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ASTM A641 Galvanized Steel Wire
Our ASTM A641 Galvanized Steel Wire, manufactured according to ASTM A641/A641M, provides superior corrosion resistance, controlled zinc coating weight, and consistent mechanical performance for industrial applications. Produced from high-quality low-carbon and high-carbon steel rod, the wire is precision-drawn and coated through advanced hot-dip galvanizing lines to deliver Class 1, Class 2, and Class 3 zinc coatings. With tensile strengths ranging from 350 to 1200 MPa, high adhesion coating, and tight diameter tolerances, our ASTM A641 wire is widely used in fencing, construction, cable armoring, packaging, agriculture, and manufacturing. As a professional factory exporting to 60+ countries, we offer stable supply, traceable quality, and customizable specifications for global B2B buyers.
Keywords: ASTM A641 Wire, ASTM A641 Zinc-Coated Steel Wire, Hot-Dip Galvanized Steel Wire, Class 1 / Class 2 / Class 3 Coating, Commercial Quality Wire, High Tensile GI Wire

Products Description
Product Name: ASTM A641 Zinc-Coated (Galvanized) Steel Wire
Standards: ASTM A641/A641M
Coating Classes: Class 1, Class 2, Class 3 (Light → Heavy Coating)
Wire Types: Soft, Hard-Drawn, High Tensile
Coating Method: Hot-Dip Galvanizing
Wire Diameter Range: 0.20 mm – 6.00 mm
Tensile Strength: 350–1200 MPa
Applications: Fencing, binding wire, mesh weaving, cable armoring, bale wire, industrial manufacturing
ASTM A641 Standard Diameter Table Standard Sizes & Dimensions (Metric + Imperial)
| Diameter (mm) | Diameter (inch) | Tolerance (mm) | Tensile Strength (MPa) | Coating Class | Zinc Coating (g/m²) |
|---|---|---|---|---|---|
| 0.20 | 0.008" | ±0.005 | 350–1200 | Class 1–3 | 10–45 |
| 0.30 | 0.012" | ±0.005 | 350–1200 | Class 1–3 | 10–55 |
| 0.50 | 0.020" | ±0.008 | 350–1200 | Class 1–3 | 15–80 |
| 0.80 | 0.032" | ±0.01 | 350–1200 | Class 1–3 | 20–100 |
| 1.00 | 0.039" | ±0.01 | 350–1200 | Class 1–3 | 25–120 |
| 1.60 | 0.063" | ±0.02 | 350–1200 | Class 1–3 | 40–160 |
| 2.00 | 0.079" | ±0.02 | 350–1200 | Class 1–3 | 50–200 |
| 2.80 | 0.110" | ±0.03 | 350–1200 | Class 1–3 | 60–250 |
| 3.50 | 0.138" | ±0.03 | 350–1200 | Class 1–3 | 80–300 |
| 4.00 | 0.157" | ±0.05 | 350–1200 | Class 1–3 | 100–350 |
| 5.00 | 0.197" | ±0.05 | 350–1200 | Class 1–3 | 120–350 |
| 6.00 | 0.236" | ±0.05 | 350–1200 | Class 1–3 | 150–350 |
Chemical Composition (Typical for ASTM A641 Steel Rod)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.04–0.25 |
| Manganese (Mn) | 0.30–0.90 |
| Silicon (Si) | ≤0.30 |
| Phosphorus (P) | ≤0.040 |
| Sulfur (S) | ≤0.040 |
Mechanical Properties (ASTM A641 Requirements)
| Property | Soft (Annealed) | Hard-Drawn | High Tensile |
|---|---|---|---|
| Tensile Strength | 350–550 MPa | 600–900 MPa | 900–1200 MPa |
| Elongation | ≥15% | ≥3% | ≥2% |
| Torsion Test | ≥20 turns | ≥15 turns | ≥10 turns |
| Coating Adhesion | No flaking after bend test | No flaking | No flaking |
| Zinc Coating | Class 1/2/3 | Class 1/2/3 | Class 1/2/3 |
Product Features
Manufactured strictly according to ASTM A641/A641M
Class 1–3 coating for different corrosion resistance levels
Excellent adhesion between zinc coating and steel core
Smooth surface finish after precision drawing
Optimized for mesh welding, fencing, cable armoring, and industrial forming
Available in soft, medium, and high-tensile conditions
Supports OEM coil weight, packaging, and private labeling
SEO Keywords: ASTM A641 coating, GI wire features, zinc-coated wire advantages.
Applications
Fencing Manufacturing: chain-link fence, welded mesh, barbed wire
Construction: binding wire, rebar tie wire, straightened & cut wire
Agriculture: vine trellis, greenhouse support wire, bale ties
Industrial: hanger wire, mattress springs, forming wire, mesh weaving
Cable Industry: armoring wire, messenger wire
Packaging: baling wire, stitching wire


Advantages Over Other Materials
Cost-Effective
More affordable than stainless steel but offers good durability.
Low Maintenance
Resists weathering without frequent treatments.
Flexibility
Easily cut, shaped, or welded for custom projects.
Inspection & Quality Assurance
Raw Material Control: Chemical analysis of steel rod
Wire Drawing: Laser diameter measurement & surface inspection
Galvanizing: Coating weight (g/m²) checks, adhesion tests
Mechanical Testing: Tensile, elongation, torsion, bending
Surface Quality: Smoothness, rust-free inspection
Final QC: Batch traceability, packaging inspection
Certification: MTC, CO, FORM E, SGS/BV available
Looking for a reliable ASTM A641 galvanized steel wire manufacturer?
Contact us for technical data sheets, samples, and latest pricing.
Email / WhatsApp / Phone support available 24/7.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734

FAQ
1. What coating class should I choose for my application?
Class 1: Indoor or low-corrosion environments
Class 2: Normal outdoor use
Class 3: Coastal, high-humidity, or long-term outdoor applications
2. Is ASTM A641 wire always hot-dip galvanized?
Yes. ASTM A641 specifies hot-dip zinc coating, not electro-galvanizing.
3. Can you supply high-tensile ASTM A641 wire?
Yes, tensile strengths up to 1200 MPa are available for industrial and fencing applications.
4. What is your coil weight range?
We offer 20–800 kg coils depending on customer's equipment and loading requirements.
5. Do you provide third-party inspection?
Yes. SGS, BV, TUV inspections are available upon request.
6. What are the packaging options?
Plastic film + woven bag
Steel pallet / fumigation-free pallet
Spools and drums available
7. Can you customize zinc coating according to ASTM table?
Yes, including Class 1 / Class 2 / Class 3 with precise coating weight control.
8. What's your monthly production capacity?
5,000–10,000 tons depending on wire size.
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