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Help CenterSteel Wire & Galvanized Steel Wire，Q195 / SAE1008、45#, 55#, 60#、65Mn, 72A, 82B、60Si2MnA, 55SiCrA
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1. Product Overview
Steel wires are thin-diameter metal wires manufactured from hot rolled carbon steel wire rods via multi-pass cold drawing, annealing, surface treatment and heat treatment. They are divided into three main series: low-carbon soft wire, medium-carbon rope wire and high-carbon spring wire, available in bright finish, hot-dip galvanized and electro-galvanized surface. Featuring ultra-precise dimensional tolerance, wide tensile strength range and controllable flexibility, steel wires integrate binding, load-bearing, elastic and anti-corrosion performance. Widely used in construction binding, steel wire rope manufacturing, mechanical springs, agricultural fencing, rock net for slope protection, power guy wires and metal woven mesh.
Main Implementation Standards
Chinese National StandardsGB/T 343 Low Carbon Steel WiresGB/T 4357 Carbon Spring Steel WiresGB/T 15393 Galvanized Steel WiresYB/T 5343 Steel Wires for Wire Ropes
International Export StandardsASTM A411 Galvanized Steel Wires, ASTM A228 Spring Steel WiresEN 10244 Galvanized Steel Wires, EN 10270 Mechanical Spring WiresJIS G3532 Galvanized Iron Wires, JIS G3522 Carbon Spring Wires
Supporting Test StandardsTensile strength test, 180° reverse bending test, torsion test, zinc coating weight test, neutral salt spray corrosion test, dimensional tolerance inspection
2. Main Steel Grades, Types & Applicable Working Conditions
2.1 Low Carbon Steel Wires (Q195 / SAE1008, Annealed Soft State)
Subtypes: Black annealed binding wire, electro-galvanized soft wire
Mechanical performance: Tensile strength 350–550MPa, excellent ductility, no fracture after repeated bending
Application: Construction rebar binding, carton packing, simple hand-woven mesh, clothes hangers, gardening binding, indoor small component fixing
Surface: Black annealed raw surface, bright electro-galvanized coating
2. Medium-carbon Galvanized Wire Rope Wires (45#, 55#, 60#)
Mechanical performance: Tensile strength 800–1300MPa, high torsion resistance and fatigue resistance
Application: Core wires of steel wire ropes, bridge suspension cables, mine hoisting ropes, overhead power guy wires, river rock cages, slope protection mesh, high-strength greenhouse tension wires
Surface: Hot-dip galvanized with thick, well-adhered zinc coating for long-term outdoor rust prevention
3. High Carbon Carbon Spring Steel Wires (65Mn, 72A, 82B, Grade DH/SH/DB)
Mechanical performance: Tensile strength 1600–2900MPa, high elastic limit, good anti-fatigue performance, resistant to permanent deformation
Application: Mechanical compression & tension springs, automobile shock absorber springs, valve spring plates, fishing wires, precision elastic hardware
Delivery state: Bright cold drawn, oil tempered, galvanized anti-corrosion upon request
4. Alloy Spring Steel Wires (60Si2MnA, 55SiCrA)
Mechanical performance: High temperature resistance, low stress relaxation, stable elasticity under high temperature
Application: Automobile suspension springs, industrial high-temperature equipment springs, elastic components for construction machinery
3. Specification Parameters
Diameter Range: 0.15mm ~ 12.0mm
Fine soft wire: 0.15–2.0mm (packing & weaving)
Medium diameter rope wire: 2.0–6.0mm (wire ropes & rock cages)
Thick spring wire: 3.0–12.0mm (heavy-duty springs)
Dimensional Tolerance: ±0.02mm ~ ±0.05mm, formed by high-precision drawing dies
Supply Forms
Large coils: 500–1000kg per coil for continuous industrial processing
Small coils / spools: 10–50kg per coil for manual & small equipment processing
Cut straight wires: Custom fixed lengths upon request
Galvanized Coating Types
Electro-galvanized: Zinc layer 3–8μm, salt spray resistance ≥96h, delicate bright surface
Hot-dip galvanized: Zinc layer 8–30μm, salt spray resistance ≥240h, heavy anti-corrosion for outdoor use
Simplified Theoretical Weight Formula: Weight per meter (kg) = 0.00617 × Diameter²
4. Complete Production Process
4.1 Low-carbon Soft Wire Process
Hot rolled wire rod → Pickling, phosphating & saponification → Multi-pass cold drawing → Low-temperature annealing for softening → Coiling / galvanizing → Inspection & packing
4.2 Medium-carbon Galvanized Rope Wire Process
High carbon wire rod → Pickling & semi-finished drawing → Lead bath patenting to upgrade strength → Hot-dip galvanizing → Passivation protection → Coiling & inspection
4.3 High Carbon Spring Wire Process
Premium high carbon wire rod → Multi-pass precision cold drawing → Oil tempering heat treatment (optional) → Surface polishing / galvanizing → Coil slitting, full dimensional & mechanical inspection
5. Mandatory Factory Inspection Items
Spectral composition analysis: Strict control of C, Mn, S, P impurities to match strength grades
Full mechanical testing: Tensile strength, reverse bending cycles, torsion cycles (mandatory for rope wires)
Special galvanized coating test: Zinc coating weight, coating adhesion, neutral salt spray resistance duration
Random dimensional inspection: Wire diameter tolerance, roundness, surface roughness
Visual surface inspection: Free of cracks, burrs, peeling, missing plating and rust spots
6. Main Application Fields
Construction Engineering: Rebar binding wire, scaffold fixing, welded rebar mesh, temporary construction binding
Wire Rope Industry: Single wires for all types of steel wire ropes, lifting slings for ports & ships
Agriculture & Horticulture: Greenhouse film tension wires, livestock fencing mesh, fruit tree binding, rock protection cages
Power & Telecommunication: Overhead power guy wires, optical cable support wires, tower reinforcing cables
Machinery & Hardware: Various mechanical springs, automobile elastic parts, woven filter mesh, stamped hardware
Water Conservancy & Municipal Works: River slope rock cages, slope protection, river bank reinforcement, sewage filter mesh
7. Core Product Advantages
Full specification coverage: Complete wire diameter series from ultra-fine 0.15mm to thick 12mm, optional low/medium/high tensile grades
Complete anti-corrosion surface solutions: Black annealed wire, electro-galvanized, hot-dip galvanized adapt to dry indoor, humid outdoor and coastal salt fog environments
Stable mechanical performance: Precision drawing + exclusive heat treatment, qualified bending, torsion and fatigue resistance
Wide processing compatibility: Soft wire easy to bend & weave; high carbon wire maintains lasting elasticity; rope wire anti-torsion without strand breakage
Flexible delivery packaging: Large coils, small coils and cut straight wires, suitable for automatic production lines and manual operation
Graded cost options: Low carbon wire with optimal cost performance; high carbon spring wire meets high-end demand of precision elastic components
8. Delivery, Packing & Logistics
Delivery States
Low carbon annealed wire: Black uncoated surface; bright electro-galvanized finish
Rope wire: Matte thick hot-dip galvanized layer
Spring wire: Raw bright cold drawn surface, oil-tempered gray-blue surface, galvanized anti-corrosion surface
Coil Marking: Label attached to each coil, marked with material grade, wire diameter, tensile grade, coil weight, execution standard and heat batch number
Packing: Large coils cross-bound with steel strips and wrapped with waterproof film; small coils covered with plastic film; export orders reinforced with wooden pallets and inner moisture-proof paper
Delivery Lead TimeRegular in-stock low-carbon galvanized wire & common rope wire: Delivery within 5–7 days; customized high carbon spring wire, alloy spring wire and special zinc coating wires: 7–10 days, container shipment available from Tianjin Port
Attached Shipping Documents: Original Mill Test Certificate, tensile / bending / torsion mechanical test report, galvanized salt spray test record, factory certificate
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