ASTM A871 Structural Steel Plate

ASTM A871 Steel Plate is an ideal material for structural applications, particularly in the construction of tubular structures and poles. This high-strength weathering steel has atmospheric corrosion resistance, making it perfect for outdoor applications where exposure to weather and environmental conditions is a concern. The steel exhibits properties similar to COR-TEN® steel, meaning it forms a stable, rust-like appearance that protects the material from further corrosion without the need for painting or coating.

Our Factory

OUR-ADVANTAGE

Partners

Honors and Clients

APPLICATION-SCENARIOS

Send Us Email​

Product Introduction

Overview:

ASTM A871 Steel Plate is an ideal material for structural applications, particularly in the construction of tubular structures and poles. This high-strength weathering steel has atmospheric corrosion resistance, making it perfect for outdoor applications where exposure to weather and environmental conditions is a concern. The steel exhibits properties similar to COR-TEN® steel, meaning it forms a stable, rust-like appearance that protects the material from further corrosion without the need for painting or coating.

Available Sizes

Leeco® Steel stocks the following standard sizes of ASTM A871, but custom sizes may be available upon request.

Grade Thickness Width Length
Grade 60 3/16″ – 1 1/4″ 48″ – 120″ Up to 650″
Grade 65 3/16″ – 1 1/4″ 48″ – 120″ Up to 650″
  • Thickness: 3/16″ to 1 1/4″

  • Width: 48″ to 120″

  • Length: Up to 650″ (custom sizes available)


Material Properties

The material properties for ASTM A871 are in accordance with ASTM standards, ensuring high strength and long-lasting durability. These include yield strength, tensile strength, and elongation percentage, which are critical for structural integrity.

Grade Yield Point (ksi) Tensile Strength (ksi) Min. 8” Elongation (%)
Grade 60 60 75 16
Grade 65 65 80 15
  • Grade 60: Yield strength of 60 ksi, tensile strength of 75 ksi, and 16% elongation.

  • Grade 65: Yield strength of 65 ksi, tensile strength of 80 ksi, and 15% elongation.

These high-strength properties make ASTM A871 an excellent choice for structural applications that demand durability and long-term performance.


Chemical Composition

ASTM A871 steel can be produced in three chemical composition types, each offering specific benefits for corrosion resistance and mechanical performance.

Element Type I Type II Type IV
Carbon (C) 0.19% max 0.20% max 0.17% max
Manganese (Mn) 0.80-1.35% 0.75-1.35% 0.50-1.20%
Phosphorus (P) 0.030% max 0.030% max 0.030% max
Sulfur (S) 0.030% max 0.030% max 0.030% max
Silicon (Si) 0.30-0.65% 0.15-0.50% 0.25-0.50%
Nickel (Ni) 0.40% max 0.50% max 0.40% max
Chromium (Cr) 0.40-0.70% 0.40-0.70% 0.40-0.70%
Copper (Cu) 0.25-0.40% 0.20-0.40% 0.30-0.50%
Vanadium (V) 0.02-0.10% 0.01-0.10% 0.005-0.05%
Molybdenum (Mo) 0.10% max
Columbium (Cb) 0.005-0.05%
  • Type I: Offers a balanced composition of manganese, copper, and chromium for standard weathering applications.

  • Type II: Slightly more controlled silicon and nickel content for environments requiring moderate corrosion resistance.

  • Type IV: Includes molybdenum and columbium for enhanced resistance to harsh environments, ideal for severe weather and industrial use.


ASTM A871 Type I vs Type II vs Type IV Comparison

Feature Type I Type II Type IV
Carbon Content 0.19% max 0.20% max 0.17% max
Manganese Content 0.80-1.35% 0.75-1.35% 0.50-1.20%
Nickel Content 0.40% max 0.50% max 0.40% max
Corrosion Resistance Good Moderate Excellent
Best Use Standard weathering steel Moderate corrosion areas Severe environmental conditions

Product Show

Supplier of various types of carbon steel

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

Related Products

Scroll to Top