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Introduction
ASTM A500
covers cold-formed welded and seamless carbon steel structural tubing in round,
square, rectangular, and special shapes. These structural steel tubes are
designed for welded, bolted, and riveted construction applications requiring
high strength, durability, and structural reliability.
ASTM A500
structural steel tubing is widely used in construction, infrastructure,
industrial fabrication, and engineering projects where excellent load-bearing
performance and dimensional accuracy are essential.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A500
structural steel tubes, supplying high-quality hollow sections for structural
and industrial applications.
Applicable Standard
Standard Specification:
ASTM A500
Organization: ASTM International
Title: Standard Specification for Cold-Formed Welded and Seamless Carbon Steel
Structural Tubing in Rounds and Shapes
This
specification covers welded and seamless carbon steel structural tubing for structural
and construction purposes.
Forms of Supply
ASTM A500
structural steel tubes are supplied in the following forms:
Round hollow
sections (RHS)
Square hollow sections (SHS)
Rectangular hollow sections (RHS)
Seamless structural tubes
Welded structural tubes
Cut-to-length tubes
Supply
Condition
Cold formed
As-welded condition
Normalized condition (if required)
Surface
Finish
Black finish
Galvanized finish
Painted finish
Shot blasted finish
Standard
Sizes
Outside
Diameter: 21.3 mm to 610 mm
Wall Thickness: 1.6 mm to 25 mm
Length: Up to 12 meters or as required
Grades Covered Under ASTM A500
Grade A
Grade B
Grade C
Grade D
These grades
offer varying levels of strength and structural performance for construction
and engineering applications.
Chemical Composition of ASTM A500 Structural Steel
Tubes (%)
|
Element |
Grades B and D – Heat Analysis |
Grades B and D – Product Analysis |
Grade C – Heat Analysis |
Grade C – Product Analysis |
|
Carbon, max |
0.26 |
0.30 |
0.23 |
0.27 |
|
Manganese, max |
1.35 |
1.40 |
1.35 |
1.40 |
|
Phosphorus, max |
0.035 |
0.045 |
0.035 |
0.045 |
|
Sulfur, max |
0.035 |
0.045 |
0.035 |
0.045 |
|
Copper, min |
0.20 |
0.18 |
0.20 |
0.18 |
Notes:
- For each reduction of 0.01
percentage point below the specified maximum for carbon, an increase of
0.06 percentage point above the specified maximum for manganese is
permitted, up to a maximum of 1.50% by heat analysis and 1.60% by product
analysis.
- Copper-containing steel shall be
specified in the purchase order.
Tensile
Requirements
|
Requirement |
Grade B |
Grade C |
Grade D |
|
Tensile strength,
min, psi [MPa] |
58,000 [400] |
62,000 [425] |
58,000 [400] |
|
Yield strength,
min, psi [MPa] |
46,000 [315] |
50,000 [345] |
36,000 [250] |
|
Elongation in 2
in. [50 mm], min, % |
23 |
21 |
23 |
Notes:
- Applies to specified wall
thicknesses equal to or greater than 0.180 in. [4.57 mm].
- For lighter wall thicknesses,
minimum elongation values shall be calculated using the formula:
Percent elongation in 2 in. [50 mm] = 61t + 12, rounded to the nearest percent. - For A500M tubing:
Percent elongation in 50 mm = 24t + 12, rounded to the nearest percent. - Minimum elongation values apply
only to tests performed prior to shipment of the tubing.
Key Features of ASTM A500 Structural Steel Tubes
Excellent
structural strength
Good weldability and machinability
High dimensional accuracy
Suitable for heavy load-bearing applications
Available in round, square, and rectangular sections
Good surface finish and durability
Cost-effective structural solution
Applications of ASTM A500 Structural Steel Tubes
ASTM A500
tubes are widely used in industries requiring reliable structural performance.
Construction
Industry
• Building frameworks
• Structural columns and supports
Infrastructure
Projects
• Bridges and towers
• Industrial sheds
Engineering
& Fabrication
• Machinery structures
• Equipment frames
Industrial
Applications
• Conveyor systems
• Storage racks and platforms
Heat Treatment
ASTM A500
tubes are generally supplied in cold-formed condition
Normalizing may be performed if required
Heat treatment improves structural uniformity and toughness
Conclusion
ASTM A500
structural steel tubes provide a reliable and economical solution for
construction and engineering applications. With excellent strength,
weldability, and availability in multiple shapes and grades, these hollow
sections are ideal for structural frameworks and industrial fabrication
projects.
Ladhani
Metal Corporation supplies ASTM A500 structural steel tubes in various grades,
sizes, and finishes, ensuring high-quality products for construction,
infrastructure, and industrial applications.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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 - Chemical Composition, Tensile requirement and Applications){kind=link}