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ASTM A513 VS ASTM A519 Mechanical Tubing

Date:2026-06-12View:5Tags:astm a513 mechanical tubing, astm a519 mechanical tubing
When selecting mechanical tubing for manufacturing, construction, automotive, or industrial applications, two ASTM standards are often compared: ASTM A513 and ASTM A519. While both standards cover carbon steel and alloy steel mechanical tubing, they differ significantly in manufacturing processes, mechanical properties, dimensional accuracy, cost, and intended use.


ASTM A519 Mechanical Tubing


What is ASTM A513 Mechanical Tubing?

ASTM A513 is the standard specification for resistance-welded carbon steel and alloy steel mechanical tubing. This specification covers tubing made from hot-rolled or cold-rolled steel strip and formed and welded into a tubular shape.

ASTM A513 Tubing Types

ASTM A513 includes the following manufacturing categories:


Type

Description

Type 1A

Hot-Rolled ERW Tubing

Type 1B

Hot-Rolled Pickled & Oiled ERW Tubing

Type 2

Cold-Rolled ERW Tubing

Type 3

Hot-Rolled DOM Tubing

Type 4

Cold-Rolled DOM Tubing

Type 5

Mandrel Drawn Tubing

Type 6

Special Smooth ID Tubing



What is ASTM A519 Mechanical Tubing?

ASTM A519 covers a variety of grades of carbon and alloy steel mechanical tubing, including both hot-rolled and cold-rolled processes. This standard primarily produces seamless tubing, available in various sizes such as round, square, and rectangular. The seamless structure significantly improves the strength, compressive strength, fatigue resistance, impact toughness, and processability of the tubing.

ASTM A513 vs. A519 Mechanical Tubing


Criteria

ASTM A513 Mechanical Tubing

ASTM A519 Mechanical Tubing

Material & Process

 Resistance-welded carbon and alloy steel tubing.  Can be cold or hot rolled.

Seamless carbon and alloy steel mechanical tubing.  Available in both hot-finished and cold-finished conditions.

Shapes & Sizes

Available in various shapes: round, square, rectangular, and special shapes.  Round tube: 0.500-2.00 inches. Square pipe: 0.500-1.500 inches.

Primarily focuses on seamless tubing.  Available in round, square, and rectangular profiles.

Performance Standards

Offers increased ductility with tightly controlled carbon steel grades.  ASTM A513 1010, ASTM A513 1020, ASTM A513 1026, ASTM A513 4130.

Detailed mechanical property requirements.  Includes hardness, tensile, and non-destructive tests.

Applications

Widely used in construction, bridges, marine navigation, and oil and gas industry.

Used in applications requiring machining, heat treating, close tolerances, and specific physical properties.

Chemical Composition

Made of 1008-1015 steel, primarily iron with trace amounts of carbon.

Varies by grade, with specific requirements for carbon, manganese, phosphorus, silicon, and other elements.

Environmental Focus

Considers environmental performance and sustainability.

Not specifically highlighted, but quality and performance imply use of stringent production standards.

Certification & Marking

General focus on quality and performance standards.

Includes specific certification requirements for government orders.

Tolerances & Finish

Specific dimensional tolerances and shapes available as per project requirements.

Detailed allowances for machining, decarburization, and camber.



FAQ About ASTM A513 and ASTM A519

 

Is ASTM A519 stronger than ASTM A513?

 

Yes. ASTM A519 seamless tubing generally offers higher tensile strength, yield strength, and fatigue resistance because it contains no welded seam.

 

Can ASTM A513 replace ASTM A519?

 

In non-critical applications, ASTM A513 can often replace ASTM A519 and reduce costs.

 

However, for hydraulic cylinders, pressure systems, and high-stress mechanical components, ASTM A519 is usually required.

 

Is ASTM A519 seamless or welded?

 

ASTM A519 is a seamless mechanical tubing specification.

 

What is the most common ASTM A513 grade?

 

The most widely used grades are:

 

ASTM A513 1010

ASTM A513 1020

ASTM A513 1026

What is the most common ASTM A519 grade?

 

Popular grades include:

 

ASTM A519 1020

ASTM A519 1026

ASTM A519 4130

ASTM A519 4140


Summary

ASTM A513 and ASTM A519 are both important standards for mechanical tubing, but their applications differ.

ASTM A513 offers excellent dimensional control and shape flexibility, making it ideal for structural and general mechanical applications. ASTM A519 features seamless construction, superior strength, higher fatigue resistance, and enhanced pressure resistance, making it suitable for demanding engineering applications.


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