Sn60Pb40 SW21
The most popular solder wire with flux, for professional use.
Alloy designation in accordance with ISO 9453:2014: Sn60Pb40 (103)
Product type: Cored solder wire
Flux: SW21
1. General characteristics
The solder was produced in the first smelt of tin and lead. The composition of the solder complies with the ISO 9453:2014 standard. SW21 is organic, water-soluble based, halide activated flux. The solder is soldering most metals except aluminum and stainless steel. If used in electronics and electrotechnics it is recommended to remove flux residues. Residues of flux after soldering are water washable. It is leaded alloy for manual and automatic processes where meeting the requirements of the RoHS2 Directive is not required..
The product is intended for professional use.
2. Chemical compositions, mass fraction in %
| Sn | Pb | Sb | Bi | Cd | Cu | Au | In | Ag | Al | As | Fe | Ni | Zn |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 59,50 - 60,50 | rest | max 0,20 | max 0,10 | max 0,002 | max 0,08 | max 0,05 | max 0,10 | max 0,10 | max 0,001 | max 0,03 | max 0,02 | max 0,01 | max 0,001 |
3. Physical characteristics
| Melting point (solidus/liquidus) | 183/190°C |
| Density | 8,50 g/cm3 |
| Electrical conductivity | 0,153 μΩ•m |
| Thermal conductivity | 49 W/m•K |
| Tensile strength | 535 kgf/cm2 |
| Elongation at break | 40 % |
| Hardness | 16 HB |
| Suggested operating temperatures | 340 - 420°C |
4. SW21 flux
Organic, water-soluble based, halide activated flux. Special flux composition offers good solderability on various metal surfaces excluding aluminum and its alloys. Residues of flux after soldering are water washable if cleaning is necessary or required. The flux is exceptionally well suited for flame soldering.
| Flux type acc. to DIN 8511 | SW25 |
| Flux type acc. to ISO 9454 | 2.1.2B |
| Flux type acc. to J-STD-004 | ORH1 |
| Flux content | 2,0 +/- 0,2%; 3 cores of flux (1 core or other flux content on request) |
| Halide content | > 2,0% |
| Acid Value | not applicable |
| SIR test (PN-EN ISO 9455-17) | no data |
| Washability | Recommended washing |
5. Other information
| Available diameters |
0,25 • 0,38 • 0,50 • 0,56 • 0,70 • 0,80 • 0,90 • 1,00 • 1,20 • 1,50 • 1,60 • 2,00 • 2,50 • 3,00 • 4,00 mm other on request |
| Packed |
50 g – cartons 120 pcs. other on request |
| Expiration date | 3 years from the end of the year of production. for example: batch 61112233 = date of production 2016, date of expiry 2019 |
| Label | Reels and cartons marked with alloy type, flux type, diameter, net weight and batch number. |
| Storage | Store at room temperature, in a dry place and beyond the reach of children. |
Files to download:
Sn60Pb40 SW21 - Technical data sheet
Sn60Pb40 SW21 - Safety data sheet
Physical, mechanical and chemical properties available in TDS (download above).
