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Technical Specifications
Product Overview
304 Stainless Steel Flat Bar is manufactured from premium grade 304 austenitic stainless steel, providing excellent corrosion resistance, formability, and weldability. This versatile flat bar product is ideal for structural applications, fabrication projects, and general engineering purposes.
Key Features:
- Excellent corrosion resistance in various environments
- Superior formability and machinability
- Non-magnetic in annealed condition
- Easy to weld and fabricate
- Cost-effective solution for structural applications
Manufacturing Process: Produced through hot rolling or cold drawing processes, followed by annealing treatment to achieve optimal mechanical properties and surface finish.
Applications: Structural frameworks, architectural trim, machine components, food processing equipment, chemical processing equipment, marine hardware, decorative applications, and general fabrication projects.
🧪 Chemical Composition
| Element | Min % | Max % | Typical % | ASTM A276 Requirement |
|---|---|---|---|---|
| Carbon (C) | - | 0.080 | 0.045 | ≤ 0.08 |
| Chromium (Cr) | 18.0 | 20.0 | 18.5 | 18.0-20.0 |
| Nickel (Ni) | 8.0 | 12.0 | 9.2 | 8.0-12.0 |
| Manganese (Mn) | - | 2.00 | 1.45 | ≤ 2.00 |
| Silicon (Si) | - | 0.75 | 0.42 | ≤ 0.75 |
| Phosphorus (P) | - | 0.045 | 0.028 | ≤ 0.045 |
| Sulfur (S) | - | 0.030 | 0.015 | ≤ 0.030 |
| Nitrogen (N) | - | 0.10 | 0.06 | ≤ 0.10 |
| Iron (Fe) | Balance | Balance | 70.1 | Balance |
⚙️ Mechanical Properties
| Property | ASTM Requirement | Typical Value | Test Method | Temperature |
|---|---|---|---|---|
| Tensile Strength | 515 MPa min | 620 MPa | ASTM A370 | Room Temp |
| Yield Strength (0.2%) | 205 MPa min | 310 MPa | ASTM A370 | Room Temp |
| Elongation | 40% min | 50% | ASTM A370 | Room Temp |
| Hardness (Brinell) | 201 HB max | 180 HB | ASTM E10 | Room Temp |
| Hardness (Rockwell B) | 92 HRB max | 88 HRB | ASTM E18 | Room Temp |
| Modulus of Elasticity | - | 200 GPa | ASTM E111 | Room Temp |
| Impact Energy (Charpy V) | - | 325+ J | ASTM E23 | Room Temp |
🔬 Physical Properties
| Property | Value | Unit | Temperature | Test Standard |
|---|---|---|---|---|
| Density | 8.00 | g/cm3 | 20°C | ASTM B311 |
| Melting Point | 1400-1450 | °C | - | DSC Analysis |
| Thermal Conductivity | 16.2 | W/m·K | 100°C | ASTM E1461 |
| Specific Heat | 500 | J/kg·K | 0-100°C | ASTM C351 |
| Linear Expansion | 17.2 | μm/m·K | 0-100°C | ASTM E228 |
| Electrical Resistivity | 720 | n|°¤m | 20°C | ASTM B193 |
| Magnetic Permeability | 1.02 | μ/μ₀ | Room Temp | ASTM A342 |
| Curie Temperature | None | - | - | Non-magnetic |
📏 Product Specifications
| Specification | Available Range | Standard Length | Custom Available | Tolerance |
|---|---|---|---|---|
| Width | 10mm - 300mm | Various | Yes | ±0.5mm |
| Thickness | 3mm - 50mm | Various | Yes | ±0.3mm |
| Length | 1m - 6m | 3m, 6m | Yes | +50mm/-0mm |
| Surface Finish | Hot Rolled, Cold Drawn, Polished | Hot Rolled | Yes | Ra ≤ 1.6μm |
| Edge Condition | Mill Edge, Slit Edge | Mill Edge | Both | ASTM standard |
| Straightness | ±2mm/m | Standard | Precision | ASTM A276 |
| Standards Compliance | ASTM A276, A479, A582 | A276 | Multiple | Full compliance |
| Condition | Annealed, Cold Worked | Annealed | Yes | ASTM A276 |
| Test Certificate | Mill TC, EN 10204 3.1 | Mill TC | Yes | Standard |
| Packaging | Bundles, Wooden Crates | Bundles | Custom | Export standard |
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Our Advantages in Processing 304ステンレス鋼フラットバー
Superior Corrosion Resistance
304 grade stainless steel manufacturing process incorporates precise chromium and nickel content control, resulting in exceptional resistance to rust and corrosion across diverse environmental conditions, making it ideal for long-term industrial applications.
Precision Flat Rolling Process
Advanced flat rolling technology ensures consistent thickness and surface finish across the entire length of the bar, maintaining tight dimensional tolerances and superior flatness for optimal machining and fabrication performance.
Enhanced Material Strength
Specialized heat treatment and cold working processes during manufacturing create an optimal microstructure that delivers high tensile strength and excellent ductility, while maintaining the material's inherent weldability and machinability.
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