Aluminium Fine Wire
Precision Drawn Wire for Braided EMI Shielding
Overview
Aluminium Fine Wire is precision cold-drawn wire manufactured in diameters from 0.10 mm upward with tight diameter tolerance, produced in EC Grade 1350 for maximum conductivity and Al-Mg alloy 5154 where strength is required. Its primary and fastest-growing application is braided EMI/RFI shielding: fine wires are woven into tubular braids around cable cores, wiring harnesses and sleeves, where the braid protects signal and power conductors by reflecting incoming electromagnetic energy and conducting the remainder to ground. Braided shields provide 70–95% optical coverage depending on weave tightness, offer a low-resistance path to ground, and terminate easily by crimping — making them the preferred shield construction for power, control and data applications, often combined with foil for maximum shielding effectiveness in extremely noisy environments.
Manufactured to stringent national and international standards, aluminium fine wire braid delivers approximately two-thirds weight reduction versus copper braid of the same construction — a shielded automotive or aerospace harness gets the same EMI protection at roughly one-third the shield weight — together with substantial cost savings, natural corrosion resistance from the aluminium oxide layer, and full recyclability. This combination has made aluminium fine wire the material of choice for EV and automotive wiring harness shields, battery module interconnect braids, marine cabling, and lightweight avionic and industrial shielding systems.
Key Technical Advantages
Grades
Fine wire is drawn in two alloy families, selected by whether the braid's job is conducting or protecting.
| Grade | Conductivity | Typical Applications |
|---|---|---|
| EC Grade 1350 (E1E) | 61% IACS (Minimum) | Conductive braids, grounding braids, screening where conductivity governs |
| 5154 (AlMg3.5) | ≥ 36% IACS | EMI/RFI shield braids, cable sheathing, harness and sleeve braiding where strength and flex-life govern |
Tempers
O (Annealed — softest, maximum flexibility for tight braids) · H12 / H14 / H16 (intermediate) · H18 / H19 (hard drawn — maximum strength). Temper is matched to braider type and coverage specification.
Mechanical & Electrical Properties
| Grade–Temper | UTS (MPa) | Yield typ. (MPa) | Elongation min | Conductivity min |
|---|---|---|---|---|
| 1350-O (Annealed) | 59 – 97 | ~28 | 15 – 25% | 61.8% IACS |
| 1350-H14 (½ hard) | 103 | ~90 | 6% | 61.5% IACS |
| 1350-H19 (extra hard) | 160 – 200 (dia-dep.) | ~140 – 165 | 1.5% | 61.0% IACS |
| 5154-O (Annealed) | 230 – 290 | ~85 – 115 | 15% | 36% IACS |
| 5154-H18 (hard drawn) | 380 – 450 | ~330+ | 2 – 3% | 35% IACS |
Wire standards specify tensile, elongation and resistivity — not yield — so yield values are typical, shown for design reference. Certified batch values on the Mill Test Certificate govern every dispatch.
Sizes
Finer sizes on technical review; heavier sizes up to 3.00 mm on request.
| Most-ordered braid sizes | 0.10, 0.12, 0.16, 0.20, 0.25, 0.30 mm (38 – 29 AWG equivalents) |
| Tolerance | ±0.003 – ±0.005 mm on fine sizes |
| Packaging | Precision plastic spools 1 / 2 / 3 kg · DIN 105 / 125 / 160 / 250 spools · custom spooling per braider specification |
Standards Compliance
| Standard | Description |
|---|---|
| ASTM B230/B230M | Aluminium 1350-H19 wire for electrical purposes |
| ASTM B609 | Aluminium 1350 round wire, annealed and intermediate tempers |
| ASTM B211/B211M | Aluminium-alloy drawn wire (5154 mechanicals) |
| ASTM B258 | AWG diameter series for braid wire sizing |
| IEC 60889 | Hard-drawn aluminium wire for electrical conductors |
| EN 573-3 / EN 1301 | European alloy designation, wire dimensions and tolerances |
| IS 739 | Wrought aluminium and aluminium alloy wire (India) |
| UL 444 / MIL-DTL-17 / IEC Cable Standards | Cable-side specifications — set the braid coverage (70–95%) that determines wire size selection |
Typical Applications
Technical Data Sheet
Aluminium Fine Wire — Full Technical Data Sheet
Request the complete PDF datasheet with certified mechanical, chemical and dimensional data for this product.