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Pb50Sn50 SW26

An alternative to the most popular solder wire (Sn60Pb40) with flux. The product is intended for professional use.

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Alloy designation in accordance with ISO 9453:2014: Pb50Sn50 (111)
Product type: Cored solder wire
Flux: SW26

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. SW26 solid flux is based on rosin and halide formulations. It is leaded alloy for manual and automatic processes where meeting the requirements of the RoHS2 Directive is not required.

2. Chemical compositions, mass fraction in %

Sn Pb Sb Bi Cd Cu Au In Ag Al As Fe Ni Zn
49,50 - 50,50 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 / 215°C
Density8,87 g/cm3
Electrical conductivity0,158 μΩ•m
Thermal conductivity48 W/m•K
Tensile strength420 kgf/cm2
Elongation at break35%
Hardness14 HB
Suggested operating temperatures340 - 420°C

4. SW26 flux

acc. to DIN 8511SW26
acc. to ISO 94541.1.2B
acc. to J-STD-004ROL1
Flux content2,5 +/- 0,2% other on request
Halide content 0,5%
Acid Value215 ±10 mg KOH/g
SIR test (PN-EN ISO 9455-17)no data avaliable
WashabilityOrganic solvents, e.g. IPA

5. Other information

Available diameters

• 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


50 g – cartons 120 pcs.
100 g – cartons 60 pcs.
250 g – cartons 5 kg
500 g – cartons 5 kg
1 kg – cartons 10 kg

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:

Pb50Sn50 SW26 - karta techniczna

Pb50Sn50 SW26 - Safety data sheet

Physical, mechanical and chemical properties available in the TDS (download above).

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