ASTM A1005 Gr.50 Black Plain End Helical Seam Welded Steel Tube For Fluid Transport
ASTM A1005 Grade 35 50 60 70 80 Welded Steel Tube Black Plain End Helical Seam Welded Steel Tube for Fluid Transport
Material
ASTM A1005 is a specification for welded steel tubes designed for fluid transport. These tubes are characterized by their helical seam welding, which enhances their structural integrity and resistance to various stresses. The black plain end finish provides a robust surface suitable for various applications.
Specification
The ASTM A1005 specification covers several grades of welded steel tubes, including Grade 35, 50, 60, 70, and 80. Each grade has specific mechanical properties and chemical compositions that make them suitable for different applications in fluid transport.
Key Features
- Helical Seam Welding: Provides enhanced strength and flexibility.
- Black Plain End: Suitable for direct connections and fittings.
- Versatile Applications: Suitable for various fluid transport systems.
- Corrosion Resistance: Depending on the grade, some tubes may offer enhanced resistance to corrosion.
Chemical Composition
| Grade | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Iron (Fe) |
|---|---|---|---|---|---|---|
| 35 | 0.18 max | 0.60 - 0.90 | 0.04 max | 0.05 max | 0.10 - 0.40 | Balance |
| 50 | 0.20 max | 0.60 - 0.90 | 0.04 max | 0.05 max | 0.10 - 0.40 | Balance |
| 60 | 0.25 max | 0.60 - 0.90 | 0.04 max | 0.05 max | 0.10 - 0.40 | Balance |
| 70 | 0.30 max | 0.60 - 0.90 | 0.04 max | 0.05 max | 0.10 - 0.40 | Balance |
| 80 | 0.35 max | 0.60 - 0.90 | 0.04 max | 0.05 max | 0.10 - 0.40 | Balance |
Mechanical Properties
| Grade | Yield Strength (ksi) | Tensile Strength (ksi) | Elongation (%) | Hardness (Rockwell) |
|---|---|---|---|---|
| 35 | 35 | 55 | 20 | B70 |
| 50 | 50 | 70 | 20 | B75 |
| 60 | 60 | 80 | 20 | B80 |
| 70 | 70 | 90 | 20 | B85 |
| 80 | 80 | 100 | 20 | B90 |
Steel Grade
The ASTM A1005 specification includes various grades, each designed for specific applications and performance requirements. The grades range from 35 to 80, with increasing strength and hardness.
Application
ASTM A1005 welded steel tubes are primarily used in fluid transport applications, including:
- Water supply systems
- Oil and gas pipelines
- Chemical processing
- HVAC systems
- Industrial fluid transport
Possible Alternative Grades
While ASTM A1005 provides a robust selection of grades, alternative grades may be considered based on specific requirements:
- ASTM A53: Commonly used for structural and fluid transport applications.
- ASTM A500: Suitable for structural applications with similar mechanical properties.
- ASTM A252: Used for piling and structural applications, offering good weldability.
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