ASTM A513/A513M-20a Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing

ASTM A513/A513M-20a test method determines the use of electric-resistance-welded carbon and alloy steel tubing in mechanical tubing. The tubing of different shapes and grades is covered under this method. The final results of this method are displayed keeping in view the international standards and inch-pound units.

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ASTM A513/A513M-20a Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing

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Precision-driven testing for dimensional accuracy and compliance

Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

ASTM A513/A513M-20a specifies requirements for electric-resistance-welded (ERW) carbon and alloy steel mechanical tubing. The standard defines mechanical properties, chemical composition, manufacturing methods, and dimensional tolerances to ensure consistent performance.

This specification is widely used in automotive, machinery, and structural applications where precision, strength, and surface finish are important. It ensures that mechanical tubing meets required performance and fabrication standards.

Scope, Applications, and Benefits

Scope

ASTM A513 covers ERW mechanical tubing produced in various shapes and grades. The standard ensures compliance with mechanical strength, chemical composition, dimensional accuracy, and weld integrity.

The standard evaluates:

Mechanical properties such as tensile and yield strength
Chemical composition of carbon and alloy steel
Weld seam integrity and quality
Dimensional tolerances and surface finish
Suitability for mechanical applications

Applications

Automotive components and frames
Machinery and equipment parts
Structural and mechanical tubing systems
Hydraulic and pneumatic systems
Furniture and fabricated metal products
Industrial and engineering applications

Benefits

Ensures consistent quality and dimensional accuracy
Provides reliable mechanical performance
Supports precision fabrication and machining
Assists in material selection for mechanical applications
Enables comparison between tubing grades

Test Process

Material Identification

Tubing grade, size, and specifications are verified according to ASTM A513.

Mechanical Testing

Tensile and hardness tests are conducted to evaluate strength and durability.

Chemical Analysis

Elemental composition is analyzed to confirm compliance with material requirements.

Data Recording & Evaluation

Results are compared with ASTM A513 specifications for acceptance.

Technical Specifications

Parameter	Details
Applicable Materials	Carbon and alloy steel tubing
Manufacturing Method	Electric-resistance-welded (ERW)
Tensile Strength	~350 MPa to 700 MPa
Yield Strength	~250 MPa to 550 MPa
Wall Thickness	~0.5 mm to 12 mm
Outer Diameter	~6 mm to 200 mm

Instrumentation Used for Testing

Universal testing machine
Optical emission spectrometer (OES)
Hardness tester
Dimensional measurement tools
Weld inspection equipment
Data acquisition system

Results and Deliverables

Mechanical property test results
Chemical composition verification
Weld quality and dimensional inspection
Material grade confirmation
Test condition summary
ASTM compliance report

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Frequently Asked Questions

ASTM A513/A513M-20a includes chemical composition, tensile strength, yield strength, dimensional tolerances, wall thickness, and weld integrity, ensuring electric-resistance-welded mechanical tubing meets performance requirements for structural and mechanical applications.

ASTM A513/A513M-20a defines multiple types and grades, including Types 1, 2, 5, and 6, covering various mechanical and dimensional requirements for tubing.

ASTM A513/A513M-20a covers carbon steel and alloy steel tubing produced by electric-resistance welding processes for mechanical applications.

ASTM A513/A513M-20a tubing is used in automotive components, machinery, structural parts, and mechanical systems requiring consistent dimensions and mechanical performance.

ASTM A513/A513M-20a defines properties under controlled conditions and may not account for service environment, welding effects, or fabrication processes influencing long-term performance of mechanical tubing.