ASTM A513 Welded Carbon Steel Tubes

Instruction

ASTM A513 Welded Carbon Steel Tubes Cold Drawn for Mechanical Industries

 

Material
ASTM A513 is a specification for welded carbon steel tubes that are cold drawn for use in mechanical industries. This standard covers various grades of carbon steel and specifies the requirements for chemical composition and mechanical properties.

 

Specification
The specification ASTM A513 outlines the following requirements for welded carbon steel tubes:
1.Size Range: The tubes shall have an outside diameter ranging from 0.405 inches (10.29 mm) to 2.500 inches (63.50 mm), and a wall thickness from 0.020 inches (0.51 mm) to 0.218 inches (5.54 mm).
2.Length: The tubes may be supplied in random lengths or cut to specific lengths as agreed upon between the manufacturer and the purchaser.
3.Straightness: The tubes shall be reasonably straight, with a maximum deviation of 0.0125 inches (0.32 mm) per foot (305 mm) of length.
4.Tolerances: The dimensional tolerances for the outside diameter, wall thickness, and length of the tubes are specified in the ASTM A513 standard.

 

Chemical Composition
The chemical composition requirements for ASTM A513 welded carbon steel tubes are as follows:

 

Element	Composition Range (%)
Carbon	0.08-0.25
Manganese	0.30-0.60
Phosphorus	0.040 (max)
Sulfur	0.050 (max)

 

Mechanical Properties
The mechanical properties of ASTM A513 welded carbon steel tubes vary depending on the grade. The minimum mechanical properties specified for the different grades are:

 

Property	Minimum Value
Tensile Strength	55,000 psi (380 MPa)
Yield Strength	35,000 psi (240 MPa)
Elongation	25% (in 2 inches)
Hardness (BHN)	100 (approximate)

 

Steel Grade
ASTM A513 includes several steel grades, such as 1008, 1010, 1015, 1020, etc. These grades represent different carbon content and provide varying mechanical properties. The selection of the appropriate grade depends on the specific application requirements.

 

Application
ASTM A513 welded carbon steel tubes are commonly used in various mechanical industries. These tubes find applications in areas such as:
• Automotive components
• Machinery parts
• Agricultural equipment
• Construction machinery
• Furniture manufacturing
• Bicycle frames
• Exercise equipment
• And more
The cold drawn process used in manufacturing these tubes ensures improved dimensional accuracy, surface finish, and mechanical properties, making them suitable for diverse mechanical applications.