ASTM A588 Corten Steel

ASTM A588 is a high-strength, low-alloy structural steel with improved atmospheric corrosion resistance, often referred to as “weathering steel.” It is commonly used in outdoor and structural applications where exposure to harsh weather conditions is a concern. Below are the details, specifications, mechanical properties, and chemical composition of ASTM A588 steel:
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Chemical Composition (Percentage by Weight):

Carbon (C) Manganese (Mn) Phosphorus (P) Sulfur (S) Silicon (Si Chromium (Cr) Nickel (Ni) Copper (Cu) Vanadium (V) Nitrogen (N)
0.15% min 0.80-1.35% 0.03% max 0.03% max 0.15-0.50% 0.40-0.70% 0.25-0.50% 0.20-0.50% 0.02-0.10% 0.010% max

Mechanical Properties:

Tensile Strength (at room temperature) Yield Strength (at room temperature) Elongation (in 2 inches Charpy V-Notch Impact Test
485-690 MPa (70-100 ksi) 345 MPa (50 ksi) min 18% min 21 J (15 ft-lbf) minimum at -40°C (-40°F)

Typical Properties:

Density Thermal Expansion Electrical Conductivity Poisson’s Ratio Modulus of Elasticity (Young’s Modulus
7.85 g/cm³ (0.284 lb/in³) 13.1 x 10^(-6)/°C (7.3 x 10^(-6)/°F) 17% IACS (International Annealed Copper Standard 0.29 205 GPa (29.7 x 10^6 psi)

Applications for ASTM A588 steel include:

Bridges: ASTM A588 is commonly used in bridge construction due to its high-strength properties and corrosion resistance. It can reduce the need for ongoing maintenance.

Buildings and Architectural Features: The weathering appearance of ASTM A588 steel makes it a popular choice for building facades, outdoor sculptures, and other architectural elements.

Railway Cars: This steel is used for the construction of railway cars, particularly those exposed to outdoor conditions.

Transmission Towers: It is used in the construction of transmission and communication towers.

Mining Equipment: Some mining equipment and machinery components are made from ASTM A588 steel due to its durability.

It’s important to note that ASTM A588 steel is available in various grades and forms, including plates, bars, and shapes, to suit different applications and structural requirements. Additionally, specific mechanical properties and chemical compositions can vary depending on the product and grade within the ASTM A588 specification. Engineers and designers should refer to the relevant ASTM standards and consult with manufacturers for precise product information.


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