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High carbon steel wire for flexible air duct
wire
Asia Metal manufactures precision-engineered high carbon steel wire specifically designed for reinforcing flexible air ducts in HVAC, industrial ventilation, and exhaust systems. Our wire provides superior tensile strength, fatigue resistance, and consistent springback — ensuring ducts maintain shape under pressure, vibration, and thermal cycling. Ideal for spiral-wound duct cores, helical support rings, and collapsible duct frameworks. We offer full customization in diameter, tensile strength, coating, and coil packaging to integrate seamlessly with your duct manufacturing line.
| Parameter | Standard Range | Customizable Options |
|---|---|---|
| Material Grade | SAE 1065, 1070, 1075, 1080 (C70, C75, C80 per EN) | Special alloys: SAE 1095, EN8, or customer-specified chemistry |
| Wire Diameter | 0.8mm – 3.5mm (AWG 9 to AWG 22) | Yes — Tolerance ±0.02mm; micro-diameters down to 0.5mm |
| Tensile Strength | 1200–1800 MPa (as drawn, untempered) | Yes — Adjustable via drawing & tempering process |
| Coating / Finish | Bare, Zinc-Plated (Electro or Hot-Dip), Epoxy Coated | Yes — PVC coated, oiled, waxed, or color-coded |
| Spool Configuration | 25kg–200kg per coil; DIN 46395 or ISO 6892-1 spools | Yes — Custom flange size, arbor hole, tension winding |
| Surface Quality | Smooth, defect-free, scale-free (Pickled & Phosphate coated) | Yes — Precision ground or polished surface available |
| Delivery Time | 7–14 Days (Standard Grades & Sizes) | Custom orders: 10–20 days; Rush 5-day production available |
| Certifications | ISO 9001, SGS, RoHS, MTC (EN 10204 3.1), ASTM A227/A228 | Additional: UL Recognized, REACH, Conflict Minerals Report |
| Grade | Carbon % | Tensile Strength (MPa) | Elongation (%) | Application Suitability |
|---|---|---|---|---|
| SAE 1065 | 0.60–0.70% | 1200–1500 | ≥5% | Light to medium-duty ducts, cost-effective |
| SAE 1075 | 0.70–0.80% | 1500–1700 | ≥4% | Heavy-duty industrial ducts, high fatigue resistance |
| SAE 1080 | 0.75–0.85% | 1600–1800 | ≥3% | High-pressure systems, maximum shape retention |
| Zinc-Coated 1070 | 0.65–0.75% | 1400–1600 | ≥4% | Humid or corrosive environments, outdoor HVAC |
A: High carbon steel offers the optimal balance of springback, stiffness, and cost for duct reinforcement. It holds helical shape under repeated flexing better than low carbon steel, while being significantly more economical than stainless steel — especially for large-volume duct manufacturing.
A: Yes. We offer value-added services including pre-coiling to specific diameters, pre-bending, and custom nesting on pallets or feed racks compatible with your duct production machinery — reducing your labor and setup time.
A: For humid or corrosive conditions, we recommend electro-galvanized (8–12μm) or hot-dip galvanized (≥50μm) coatings. For extreme environments, epoxy-coated or PVC-sheathed wire provides maximum protection. Salt spray test reports available.
A: Absolutely. Every coil is marked with heat number and batch code. We supply Mill Test Certificates (EN 10204 3.1) including chemical composition, tensile test, coating thickness, and coil weight. SGS or third-party inspection available upon request.
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