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Technical Specifications
Product Overview
Hot Rolled Steel Bar Channel is manufactured from high-quality carbon steel through hot rolling process, providing excellent structural strength and versatility. These C-shaped structural sections offer optimal strength-to-weight ratio and are widely used in construction and industrial applications.
Key Features:
- High structural strength and load-bearing capacity
- Excellent weldability and machinability
- Cost-effective structural solution
- Good ductility and formability
- Standardized dimensions for easy design integration
Manufacturing Process: Hot rolled from quality carbon steel billets using precision rolling mills, ensuring consistent dimensional accuracy and mechanical properties throughout the length.
Applications: Building frames, industrial structures, machinery frames, support brackets, automotive chassis components, shipbuilding, bridge construction, and general structural engineering applications.
🧪 Chemical Composition
| Element | Min % | Max % | Typical % | ASTM A36 Requirement |
|---|---|---|---|---|
| Carbon (C) | - | 0.26 | 0.18 | ≤ 0.26 |
| Manganese (Mn) | 0.80 | 1.20 | 0.95 | 0.80-1.20 |
| Silicon (Si) | 0.15 | 0.40 | 0.25 | 0.15-0.40 |
| Phosphorus (P) | - | 0.040 | 0.025 | ≤ 0.040 |
| Sulfur (S) | - | 0.050 | 0.030 | ≤ 0.050 |
| Copper (Cu) | - | 0.20 | 0.12 | ≤ 0.20 |
| Chromium (Cr) | - | 0.30 | 0.15 | ≤ 0.30 |
| Nickel (Ni) | - | 0.30 | 0.15 | ≤ 0.30 |
| Iron (Fe) | Balance | Balance | 98.2 | Balance |
⚙️ Mechanical Properties
| Property | ASTM Requirement | Typical Value | Test Method | Temperature |
|---|---|---|---|---|
| Tensile Strength | 400-550 MPa | 485 MPa | ASTM A370 | Room Temp |
| Yield Strength | 250 MPa min | 275 MPa | ASTM A370 | Room Temp |
| Elongation | 20% min | 26% | ASTM A370 | Room Temp |
| Hardness (Brinell) | - | 140 HB | ASTM E10 | Room Temp |
| Hardness (Rockwell B) | - | 75 HRB | ASTM E18 | Room Temp |
| Modulus of Elasticity | - | 200 GPa | ASTM E111 | Room Temp |
| Impact Energy (Charpy V) | - | 80+ J | ASTM E23 | Room Temp |
🔬 Physical Properties
| Property | Value | Unit | Temperature | Test Standard |
|---|---|---|---|---|
| Density | 7.85 | g/cm3 | 20°C | ASTM B311 |
| Melting Point | 1425-1540 | °C | - | DSC Analysis |
| Thermal Conductivity | 50.2 | W/m·K | 100°C | ASTM E1461 |
| Specific Heat | 460 | J/kg·K | 0-100°C | ASTM C351 |
| Linear Expansion | 11.7 | μm/m·K | 0-100°C | ASTM E228 |
| Electrical Resistivity | 170 | n|°¤m | 20°C | ASTM B193 |
| Magnetic Permeability | High | μ/μ₀ | Room Temp | ASTM A342 |
| Curie Temperature | 770 | °C | - | Ferromagnetic |
📏 Product Specifications
| Specification | Available Range | Standard Length | Custom Available | Tolerance |
|---|---|---|---|---|
| Channel Height (H) | 75mm - 400mm | Various | Yes | ±2.0mm |
| Flange Width (B) | 40mm - 110mm | Various | Yes | ±1.5mm |
| Web Thickness (t) | 5mm - 18mm | Various | Yes | ±0.5mm |
| Flange Thickness (T) | 7mm - 20mm | Various | Yes | ±0.5mm |
| Length | 6m - 12m | 12m | Yes | +50mm/-0mm |
| Surface Finish | Hot Rolled, Pickled | Hot Rolled | Yes | Mill Scale |
| End Condition | Square Cut, Beveled | Square Cut | Yes | ±1° |
| Standards Compliance | ASTM A36, A992, JIS G3101 | A36 | Multiple | Full compliance |
| Test Certificate | Mill TC, EN 10204 3.1 | Mill TC | Yes | Standard |
| Packaging | Bundles, Loose, Containers | Bundles | Custom | Export standard |
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Our Advantages in Processing เหล็กแท่งรูปช่องแบบรีดร้อน
Precise Hot Rolling Process
The controlled high-temperature rolling process ensures uniform material properties throughout the channel, resulting in consistent strength and dimensional accuracy. Steel is heated above 1700°F and precisely shaped, creating optimal grain structure and mechanical properties.
Enhanced Structural Strength
Hot rolling refines the steel's grain structure during formation, eliminating internal stresses and producing channels with superior load-bearing capacity. This process creates a more homogeneous material structure compared to cold-formed alternatives.
Efficient Shape Formation
The hot rolling manufacturing process allows for efficient production of U-shaped channels with minimal material waste. The heated steel's increased plasticity enables smooth forming of complex profiles while maintaining structural integrity and surface quality.
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