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The Differences Between Aluminum Wire Drawing Dies and Copper Wire Drawing Dies.
The Differences Between Aluminum Wire Drawing Dies and Copper Wire Drawing Dies.
1. Differences in Material Properties
| Property | Aluminum Wire | Copper Wire |
| Hardness | Lower (Softer, prone to sticking) | Higher (More wear-resistant) |
| Ductility | Excellent (Easily deformed) | Good (Requires greater drawing force) |
| Friction Coefficient | Higher (Prone to adhesion with dies) | Lower (Better fluidity) |
| Oxidation Tendency | High (Rapid oxidation in air) | Lower (Slower oxidation rate) |
2. Core Design Differences in Dies
| Design Parameter | Aluminum Wire Drawing Die | Copper Wire Drawing Die |
| Die Core Material | Ultra-hard alloy or PCD (Polycrystalline Diamond), anti-adhesion | Cemented carbide or natural diamond, high wear resistance |
| Die Angle | Larger entrance angle (Reduces contact area, minimizes sticking) | Smaller entrance angle (Adapts to deformation of harder material) |
| Bearing Zone Length | Shorter (Reduces friction heat & aluminum buildup) | Longer (Ensures dimensional accuracy & surface finish) |
| Surface Finish | Extremely high polish (Prevents aluminum adhesion) | High polish (Less stringent than for aluminum) |
3. Economic Comparison
| Factor | Aluminum Wire Dies | Copper Wire Dies |
| Die Cost | Higher (PCD/special materials required) | Lower (cemented carbide often sufficient) |
| Maintenance Frequency | Higher (regular cleaning of residues needed) | Lower (slow wear progression) |
| Downtime Cost | Higher (time-consuming cleaning/replacement) | Lower |
Changzhou Shen Litong Mould invites you to visit the exhibition
From August 27th to 29th, 2025, at SHANGHAI NEW INTERNATIONAL EXPO CENTRE，the 12th China International Wire&Cable Industry Exhibition (Hall E1, G21), Shen Litong Dies sincerely invites you to visit, exchange and offer guidance, and jointly explore new developments in the industry.
Read MoreThe Differences Between Aluminum Wire Drawing Dies and Copper Wire Drawing Dies.
The Differences Between Aluminum Wire Drawing Dies and Copper Wire Drawing Dies.
Read MoreComparing PCD Die Blank Grain Sizes
Near-single crystal structure, virtually grain-boundary-free surface, hardness approaching natural diamond.
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