Castolin 157 PA Solder paste

Castolin 157 PA

Ready-to-use, dosable binder suspension made of fine-grained tin-silver-based soft solder powder with flux components in an optimum mixing ratio.
The paste is intended for manual and mechanized processing. Due to its precisely defined viscosity and homogeneous consistency, it is particularly suitable for series production with automated dosing equipment. Excellent wetting and flow properties. Suitable for the food industry and medical technology, as it is free from cadmium, lead, zinc and antimony. Tight, clean seams without rework. High-strength solder joints. Cold-resistant down to - 200 °C.

TECHNICAL DATA
DIN EN ISO 9453:..............................S-Sn96Ag4
DIN1707:...............................................~ L-SnAg5
Solidus/liquidus [° C]:......................221
Tensile strength (on Ms 58) [MPa]:...up to 92
Density (solder content) [g/cm3]:..............approx. 7.3
Grain size (solder content) [μm]:............< 70 μm
Solder powder content [% by weight]:.................81

APPLICATIONS
For gap brazing and tinning, also in series production, e.g.: unalloyed and low-alloy steels, high-alloy steels (stainless CrNi steels), copper and copper alloys, nickel and nickel alloys.
Typical application examples are
Electrotechnical components, surgical and optical instruments, refrigeration technology, fittings, stainless pipe connections, sinks, covers, strainers, vessels and household appliances,
cables, floats, filters.

PROCESSING INSTRUCTIONS
Stir the paste before use. Close the container tightly after removing the paste. Clean soldering surfaces. Round off edges. Coat soldering surfaces with paste. Preheat the workpiece widely and
preheat. Do not overheat. Remove corrosive flux residues with warm water.
Heat sources: Flame soldering (acetylene), flame soldering (propane/butane), soldering lamp, piston soldering, solder bath soldering, HF induction and resistance heating.

Delivery forms
Standard: 1 kg; 0.5 kg