Production Standard | Chemical Composition | Physical & Mechanical Properties
Steel channel (U-profile) — is typically made of structural steels and used in load-bearing metal structures.
Production Standard:
- GOST 8240-97
Chemical Composition (%):
- St3, St20, St37
- S235, S275 (according to EN standard)
Steel channel is typically made of low-carbon steel.
Typical chemical composition (%):
| Element | Quantity (%) | Effect |
|---|---|---|
| Carbon (C) | 0.14 - 0.22 | Provides strength, lower amount makes steel elastic |
| Manganese (Mn) | 0.40 - 0.65 | Increases strength and impact resistance |
| Silicon (Si) | ≤ 0.30 | Deoxidizer, increases strength |
| Phosphorus (P) | ≤ 0.045 | Excess may cause brittleness |
| Sulfur (S) | ≤ 0.045 | Excess may cause cold brittleness |
| Iron (Fe) | Remainder | Base metal |
Mechanical Properties:
| Property | Value |
|---|---|
| Yield strength | ≥ 235 MPa |
| Tensile strength | 370-510 MPa |
| Elongation | ≥ 20-25 % |
| Impact strength | Good |
| Hardness | ~ 120-160 HB |
| Weldability | High |
Physical Properties:
| Property | Value |
|---|---|
| Density | ≈ 7850 kg/m3 |
| Melting point | ~ 1450 °C |
| Thermal conductivity | 45-60 W/m·K |
| Electrical conductivity | Moderate |
| Magnetic property | Magnetic |
Application Areas | Advantages | Limitations | Terms of Sale
Application Areas:
-
Construction Sector
- Metal frameworks and support systems
- Columns, frames, trusses
- Staircase structures
- Roofing skeletal structures
-
Infrastructure
- Bridge elements
- Supports for power poles
- Metal frameworks for billboards
- Cable trays, pipe supports
- Scaffolding, assembly structures
-
Industry and Manufacturing
- Machine and mechanism frameworks
- Conveyor and equipment supports
- Metal platforms
-
Household and Light Structures
- Door and gate frames
- Fences and railings
- Shelving and storage systems
Advantages:
-
High Load-Bearing Capacity
- U-shape is resistant to bending
-
Good Weldability
- Low-carbon steels are suitable for welding
-
Ease of Assembly
- Bolted and welded joints are easy
-
Cost-Effectiveness
- Often cheaper compared to I-beam
-
Standard Dimensions
- Simplifies engineering design and procurement
-
Versatile Use
- As both load-bearing and auxiliary element
Limitations:
-
Corrosion Susceptibility
- Can rust in open environments
- Painting, galvanization, or other coating required
-
Aesthetic Limitations
- Open profile may not be suitable for some architectural solutions
-
Bending and Torsion
- Lateral torsion risk may occur when working alone (requires bracing)
-
May Require Alternatives for Heavy Structures
- I-beam or box profile is more appropriate for large spans
Quick Comparison (When to choose channel?):
- Choose box profile: if torsion and aesthetic requirements are high, moderate loads, simple assembly, economic solution is needed
- Choose I-beam: for large spans and heavy loads
- Choose box profile: if torsion and aesthetic requirements are high
Terms of Sale:
- Channel price is determined by H size and manufacturer. Prices are quoted per meter.
- Channel demand is passed as quantity (pieces), standard length is 6m or 12m.
- Relevant documents are provided to the buyer upon request (contract, acceptance act, invoice, waybill, weight slip, cash receipt, laboratory test analysis, certificate, etc.).
