Search results
Results from the WOW.Com Content Network
Most lead-free replacements for conventional 60/40 and 63/37 Sn-Pb solder have melting points from 50 to 200 °C higher, [17] though there are also solders with much lower melting points. Lead-free solder typically requires around 2% flux by mass for adequate wetting ability. [18]
Good fatigue resistance combined with low melting point. Reasonable shear strength and fatigue properties. Combination with lead-tin solder may dramatically lower melting point and lead to joint failure. [13] Bi 50.0 Pb 31.2 Sn 18.8: 97: Pb: No: Newton's metal: Bi 50 Pb 28 Sn 22: 109: Pb: No: Rose's metal. It was used to secure cast iron ...
In electronics assembly, the eutectic alloy with 63% tin and 37% lead (or 60/40, which is almost identical in melting point) has been the alloy of choice. Other alloys are used for plumbing, mechanical assembly, and other applications.
60-40 Tin-lead solder has a melting temperature around 370 degrees F. What the article says is that any alloy that melts below 450 C is considered a solder, higher melting-point alloys are considered brazes. 60-40 Tin-lead certainly qualifies as a solder, melting at 370 F. Might not be a bad idea to clear that up if you'd like.
This latter combination is strong, has a low melting range, and melts and sets quickly (i.e., no 'plastic' range between the solid and molten states like the older 60% tin / 40% lead alloy). Higher tin compositions give the solder higher corrosion resistances, but raise the melting point. Another common composition is 11% tin, 37% lead, 42% ...
The molten bath can be any suitable filler metal, but the selection is usually confined to the lower melting point elements. The most common dip soldering operations use zinc-aluminum and tin-lead solders. Solder pot metal: cast iron or steel, electrically heated. Bath temperature: 220 to 260 °C (for binary tin-lead alloys) or 350 to 400 °C ...
* 63/37: melts between 180-185°C * 60/40: melts between 183–190°C * 50/50: melts between 185–215°C * lead-free solder: melts around 250°C While in this article, the temperature ranges given are: Lead-based solder uses 250°C to 280°C or 300°C while lead-free soldering needs a higher temperature, about 350°C to 400°C.
Soft soldering uses a filler that melts at a lower temperature than the workpiece, often a lead-tin solder alloy. Brazing and hard soldering use a higher temperature filler that melts at a temperature which may approach that of the base metal, and which may form a eutectic alloy with the base metal.