Application of A242 Type 2 corten steel plates

What is ASTM A242 Type 2 Steel Plate ?

ASTM A242 Type 2 is a high-strength, low-alloy weathering (Corten) steel specification. It features enhanced atmospheric corrosion resistance and specific chemical composition limits (including chromium, nickel, and copper) that form a protective rust patina, though it is more restricted for welding than Type 1.

We offer these ASTM A242 TYPE 2 Plates in different lengths, shapes, sizes, dimensions, diameters, thicknesses, forms, standards, finishes, types, specifications, etc and available like hot rolled plates, cold rolled plates, polished plates, etc. We perform numerous types of tests like hardness test, toughness test, flaring test, chemical test, mechanical test, impact test, destructive test, ultrasonic test, strength test, flaring test, positive material test, etc. We provide the best packing facility like wooden box, bundle, plastic wrap, carton box according to the packing requirements of clients.

GNEE Steel  is one of the leading supplier and stockists of premium quality range of ANSI/ASME ASTM A242 TYPE 2 Plates | Corten Steel Plates. We are a highly experienced company in supplying Corten Steel Plates in customized sizes, various materials, and in numerous dimensions. Products are visually checked for conformity to ASTM, DIN, ASME, MSS, EN, and JIS codes and standards. Upon demand, official certified Inspection organizations can be called in to witness the material reports, dimensions and quality conformity of products.

With more than 18 years' experience, we understand the steel industry deeply as we supply to all major industries across the world. We regularly supply these Corten Steel Plates to many leading industrial units and industries like chemical engineering, cement industries, refinery plants, oil & gas industries, petro-chemical industries, power generation industries, natural gas industries, water disposal industries, etc. Our products are preferred by our clients due to their unique features including durability, reliability, reasonable price, dimensional accuracy, high-end finishing, etc.

ASTM A242 TYPE 2 Plates Specifications

Key Characteristics of ASTM A242 Type 2 Steel Plate

• Corrosion Resistance: Develops a stable protective rust-like appearance over time, reducing paint and maintenance needs.
• Chemical Makeup: Contains controlled amounts of chromium (0.40–0.65%), nickel (≤0.40%), and copper (0.25–0.40%) to secure a high corrosion index rating.
• Mechanical Strength: Delivers high yield and tensile strength suited for structural frameworks. 

Primary applications of A242 weathering steel

The durability and aesthetic properties of A242 weathering steel make it well-suited for a wide array of outdoor uses where reduced maintenance is desired.

Construction: Used for structural components in buildings, bridges, and other infrastructure projects.

Industrial structures: Common in smokestacks, industrial air ducts, and water tanks.

Transportation: Utilized for freight wagons, shipping containers, and railway cars.

Art and landscaping: Featured in sculptures and other outdoor aesthetic and landscaping installations.

ASTM A242 TYPE 2 Plates Mechanical Properties

ASTM A242 TYPE 2 Plates Chemical Composition

Important considerations

• Patina runoff: During the initial weathering process, A242 steel will produce rust-colored runoff that can stain adjacent surfaces like concrete. Measures should be taken to manage this runoff during installation.
• Wet environments: While it is a weathering steel, A242 should not be used in conditions where moisture remains trapped and prevents the protective patina from fully drying and developing. This can lead to increased corrosion.
• Thickness limitations: The A242 specification applies primarily to structural plates up to 4 inches (100 mm) thick, though its mechanical properties and typical applications vary with thickness.
• COR-TEN® vs. A242: While often used interchangeably, COR-TEN® is the branded name originally registered by U.S. Steel. ASTM A242 is the standard specification for a weathering steel with similar properties.

ASTM A242 Type 2 is intended for atmospheric exposure. It is not recommended for continuous immersion, marine splash zones, or environments where chloride contamination or trapped moisture prevents the formation of a stable protective patina.

Need Help Choosing the Right Weathering Steel?

Not sure whether ASTM A242 Type 2, ASTM A588, S355J2WP, or SPA-H is the best choice for your project? Our experienced engineering and export team can help you compare specifications, corrosion performance, fabrication options, and costs to ensure you select the most suitable weathering steel.

Send us your drawings or project requirements today, and we'll provide a fast technical recommendation, competitive quotation, and customized processing solution within 24 hours.

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What is the difference between ASTM A242 Type 1 and Type 2?

ASTM A242 type 1 steel plate material is one of the most widely used steel grades. This structural steel is produced through hot rolling and is suitable for forming, grinding, drilling and cutting. ASTM A242 type 2 plate shows good corrosion resistance and have high durability, ductility and tensile strength.

What is the ASTM A242 equivalent to?

What is the difference between ASTM A588 and A242?

ASTM A588 grade A plate has a 50ksi minimum yield strength and a 70ksi minimum tensile strength. A242 plate is low alloy structural steel for structural members where weight savings and atmospheric corrosion resistance are important. The ASTM A588 grade A plate is equivalent to Corten A steel plate.

What is material code A242?

ASTM A242 material is a low alloy structural steel that has high strength. It comes with improved resistance to corrosion and high temperatures. ASTM A242 plate is usually supplied in normalized/ quenched and tempered condition. The ASTM A242 strips can be found in the Industrial air pollution stacks, water tanks, etc.

Founded in 2008, Gnee (Tianjin) Supply Chain Group Co., Ltd. specializes in the global trade and processing of Corten steel products.
• We handle all kinds of Corten engineering projects, such as bridges, gardens, hotels, and facade systems.
• Compliant with ASTM, EN, and other international standards; third-party inspection supported.
• Exported to over 200 countries and regions worldwide.
• 8 subsidiaries across China and overseas, ensuring global service coverage.
Application Fields: Architecture, landscaping, gardening, cladding, and urban infrastructure.