Q235 Cable Armoring Wire
Durable carbon steel wire designed for protective armoring of cables and power transmission lines with excellent impact resistance and fatigue strength
High-performance cable armoring wire manufactured to GB/T 700 Chinese national standard for Q235 grade structural steel. This versatile material provides superior protective characteristics for electrical cables, telecommunications systems, and power transmission infrastructure, combining reliable mechanical strength with cost-effectiveness for large-scale industrial applications.
Quick Specifications
- Yield Strength (0.2% offset)
- 235 MPa (34 ksi)
- Tensile Strength
- 370-500 MPa (54-72.5 ksi)
- Elongation (in 50mm)
- Minimum 24%
- Carbon Content
- 0.14-0.22%
- Manganese Content
- 0.30-0.65%
- Silicon Content
- 0.10-0.35%
Standards & Certifications
Product Description
Q235 cable armoring wire represents the industry-standard solution for protective sheathing and armoring of underground cables, submarine cables, and above-ground power transmission systems. Manufactured according to GB/T 700 specifications, this carbon steel wire grade achieves yield strength of 235 MPa with controlled tensile properties ensuring consistent mechanical performance across diverse applications. The material undergoes careful heat treatment and drawing processes to optimize strength, ductility, and fatigue resistance, creating armoring wire that reliably protects sensitive cable cores while withstanding mechanical stresses from installation, routing, and operational environments.
The protective function of Q235 armoring wire extends beyond simple mechanical protection to encompass electromagnetic shielding, environmental isolation, and mechanical impact resistance. The material's controlled hardness and moderate tensile strength provide optimal balance between protective rigidity and installation flexibility, enabling curved routing and conduit installation without cable damage. Standardized manufacturing ensures consistent wire diameter, surface finish, and mechanical properties across production runs, facilitating reliable automated weaving and protective sheathing applications in cable manufacturing facilities.
Cable armoring applications benefit from Q235's proven reliability in protecting critical infrastructure including power distribution networks, telecommunications systems, and industrial control cables. The material's resistance to mechanical abrasion, impact damage, and environmental factors extends cable service life dramatically, reducing failure rates and maintenance requirements. Proper specification of wire gauge and armoring configuration ensures adequate protection matching cable voltage ratings, installation environments, and anticipated mechanical stresses throughout operational service.
Manufacturing consistency and cost-effectiveness make Q235 the preferred choice for high-volume cable production and protection applications. The material's compatibility with standard cable manufacturing equipment enables efficient production with minimal setup adjustments. Quality control protocols verify mechanical properties, dimensional accuracy, and surface characteristics, ensuring every armoring wire shipment meets demanding specifications for critical infrastructure protection applications.
Specifications
| Yield Strength (0.2% offset) | 235 MPa (34 ksi) |
| Tensile Strength | 370-500 MPa (54-72.5 ksi) |
| Elongation (in 50mm) | Minimum 24% |
| Carbon Content | 0.14-0.22% |
| Manganese Content | 0.30-0.65% |
| Silicon Content | 0.10-0.35% |
| Phosphorus Content (max) | 0.045% |
| Sulfur Content (max) | 0.045% |
| Density | 7.85 g/cm³ |
| Hardness (Drawn Condition) | 80-100 HV |
| Modulus of Elasticity | 210 GPa (30,500 ksi) |
| Surface Finish | Bright or Annealed (galvanized option available) |
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.14-0.22% |
| Silicon (Si) | 0.10-0.35% |
| Manganese (Mn) | 0.30-0.65% |
| Phosphorus (P) | Maximum 0.045% |
| Sulfur (S) | Maximum 0.045% |
| Iron (Fe) | Remainder |
Mechanical Properties
| Property | Value |
|---|---|
| Shear Modulus | 80 GPa (11,600 ksi) |
| Poisson's Ratio | 0.27-0.30 |
| Density | 7.85 g/cm³ (0.284 lb/in³) |
| Thermal Conductivity | 50 W/m·K |
| Coefficient of Thermal Expansion | 11 x 10⁻⁶ /°C |
| Impact Strength (Charpy V) | Minimum 47 J at 20°C |
| Fatigue Strength Limit (10⁷ cycles) | 150-180 MPa |
Key Features & Advantages
Applications
Underground Power Distribution Cables
Utilized as protective armoring for medium and high-voltage underground cables distributing electrical power through urban and rural infrastructure. The armoring protects cable insulation from mechanical damage during installation and from soil excavation hazards, extending cable service life while ensuring safe power distribution.
Submarine and Underwater Cable Systems
Applied in protective layers for undersea telecommunications and power cables traversing ocean environments. The material's mechanical strength resists trawl net damage and anchor-related hazards while the surface properties limit marine organism attachment, maintaining cable integrity in demanding ocean conditions.
Telecommunications Network Infrastructure
Employed in protective armoring of fiber optic and metallic telephone cables routed through outdoor environments and underground conduits. The protective layer safeguards sensitive communication channels from mechanical disruption while providing electromagnetic shielding in some configurations.
Industrial Control and Signal Cables
Utilized in armoring of sensor, instrumentation, and control system cables in manufacturing facilities, process plants, and heavy equipment. The protective sheathing shields sensitive signals from electromagnetic interference while protecting cables from mechanical damage in high-vibration and high-heat industrial environments.
Outdoor Electrical Transmission Lines
Applied in protective covering of exposed electrical conductors and bundled cable systems in rural electrification and power transmission applications. The armoring provides mechanical protection from wind-induced movement, ice accumulation, and environmental factors while maintaining electrical conductivity and thermal performance.
Mining and Heavy Equipment Cabling
Employed in protective armoring of power and control cables for mining operations, drilling equipment, and heavy construction machinery. The durable protection resists abrasion from rock contact, mechanical handling, and harsh mining environments while maintaining reliable power transmission to essential equipment.
Frequently Asked Questions
What is the typical wire diameter range for cable armoring applications?
Can Q235 armoring wire be galvanized for improved corrosion resistance?
How is Q235 armoring wire applied during cable manufacturing?
What is the approximate weight contribution of armoring wire to finished cable?
How does Q235 armoring wire protect cables from external damage?
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