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304 Welded Stainless Steel Pipe
Material and Specification
The 304 welded stainless steel pipe is made from a corrosion-resistant alloy known as stainless steel, specifically grade 304. This grade of stainless steel contains a minimum of 18% chromium and 8% nickel, offering excellent corrosion resistance and durability. The pipe is fabricated through a welding process, resulting in a seamless and sturdy structure.
The specifications for 304 welded stainless steel pipe are as follows:
- Pipe Type: Welded
- Material: Stainless Steel (Grade 304)
- Diameter Range: Varies based on application
- Wall Thickness: Varies based on application
Length: Customizable as per requirements
Key Features
304 welded stainless steel pipes offer several key features that make them suitable for diverse applications:
- Corrosion Resistance: Due to its high chromium content, 304 stainless steel has superior resistance to corrosion, making it suitable for use in demanding environments.
- High Strength: The alloy composition of 304 stainless steel provides it with excellent tensile and yield strength, ensuring the durability and longevity of the pipe.
- Versatility: 304 welded stainless steel pipes can be used in various industries, including construction, automotive, and food processing, due to their versatility and compatibility with different applications.
- Easy Maintenance: These pipes are easy to clean and maintain, thanks to their non-porous surface and resistance to staining or rusting.
Aesthetically Pleasing: The smooth and polished finish of 304 stainless steel pipes enhances their visual appeal, making them suitable for decorative applications as well.
Chemical Composition
The chemical composition of 304 welded stainless steel pipe is outlined in the table below:
| Element | Percentage(%) |
| Chromium (Cr) | 18 - 20 |
| Nickel (Ni) | 8 - 10.5 |
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2 max |
| Silicon (Si) | 0.75 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.03 max |
Mechanical Properties
The mechanical properties of 304 welded stainless steel pipe are summarized in the table below:
| Property | Value |
| Tensile Strength | 515 - 690 MPa |
| Yield Strength | 205 - 310 MPa |
| Elongation | 35 - 60% |
| Hardness (Brinell) | 150 - 180 HB |
Physical Properties
The physical properties of 304 welded stainless steel pipe are as follows:
| Property | Value |
| Density | 8.0 g/cm³ |
| Melting Point | 1400 - 1450°C |
| Electrical Conductivity | 1.45% IACS |
| Thermal Conductivity | 16.2 W/m·K |
| Coefficient of Expansion | 17.2 µm/m·K |
Process Performance
The process performance of 304 welded stainless steel pipe is provided in the table below:
| Property | Performance |
| Weldability | Excellent |
| Formability | Excellent |
| Machinability | Fair |
| Heat Resistance | Good |
| Corrosion Resistance | Excellent |
Steel Grade
The steel grade for 304 welded stainless steel pipe is AISI 304, also known as SAE 304 or UNS S30400.
Application
The 304 welded stainless steel pipe finds applications in various industries, including:
- Construction: Used for structural support, handrails, and architectural elements.
- Automotive: Utilized in exhaust systems and components.
- Food Processing: Suitable for conveying liquids and gases in food production and processing.
- Petrochemical: Used for transporting corrosive substances in the petrochemical industry.
HVAC Systems: Employed in the construction of heating, ventilation, and air conditioning systems.
Possible Alternative Grades
Although 304 stainless steel is a commonly used alloy, certain alternative grades can be considered for specific requirements. Some possible alternative grades include:
- 316 Stainless Steel: Offers increased resistance to corrosion and higher strength at elevated temperatures.
- 321 Stainless Steel: Exhibits advanced resistance to intergranular corrosion, particularly in high-temperature applications.
- 409 Stainless Steel: Provides enhanced heat resistance and is often used in automotive exhaust systems.
- 430 Stainless Steel: Features good formability and is commonly used in decorative applications.
In conclusion, the 304 welded stainless steel pipe is a versatile and durable option for various industries, offering excellent corrosion resistance, high strength, and easy maintenance. Its chemical composition, mechanical and physical properties, along with its superior process performance, make it a reliable choice for numerous applications.
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