavy Structural Engineering
  • Railway Cars and Cargo Containers
  • Building Facades, Cladding, and Screens
  • Outdoor Sculptures and Art Installations
  • Transmission Poles and Towers
  • Marine Structures and Offshore Equipment
  • Industrial Silos and Storage Tanks

Why Choose Corten Steel Tube for A242 Plates?

Corten Steel Tube has been around for many years and is a responsible and established supplier of quality ASTM A242 plates, and we have supplied many industries around the world with A242 plates. We comply with international quality standards, and all of our A242 plates are manufactured with high blast yield and tensile strength and high corrosion resistance. Corten Steel Tube also carries a wide range of stock and can supply any size; our A242 plates can meet small and large orders quickly and efficiently. Corten Steel Tube can also offer either thicker or thinner sizes and shapes, third-party inspection, and best of all, competitive pricing and efficient service. We are also available for technical and commercial assistance. We are the place for all your A242 plates and provide quality products and service

Types of ASTM A242 Steel Plates

ASTM A242 Steel Applications Industry

  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry
  • Offshore Oil Drilling
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals

Frequently Asked Questions (FAQ)

A242 is a high-strength, low-alloy structural steel known for its atmospheric corrosion resistance. It forms a rust-like patina that protects the steel from further corrosion, making it ideal for bridges and architectural applications.

A242 is often considered equivalent to COR-TEN steel in terms of corrosion resistance and mechanical properties. In some cases, it is compared with ASTM A588, though slight differences exist in composition and application suitability.

Key benefits of Corten steel cladding include:

  • Increased Durability: Extends the structure’s lifespan.
  • Aesthetic Enhancement: Adds unique character and visual appeal to facades.
  • Low Maintenance: Saves time and resources on upkeep.
  • Sustainability: Corten steel is an environmentally friendly and recyclable material.

Both A242 and A588 are weathering steels, but A588 has higher strength and is available in more product forms. A242 is mainly supplied as plates, while A588 is available in plates, beams, and channels with slightly different chemical compositions.

The tensile strength of ASTM A242 steel typically ranges from 70,000 to 90,000 psi (480–620 MPa), depending on the thickness of the material. It is designed to provide both strength and excellent resistance to atmospheric corrosion.

A240 refers to a standard specification for chromium and chromium-nickel stainless steel plate, sheet, and strip used for pressure vessels and general applications. It includes grades like 304, 316, and others known for corrosion resistance.

We Supply Globally

We Supply Our ASTM A242  Corten Weathering Steel Plate to various countries like Tunisia, United States, Kazakhstan, Belgium, Turkey, Poland, Poland, Austria, Brazil, Mexico, Nigeria, Bahrain, India, Iran, Peru, Israel, Lithuania, Namibia, Philippines, Sri Lanka, Egypt, Trinidad & Tobago, Ukraine, France, Canada, Morocco, Belarus, Switzerland, Angola, Iran, Bangladesh, Lebanon, Azerbaijan, Portugal, Iraq, Nigeria, Gabon, Vietnam, Ecuador, Bulgaria, Yemen, Saudi Arabia, Spain, Romania, Pakistan, Kenya, Serbia, Bhutan, Norway, Puerto Rico, New Zealand, Sweden, Indonesia, Netherlands, Italy, Taiwan, Ireland, Colombia, Oman, Chile, Russia, Afghanistan, Macau, United Kingdom, Greece, Malaysia, Costa Rica, Estonia, Qatar, Libya, Mongolia, Argentina, South Korea, Australia, Slovakia, Denmark, Tibet, Finland, United Arab Emirates, Mexico, Kuwait, Croatia, Thailand, China, Zimbabwe, Nepal, Singapore, Germany, Venezuela, Gambia, Algeria, Chile, Hong Kong, Ghana, Japan, Jordan, South Africa, Czech Republic, Bolivia, Hungary.

We Supply Worldwide

We Supply Our ASTM A242  Corten Weathering Steel Plate to various cities like Atyrau, Sydney, Lahore, Cairo, Tehran, Edmonton, Calgary, Granada, Kanpur, Petaling Jaya, Lagos, Haryana, Montreal, Perth, Navi Mumbai, Courbevoie, Bengaluru, Karachi, Ernakulam, Bogota, Ahvaz, Kolkata, La Victoria, Jeddah, Pimpri-Chinchwad, Baroda, Pune, New Delhi, Colombo, Coimbatore, Rajkot, Hyderabad, Al Khobar, Vung Tau, Gurgaon, Kuala Lumpur, Dubai, Milan, Bhopal, Surat, Visakhapatnam, Hong Kong, Port-of-Spain, Manama, Ranchi, Singapore, Kuwait City, Secunderabad, Melbourne, Nagpur, Jaipur, Ho Chi Minh City, Sharjah, Aberdeen, Ludhiana, Al Jubail, Abu Dhabi, Nashik, Howrah, Algiers, Houston, Bangkok, Brisbane, London, Chandigarh, Gimhae-si, Rio de Janeiro, Dallas, Riyadh, Busan, Thiruvananthapuram, Mexico City, Faridabad, Santiago, Chiyoda, Mumbai, Jakarta, Jamshedpur, Ankara, Noida, Ulsan, Thane, Los Angeles, Madrid, Geoje-si, Toronto, New York, Hanoi, Muscat, Seoul, Doha, Indore, Vadodara, Chennai, Dammam, Moscow, Istanbul, Caracas, Ahmedabad.

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