ASTM A242 Specification

ParameterDescription
StandardASTM A242
MaterialCorten Steel (Weathering Steel)
GradesASTM A242 Type 1, ASTM A242 Type 2
Thickness Range2–460 mm, 6 mm–200 mm, and 2–500 mm
Width Range1500–4050 mm, 500–2000 mm, and Up to 4.8 meters
Length Range3000–15000 mm, 6000–12000 mm, and Up to 12 meters or 40 ft
Surface FinishHot Rolled, Cold Rolled, Pickled & Oiled
Tensile Strength485 - 620 MPa
Yield Strength≥ 345 MPa
Elongation≥ 21%
ApplicationsBridges, Building Facades, Rail Cars, Shipping Containers, Outdoor Structures, Landscaping
Category:

Description

ASTM A242 Corten Steel Plate

ASTM A242 Corten Steel Plate is a high-strength, low-alloy structural steel with enhanced atmospheric corrosion resistance. It is designed to form a stable rust-like appearance when exposed to weather, reducing the need for painting and maintenance. This makes it ideal for structural and architectural applications.

  • ASTM A242 Type 1 – Commonly used in structural applications due to its excellent strength and corrosion resistance.
  • ASTM A242 Type 2 – Less common, primarily used in specific industrial applications requiring enhanced weathering properties.

Key Features:

  • Weathering Resistance: Forms a protective oxide layer, preventing further corrosion.
  • High Strength: Superior tensile strength for structural applications.
  • Low Maintenance: No need for painting, reducing lifecycle costs.
  • Aesthetic Appeal: Distinctive rustic appearance for architectural projects.

Dimensions

  • Thickness 2–460 mm, 6 mm–200 mm, and 2–500 mm.
  • Width 1500–4050 mm, 500–2000 mm, and Up to 4.8 meters.
  • Length 3000–15000 mm, 6000–12000 mm, and Up to 12 meters or 40 ft.

ASTM A242 properties

Chemical Composition

Element Composition (%)
Carbon (C) ≤ 0.15
Manganese (Mn) 0.20 – 0.50
Phosphorus (P) ≤ 0.15
Sulfur (S) ≤ 0.05
Silicon (Si) 0.25 – 0.75
Copper (Cu) 0.20 – 0.40
Chromium (Cr) 0.50 – 1.25
Nickel (Ni) ≤ 0.65

Mechanical Properties

Property Value
Tensile Strength 485 – 620 MPa
Yield Strength ≥ 345 MPa
Elongation ≥ 21%

Applications:

  • Bridges & Structural Supports
  • Facades & Architectural Designs
  • Railway Cars & Shipping Containers
  • Outdoor Sculptures & Landscaping

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