ASTM A787 is a standard specification for electric-resistance-welded metallic-coated carbon steel mechanical tubing. The tubing is made of a carbon steel base material with an aluminum coating applied by the hot-dip process. This combination of materials provides corrosion resistance, durability, and strength to the tubing.

Below is a table summarizing the key information about ASTM A787 Aluminum-Steel Tube:

Chemical Composition

The chemical composition of ASTM A787 Aluminum-Steel Tube is specified by the individual steel grades. The following table provides the chemical composition for each steel grade:

Mechanical Properties

The mechanical properties of ASTM A787 Aluminum-Steel Tube vary depending on the steel grade and the specified wall thickness. The following table provides the minimum mechanical properties for each steel grade:

Applications

ASTM A787 Aluminum-Steel Tube is commonly used in the automotive industry for structural and hydraulic applications. It is also used in construction, industrial, and agricultural equipment applications. The combination of strength, durability, and corrosion resistance make it a popular choice for a variety of applications where reliability is critical.

Steel Grades

ASTM A787 Aluminum-Steel Tube has four steel grades: Type 1, Type 2, Type 3, and Type 4. The steel grades are differentiated by their aluminum coating thickness and composition. Type 1 has the thinnest coating and Type 4 has the thickest coating.

Specifications

ASTM A787 Aluminum-Steel Tube is manufactured to meet the ASTM A787 specification. The specification covers electric-resistance-welded metallic-coated carbon steel mechanical tubing for use in mechanical and structural applications. The tubing is available in various shapes and sizes, including round, square, and rectangular shapes.

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