A242 type 1 low alloy high strength steel supplier

ASTM A242 Type 1 weathering steel plate — a low-alloy, high-strength structural steel designed for outdoor and exposed applications where improved atmospheric corrosion resistance and reduced maintenance are required. The alloying balance (including controlled phosphorus content) promotes the formation of a protective patina that slows further corrosion, making this grade suitable for welded, riveted or bolted construction where long-term durability and weight savings are priorities.

Key features

• Weathering / atmospheric corrosion resistance: forms a stable protective rust layer that reduces the need for repetitive coatings in many environments.
• Low-alloy, high-strength: provides good structural performance while enabling lighter designs compared with conventional carbon steels.
• Available dimensional range: thickness 3 mm – 200 mm; width 1000 mm – 4000 mm; length 1000 mm – 18000 mm.
• Typical applications: bridges and bridge components, building façades and architectural panels, outdoor structural members, towers and pylons, transport equipment, heavy machinery frames and other exposed structural uses.

Supply details

• Standard: ASTM A242 Type 1 weathering steel plate.
• Minimum order quantity: 10 pieces.
• Delivery: prompt supply from stock where available; production lead time typically 10–40 days.
• Additional processing services: precision cutting, welding, drilling, grinding (available on request).

Commercial and quality notes

• Supplied as steel plates / sheets for industrial and construction use. Inspection, mill test certificates and packaging options can be arranged to meet project or export requirements.
• For quotations, required sizes and quantities, or to request additional processing and inspection options, please submit your specifications through the inquiry channel on this platform.