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*Soldering filler materials are available in many different alloys for differing applications. In electronics assembly, the eutectic alloy of 63% tin and 37% lead (or 60/40, which is almost identical in performance to the eutectic) has been the alloy of choice. Other alloys are used for Plumbing, mechanical assembly, and other applications.
An eutectic formulation has several advantages for soldering; chief among these is the coincidence of the liquidus and solidus temperatures, i.e. the absence of a plastic phase. This allows for quicker wetting as the solder heats up, and quicker setup as the solder cools. A non-eutectic formulation must remain still as the temperature drops through the liquidus and solidus temperatures. Any differential movement during the plastic phase may result in cracks, giving an unreliable joint. Additionally, a eutectic formulation has the lowest possible melting point, which minimizes heat stress on electronic components during soldering.
Common solder alloys are mixtures of tin and lead, respectively:
* 63/37: melts at 183 °C (361 °F) (eutectic: the only mixture that melts at a point, instead of over a range)
* 60/40: melts between 183-190 °C (361-374 °F)
* 50/50: melts between 185-215 °C (365-419 °F)
Lead-free solders are suggested anywhere young children may come into contact with (since young children are likely to place things into their mouths), or for outdoor use where rain and other precipitation may wash the lead into the groundwater.
Lead-free solder alloys melt around 250 °C (482 °F), depending on their composition.
For environmental reasons, 'no-lead' solders are becoming more widely used. Unfortunately most 'no-lead' solders are not eutectic formulations, making it more difficult to create reliable joints with them.
Other common solders include low-temperature formulations (often containing bismuth), which are often used to join previously-soldered assemblies without un-soldering earlier connections, and high-temperature formulations (usually containing silver) which are used for high-temperature operation or for first assembly of items which must not become un-soldered during subsequent operations.
Alloying silver with other metals changes the melting point, adhesion and wetting characteristics, and tensile strength. Of all the brazing alloys, the silver solders have the greatest strength and the broadest applications.
Specialty alloys are available with properties such as higher strength, better electrical conductivity and higher corrosion resistance.
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Tin and lead mixed together makes what?
solder--its an alloy used 4 joining metals
Special property of solder?
Solder has a relatively low melting point, and it wets many different metals allowing it to be used to join (solder) them together. It is also fairly resistant to corrosion when the correct solder alloy is applied to the work. We see a lot of solder used in electrical and electrical applications, so it's a fairly good electrical conductor.
What makes up solder?
lots of things
What element makes overhead sprinklers?
An aluminium alloy is adequate.
What makes a metal less malleable?
I am going to put this into simple words. An alloy makes a metal less maleable. This is because the alloy prevents the layers in a metal from moving. It sort of gets in the way.
Tin and lead mixed together makes what?
solder--its an alloy used 4 joining metals
What is the function of the flux in soldering?
Flux can be in many different forms. it can be in the solder, it can be in a soft form like butter, or it can be in a pen like a tide stain stick. it is used on the solder iron and on the thing you're soldering to make a good surface for the solder to stick to. Basically it makes soldering easier, it can be done with out it.
Special property of solder?
Solder has a relatively low melting point, and it wets many different metals allowing it to be used to join (solder) them together. It is also fairly resistant to corrosion when the correct solder alloy is applied to the work. We see a lot of solder used in electrical and electrical applications, so it's a fairly good electrical conductor.
What makes up solder?
lots of things
What is soldering wire?
Solder is a group of metallic alloys that melts at a relatively low temperature and is generally used to connect other pieces of metal together. The low melting point makes it useful for some applications, especially electronic circuitry and some plumbing applications, though it should be noted that plumbing solder is a different alloy than electronic solder and plumbing solder has little or no lead to minimize lead exposure to the people who drink the water. Having described what solder IS, soldering wire is just that, its a wire that is made of solder. Solder wire is useful when working on electronic circuits since it allows the user to control how much will be put on an electronic connection. Solder wire comes in several sizes, as well as with or without a flux core. Flux is a material (usually either acidic or rosin) that encourages melted solder to flow onto other metals, usually copper, iron or brass. Other types of solder are available for use on materials such as aluminum, but solders should match the application to match the type of metals you are joining.
Can you have an example of alloys?
An alloy is a solution of metals and/or combined with one or more non-metals. It is a solution because one metal (solid) dissolves in another metal (solid) and may contain other elements (solid) as well. An alloy retains the properties common to metal, but is not pure metal.Examples:Brass (copper and zinc)Steel (iron and carbon)Bronze (copper and tin)
What makes a solder work well on a PCB?
use wax with the solder n dont even use a soldering wire of large diameter.
What temperature is a soldering iron?
A soldering iron is a metal hand held probe type object heated by gas or electric for melting solder (a mixture of tin and lead). Solder is normally used for joining electrical wires and making soldered, leak proof, connections between pieces of copper pipe. It is however very hot, reaching temperatures of over 400 degrees Celsius. It is a tool (usually copper) that is heated and then applied to a joint to melt the solder and heat the metal so it will accept the solder. Some are heated by electricity some are heated in a small furnace. See "What is soldering iron" vipprogrammer.com/soldering-stations-manufacturers-36_116 it heats up your solder and makes it melt, it makes the joints in your circuit firm. it makes a little blob of solder.
WHAT IS THE elements is a metal?
That metal, if it is a pure elemental metal. Each element that makes up the alloy, if it is a metal alloy.
What element makes overhead sprinklers?
An aluminium alloy is adequate.
What makes a metal less malleable?
I am going to put this into simple words. An alloy makes a metal less maleable. This is because the alloy prevents the layers in a metal from moving. It sort of gets in the way.
Solder - lead and tin uses?
A solder is a metal or alloy that has a melting point range of 90 to 450 degrees Celsius (200 to 840 degrees Fahrenheit). The melting point range makes sure that the metal or alloy is easily handled at room temperature, can be melted to join other metallic surfaces when a moderate amount of heat is applied, and returns to a solid state when it cools down to make the joining permanent. Lead has a melting point of 327.46 degrees Celsius (621.43 degrees Fahrenheit) and therefore it can be used as solder. Mercury, however, has a melting point of -38.83 degrees Celsius (-37.89 degrees Fahrenheit) and it is liquid even at room temperature. Therefore it cannot be used as solder because a liquid that does not solidify cannot be expected to join two surfaces permanently.
