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304 Stainless Steel Square Tubing 40x40mm 60x60mm 80x80mm Custom Cut
| Place of Origin | China |
|---|---|
| ブランド名 | DELTA |
| 証明 | ISO |
| Model Number | 304 316L 310S 2205 |
| Minimum Order Quantity | 500 kgs |
| 価格 | 5-10 USD/Kg |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 12 days based on the quantity |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 3 Ton per week |
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x商品の詳細
| Products | Stainless Steel Square Pipe | Grade | 304 316L 310S 321 2205 |
|---|---|---|---|
| Diameter | DN10 - DN400 | Length | 6m or custom cutting any length as request |
| Standard | ASTM EN | Service | Cutting |
| Loading Port | Shanghai Port | Thickness | 4.0 - 50.0mm |
| ハイライト | 304 stainless steel square tubing,40x40mm stainless steel pipe,custom cut stainless steel tubing |
||
製品の説明
Custom Cut 304 Stainless Steel Square Tubing 40x40mm 60*60mm 80*80mm Matte Surface
Product Specifications
| Attribute | Value |
|---|---|
| Products | Stainless Steel Square Pipe |
| Grade | 304 316L 310S 321 2205 |
| Diameter | DN10 - DN400 |
| Length | 6m or custom cutting any length as request |
| Standard | ASTM EN |
| Service | Cutting |
| Loading Port | Shanghai Port |
| Thickness | 4.0 - 50.0mm |
Product Description
304 stainless steel square tubes are versatile, corrosion-resistant components widely used across industries. As an austenitic stainless steel, 304 offers an ideal blend of formability, strength, and resistance to rust, making it the most popular choice for general-purpose applications where durability meets cost-effectiveness.
What Are 304 Stainless Steel Square Tubes?
304 stainless steel square tubes are hollow, square-sectioned pipes made from 304 alloy--a chromium-nickel austenitic steel. Their square shape provides structural rigidity, making them suitable for both load-bearing and decorative roles. Unlike carbon steel, 304 resists oxidation and corrosion in most environments, thanks to its high chromium content (18-20%), which forms a protective oxide layer on the surface. This grade is non-magnetic in its annealed state and can be easily welded, bent, or fabricated into complex shapes.
Chemical Composition
The chemical makeup of 304 stainless steel defines its key properties, with strict ranges outlined in industry standards:
| Element | Content Range (%) | Function |
|---|---|---|
| Chromium (Cr) | 18.0-20.0 | Forms a passive oxide layer, preventing rust and corrosion. |
| Nickel (Ni) | 8.0-10.5 | Stabilizes the austenitic structure, enhancing ductility and toughness. |
| Carbon (C) | ≤0.08 | Adds strength but is limited to avoid carbide precipitation during welding. |
| Manganese (Mn) | ≤2.0 | Aids in deoxidation and improves workability. |
| Silicon (Si) | ≤1.0 | Enhances high-temperature oxidation resistance. |
| Phosphorus (P) | ≤0.045 | Controlled to prevent brittleness. |
| Sulfur (S) | ≤0.03 | Minimized to maintain weldability and corrosion resistance. |
Mechanical Properties
304 stainless steel square tubes balance strength and flexibility, making them adaptable to diverse applications:
| Property | Typical Value | Test Standard |
|---|---|---|
| Tensile Strength | 515-690 MPa | ASTM E8 / EN 10002-1 |
| Yield Strength (0.2% offset) | ≥205 MPa | ASTM E8 / EN 10002-1 |
| Elongation (in 50mm) | ≥40% | ASTM E8 / EN 10002-1 |
| Hardness (Brinell) | ≤201 HB | ASTM E10 / EN ISO 6506-1 |
| Modulus of Elasticity | ~193 GPa | - |
| Density | 8.0 g/cm³ | - |
Specifications
304 square tubes are available in a wide range of sizes to fit specific needs:
- Side Length: 6mm to 300mm (common sizes: 10×10mm, 40×40mm, 100×100mm)
- Wall Thickness: 0.5mm to 10mm (thicker walls for structural or high-pressure use)
- Length: Standard 6m; customizable up to 12m for large projects
- Finish Options:
- Mill finish (2B): Smooth, matte surface for industrial use
- Polished (BA/mirror): Shiny, reflective surface for decorative applications
- Brushed: Satin texture, popular in architectural trim
Product Standards
304 square tubes adhere to global standards to ensure consistency and quality:
| Standard | Issuing Body | Application |
|---|---|---|
| ASTM A554 | ASTM International | Welded stainless steel mechanical tubing |
| EN 10217-7 | European Committee | Welded tubes for pressure (stainless steel) |
| JIS G3446 | Japanese Industrial Standards | Stainless steel square tubes |
| GB/T 12771 | China National Standard | Welded stainless steel pipes |
Applications
304 square tubes are favored in environments where general corrosion resistance is required:
- Architecture & Construction: Handrails, balustrades, window frames, and decorative facades (resists weathering)
- Food & Beverage Industry: Conveyors, brewing equipment, and storage tanks (easy to clean, non-toxic)
- Medical Equipment: Hospital bed frames, surgical instrument trays (hygienic and rust-proof)
- Automotive: Exhaust components, trim, and structural parts (resists road salts moderately)
- Household Appliances: Refrigerator shelves, oven doors, and dishwasher parts (withstands moisture)
- Water Treatment: Piping, filter housings, and pump components (resists clean water corrosion)
Key Advantages
- Excellent Corrosion Resistance: Performs well in most atmospheric conditions, fresh water, and mild chemicals
- High Formability: Easily welded, bent, or cut, making it suitable for custom fabrication
- Cost-Effective: More affordable than higher-alloy grades like 316, ideal for budget-sensitive projects
- Aesthetic Appeal: Polished finishes offer a sleek, modern look for decorative uses
- Hygienic: Non-porous surface resists bacterial growth, meeting food and medical safety standards
Similar Grades
These grades are often compared to 304 for specific use cases:
| Grade | Key Difference from 304 | Best For |
|---|---|---|
| 304L | Lower carbon (≤0.03%) to reduce carbide precipitation | Welded structures requiring maximum corrosion resistance |
| 316 | Contains molybdenum (2-3%) for better chloride resistance | Marine, coastal, or high-salt environments |
| 303 | Higher sulfur for improved machinability | Parts requiring intricate machining (e.g., fasteners) |
| 430 | Ferritic (no nickel); lower cost but less corrosion resistance | Dry, indoor applications (e.g., appliance trim) |
Summary: Why 304 Square Tubes?
304 stainless steel square tubes are the workhorse of stainless steel tubing, offering a winning combination of corrosion resistance, formability, and affordability. They excel in general-purpose applications, from construction to food processing, where durability and versatility are key. For most non-aggressive environments, 304 delivers reliable performance without the premium cost of higher-grade alloys.
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