Description
ASTM A672 A45, A50, A55, B55, B60 Electric Fusion Welded Pipe For High-Pressure Service
Material Specification
ASTM A672 Electric Fusion Welded Pipe is a standard specification for electric fusion welded steel pipe suitable for high-pressure service at moderate temperatures. These pipes are manufactured from pressure vessel quality plate of various analyses and strength levels. The specification covers several grades, each with distinct chemical and mechanical properties, ensuring suitability for diverse applications.
Key Features
- High-Pressure Capability: Designed to withstand high-pressure environments, making them ideal for industrial applications.
- Versatility: Available in multiple grades to suit various requirements and conditions.
- Durability: Manufactured to provide long-lasting performance under challenging conditions.
- Quality Assurance: Produced following stringent quality standards to ensure reliability and safety.
Chemical Composition
The chemical composition of ASTM A672 Electric Fusion Welded Pipe varies depending on the grade. Below is a general representation of the typical elements found in these pipes:
| Element | A45 (%) | A50 (%) | A55 (%) | B55 (%) | B60 (%) |
|---|---|---|---|---|---|
| Carbon | 0.24 max | 0.24 max | 0.24 max | 0.24 max | 0.24 max |
| Manganese | 0.98 max | 0.98 max | 0.98 max | 0.98 max | 0.98 max |
| Phosphorus | 0.035 max | 0.035 max | 0.035 max | 0.035 max | 0.035 max |
| Sulfur | 0.035 max | 0.035 max | 0.035 max | 0.035 max | 0.035 max |
| Silicon | 0.13-0.45 | 0.13-0.45 | 0.13-0.45 | 0.13-0.45 | 0.13-0.45 |
Mechanical Properties
The mechanical properties of ASTM A672 Electric Fusion Welded Pipe are crucial for their performance in high-pressure applications. The table below outlines the typical mechanical properties for each grade:
| Property | A45 | A50 | A55 | B55 | B60 |
|---|---|---|---|---|---|
| Tensile Strength (MPa) | 415-550 | 485-620 | 515-655 | 515-655 | 550-690 |
| Yield Strength (MPa) | 240 min | 275 min | 290 min | 290 min | 320 min |
| Elongation (%) | 20 min | 20 min | 20 min | 20 min | 20 min |
Steel Grade
The ASTM A672 Electric Fusion Welded Pipe specification includes several grades, each designed for specific applications and conditions. The grades are differentiated based on their mechanical properties and chemical composition, allowing for tailored solutions in various industrial sectors.
Application
ASTM A672 pipes are widely used in industries such as:
- Oil and Gas: For transporting oil, gas, and other fluids under high pressure.
- Power Generation: In power plants for steam and water pipelines.
- Petrochemical: For processing and transporting chemicals.
- Construction: In structural applications requiring high strength and durability.
Possible Alternative Grades
While ASTM A672 Electric Fusion Welded Pipe offers a range of grades, alternative specifications may be considered based on specific requirements:
- ASTM A671: Similar to A672 but intended for atmospheric and lower temperature applications.
- ASTM A691: Covers larger diameter pipes and higher pressure applications.
- API 5L: Suitable for oil and gas pipeline transportation systems.
