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Traditional Sn/Pb Alloys since 1902

Tin-Lead 50/50 Solder Sticks

Sn50Pb50 alloy for sheet-metal work, zinc coffin liners and traditional industrial applications

50/50 Sn50Pb50 alloy solder sticks produced by Dickmann since 1902 for traditional industrial applications. A lead-containing alternative to RoHS lead-free alloys, intended for sheet-metal work, zinc coffin liners and industrial applications outside the scope of EEE. ISO 9001:2015 certified.

50/50 tin-lead solder sticks in a 25 kg box

Why Choose Dickmann Sn50Pb50 Solder Sticks

The traditional reference alloy for sheet-metal work, art glass and zinc coffin liners

Industrial Lot Traceability
Chemical analysis certificate for every lot (spectrometric analysis, spark OES). Complete traceability lot → analysis → customer. A differentiator compared with artisanal foundries.
183-215 °C Pasty Range
The Sn50/Pb50 composition is not eutectic: it has a melting range that allows shaping and finishing. Suitable for bead soldering on zinc and galvanised sheet.
ISO 9001 Industrial Supply
Lots consistent over time, stock confirmation within 24/48 hours, nationwide supply on pallets of 50-1000 kg. ISO 9001:2015 certification since 2006.
Custom Compositions and Formats
In addition to standard 50/50, 33/67, 35/65, 40/60, 60/40 and custom formats are available on request. Pricing linked to the daily LME.

50/50 Solder Stick Technical Specifications

Metallurgical and dimensional data of the Sn50/Pb50 alloy

PropertyValueUnitNotes
Nominal compositionSn 50 / Pb 50%Balanced tin-lead
Solidus183°CStart of melting
Liquidus215°CFully molten
Pasty range32°CIdeal for shaping
Density8.9g/cm³At 20°C
Tensile strength35-45N/mm²Bulk alloy, literature values
Stick cross-section10 x 6mmHalf-moon, '50%' mark
Standard length410mm41 cm — industry standard
Weight per stick~150gVaries with cross-section
Standard packaging25kgBox, pallets on request

Application Sectors

Where Sn50Pb50 tin-lead solder sticks are used

Zinc Coffin Liners

Perimeter sealing soldering of zinc coffin liners for industrial and funeral use. The pasty range of 50/50 allows continuous flow and shaping of the bead, for a hermetic seal.

Sheet-Metal Work and Gutters

Soldering of gutters, downpipes, flashings and fittings in zinc, titanium zinc and galvanised sheet. For titanium zinc, manufacturers specify 40/60 or 50/50 alloys with low antimony (Sb < 0.5 %).

Coffins and Funeral Articles

Hermetic closure by soldering of zinc caskets, required by art. 30 of Italian DPR 285/1990. Solder sticks in 25 kg boxes for funeral homes, stonemasons and coffin suppliers.

Leaded Art Glass

Soldering of the joints of lead cames in art glass windows: 50/50 sets quickly and gives strong joints. For the Tiffany technique on copper foil, 60/40 is normally used.

Comparison of Available Sn/Pb Compositions

Which composition to choose depending on the application

CompositionSolidus / LiquidusTypical useDickmann availability
Sn 33 / Pb 67183 / about 250 °CHeavy, non-aesthetic work, foundryOn request
Sn 35 / Pb 65183 / 245 °CEconomical sheet-metal work, rough fittingsOn request
Sn 40 / Pb 60183 / 238 °CSheet-metal work, titanium zincOn request
Sn 50 / Pb 50 ✅183 / 215 °CSheet-metal work, zinc, coffin linersImmediately in stock
Sn 60 / Pb 40183 / 190 °CFine soldering, Tiffany glass, refillsImmediately in stock
Sn 63 / Pb 37183 / 183 °C (eutectic)Leaded electronics (legacy)On request

The 50/50 alloy is the most requested on the market because its pasty range of about 32 °C allows manual shaping of the bead on zinc and galvanised sheet, which is difficult with eutectic alloys. For titanium zinc, manufacturers specify 40/60 or 50/50 alloys with low antimony (Sb < 0.5 %).

Frequently Asked Questions about 50/50 Solder Sticks

Everything you need to know before ordering

Only if the product is outside the scope of RoHS or if an exemption covers that use. For equipment subject to the directive, a lead-free alloy such as SAC305 or 99SnCuNiGe (SN100C equivalent) is required. In any case, with its wide pasty range 50/50 is not suitable for PCBs and SMD.

NO. Lead-acid batteries require controlled-purity alloys, with specification limits of a few ppm for gas-generating impurities (Ni, Te, Co, Fe, Mn). Standard 50/50 is not formulated for these limits and can cause gassing, self-discharge and reduced service life. A dedicated formulation exists for battery soldering: contact us.

50/50 has a wide pasty range (183-215 °C) that allows shaping of the bead — essential on zinc and in sheet-metal work. 60/40 melts almost like the eutectic (183-190 °C) and produces brighter joints that are less easy to shape: better for fine soldering such as Tiffany glass or refills.

Standard solder sticks have a semicircular cross-section of approximately 10×6 mm, with the flat side bearing the embossed '50%' mark. This geometry makes it easier to grip with pliers and to rest the stick on the sheet during soldering.

Yes. On zinc and titanium zinc use a flux specific for zinc, based on zinc and ammonium chlorides, preferably the one specified by the sheet manufacturer: titanium zinc producers advise against neat muriatic acid. Remove the residues immediately with a damp cloth. We supply gel and liquid fluxes: see our fluxes page.

The price of 50/50 alloy is linked to the daily LME (London Metal Exchange) prices of tin and lead, plus the processing margin. We provide a fixed quote valid for 24-48 hours at the time of ordering. For continuous supply we agree a monthly or quarterly average price.

Standard: 25 kg box. Industrial supply: pallets of 50, 100, 500 or 1000 kg with shipping within Italy or the EU. For orders below 25 kg, contact us for dedicated terms.

Yes, every lot is supplied with a chemical analysis certificate by spectrometry (spark OES) covering Sb, As, Bi, Cu, Fe, Ni, Ag, Zn and other elements, with traceability from lot to customer. Dickmann operates an ISO 9001:2015 certified quality management system.

Store in a dry place at room temperature, away from sources of moisture that could cause surface oxidation. 50/50 does not have a critical shelf life like SMD pastes: stored correctly, it can be used indefinitely.

Request a Quote for 50/50 Solder Sticks

Explore the dedicated applications: zinc coffin soldering and lead-acid batteries (dedicated controlled-purity formulation).

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