ASTM A513, ASTM A500 Grade B Square Steel Tube

Square Steel Tube, is a welded structural steel tube with a internal weld seam present. Available in A513 or A500 Grade B depending on its size and wall thickness, Square Steel Tube is widely used in industrial maintenance, agricultural implements, transportation equipment, ornamental, etc.

It is produced in round, square and rectangular shapes in a broad range of sizes and gauges. ASTM A513 specification covers electric resistance welded carbon and alloy tubing for use as mechanical tubing. ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes.

Specifications: ASTM A513, ASTM A500 Grade B
Applications: frames, roll cages, truck racks, trailers, railings, etc.
Workability: Easy to Weld, Cut, Form and Machine
Mechanical Properties: Brinell = 63, Tensile = 58,000 +/-, Yield = 46,000 +/-

ASTM A513 Characteristics & Applications

ASTM A513 Type 1 tube is produced from low carbon steel. Typically available in hot rolled black, hot rolled, P&O. Tubing with walls heavier than 18ga are produced from hot rolled steel. A513 Type 1 is produced to closer dimensional tolerances than A500 and chemistries that allow for bending. A513 type 1 tube is used for furniture, storage racks, machine components, fences and more.

Produced as A-513, Type 1 and 2 in the as welded condition and furnished in 1008 to 1015 steel, it is the lowest cost mechanical tubing available. Wall thickness 18 gauge and lighter are produced from cold rolled steel. Heavier than 18 gauge is produced from hot rolled steel. A513 Type 2 Mechanical ERW tube is used in environments where cosmetically appealing surfaces and light weight are required. Examples include display racks, furniture, greenhouses, exercise equipment, and many others.

ASTM A500 characteristics & Applications

ASTM A500 is the most common specification in North America for Hollow Structural Sections (HSS). ASTM A500 applications include structural supports, building columns, highway signs, oil field services and communication towers.