703 Abrasion Solder
Product Overview
Also known as KappAloy30, 703 Abrasion Solder is a specialised alloy designed for abrasive tinning of aluminium cables without the use of flux. This flux-free nature improves process efficiency by reducing cleaning steps and potential residues, making it ideal for electrical manufacturing applications.
Chemical Composition
| Element | Percentage (% by weight) | Tolerance (%) |
|---|---|---|
| Tin (Sn) | 69.4 – 70.6 | |
| Antimony (Sb) | 0.1 | Max |
| Lead (Pb) | 0.1 | Max |
| Copper (Cu) | 0.0 | Max |
| Zinc (Zn) | 29.5 – 30.5 | |
| Iron (Fe) | 0.02 | Max |
| Arsenic (As) | 0.02 | Max |
| Nickel (Ni) | 0.004 | Max |
| Bismuth (Bi) | 0.1 | Max |
| Cadmium (Cd) | 0.005 | Max |
| Silver (Ag) | 0.03 | Max |
| Aluminium (Al) | 0.0002 | Max |
| Others | Not specified | |
| Total Impurities | 0.22 | Max |
Physical and Mechanical Properties
| Property | Value |
|---|---|
| Solidus | 199°C |
| Liquidus | 316°C |
| Non-toxic | Yes |
| Eutectic | No |
| Density | 7.27 g/cm³ |
| Tensile Strength | 3626-5076 psi (25-35 N/mm²) |
| Hardness (HV) | 17.9 |
Applications and Benefits
This alloy improves surface conductivity and mechanical bonding during the tinning of aluminium cables. It offers excellent abrasion resistance, maintaining coating integrity throughout handling and installation.
The flux-free characteristic reduces environmental impact and lowers cleaning costs, promoting a more efficient manufacturing process.
Manufacturing and Packaging
We cast 703 Abrasion Solder by hand into 250g stick moulds. We package these sticks in 20kg boxes designed to make handling simple and ensure precise application control in industrial settings.
Quality Assurance
DKL Metals rigorously tests each batch to meet proprietary composition specifications, ensuring consistent quality and reliable solder performance.
Learn More!