Galvanized drawn fine wire

Delivering the perfect balance of high strength and corrosion resistance for precision industries

Galvanized cold-drawn fine wire is a high-performance metal wire produced through specialized processing techniques. It finds extensive application in high-end manufacturing sectors such as electronic components, medical devices, precision springs, woven mesh, filtration equipment, and micro-fasteners. Our products utilize premium low-carbon or medium-to-high-carbon steel wire rods as raw material. These undergo either hot-dip galvanizing or electrogalvanizing before being subjected to multi-pass precision cold drawing. This process achieves the target wire diameter while imparting significant work-hardening effects. This unique "galvanizing-before-drawing" process ensures the wire maintains a uniform, dense zinc coating for protection while achieving mechanical properties far superior to standard galvanized wire. This makes it an ideal upgrade choice to replace ordinary steel wire in precision industrial applications.

Detailed Technical Specifications Table

Parameter Category	Detailed Item	Technical Specifications and Scope	Test Standard/Description
Basic Specifications	Wire Diameter	0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.18mm, 0.20mm, 0.22mm, 0.25mm, 0.28mm, 0.30mm, 0.35mm, 0.40mm	Custom sizes available upon request
	Diameter Tolerance	Precision Grade: ±0.005mm; Standard Grade: ±0.01mm	Online Laser Diameter Measurement
	Material Grade	SWRM 6-12K, SWRH 27A-42A, 65Mn, etc.	Material certification provided
Mechanical Properties	Tensile Strength	900MPa, 950MPa, 1000MPa, 1050MPa, 1100MPa, 1120MPa Grade	ASTM A370 / GB/T 228.1
	Elongation at break	≥ 2%-5% (depending on strength grade)	Retains basic plasticity at high strength
	Number of twists	≥ 15–25 times (using 0.20 mm as an example)	Verify internal structural uniformity
	Winding Test	Wound to 4 times its own diameter, no zinc layer flaking	GB/T 2976
Coating Characteristics	Coating Type	Hot-dip galvanizing or Electrogalvanizing	Optional
	Galvanized layer thickness	3–8 μm (depending on process and diameter)	ISO 1463
	Coating Adhesion	Significantly enhanced coating bond strength after re-drawing, with no peeling	Verified through bending/wrapping tests
	Salt Spray Test	≥ 48-72 hours (until white rust)	ASTM B117
Surface Condition	Standard Surface	Bright Galvanized: Silver-white metallic sheen	Suitable for most applications
	Optional Surface	Finishes Polished: Uncoated, natural white; Phosphated: Grayish black, enhanced lubricity
	Surface roughness	Ra ≤ 0.4μm (Precision grade)	Smooth and uniform
Packaging Format	Plastic Spool	0.5kg, 1kg, 2kg, 5kg, 7kg, 10kg/spool	Suitable for precision winding machines
	Coil	5kg, 10kg, 15kg, 20kg/roll	Suitable for manual or semi-automatic operation
	Inner Packaging	Rust-proof paper + Sealed plastic bag	Moisture-proof and oxidation-proof
	Outer Packaging	High-strength cardboard boxes / Export-grade wooden crates	Suitable for international shipping

Professional Application Scenarios

And Selection Guide

High-Precision Filter Mesh and Screen Mesh

Used for manufacturing microporous filter screens, oil filter screens, and laboratory sieves for the chemical, food, and pharmaceutical industries. Bright-finished galvanized drawn wire with a diameter of 0.11-0.20mm is recommended. Its smooth surface and uniform strength ensure a wire breakage rate below 0.5% during weaving. The galvanized coating withstands repeated cleaning and disinfection, while the mesh surface exhibits excellent flatness.

Micro Precision Springs and Elastic Components

For electronic device contacts, micro switches, and medical device springs. Recommended wire diameter: 0.15-0.30mm; strength: 1000-1120MPa. This wire undergoes a specialized annealing process to maintain consistent elasticity after coiling, ensuring no relaxation during prolonged use. Practical application tests demonstrate that miniature springs manufactured with our wire exhibit a fatigue life exceeding standard spring wire by over 25%.

Industrial Brush Wire and Brush Rollers

For circuit board cleaning brushes, glass cleaning brushes, and pipe interior rust removal brushes. Phosphated steel wire with a diameter of 0.20-0.40mm is recommended. The phosphating film adsorbs lubricants, reducing wear on workpieces caused by the bristles while providing basic rust protection. The wire's excellent straightness ensures uniform bristle alignment and a flat brush surface.

Microelectronic leads and interconnect components

For semiconductor packaging leads, sensor connection wires, and micro resistor/capacitor pins. Ultra-precision bright zinc-plated wire with a diameter of 0.11-0.18mm is recommended. A tolerance of ±0.005mm ensures precise positioning in automated bonding equipment, while the smooth surface facilitates subsequent soldering or tin plating.

Craft Weaving and Micro-Components

Ideal for high-fidelity metal floral arrangements, miniature model skeletons, and jewelry components. We recommend using bright or colored galvanized wire with a diameter of 0.18-0.30mm (custom dyeing available). Its exceptional flexibility and lustrous surface enable crafters to effortlessly create intricate pieces, with finished works maintaining rust resistance even during prolonged storage.

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