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Since question is not clear two answers can be given on the assumption that the question is about dry soldering. Thoroughly clean the part to be soldered, apply flux re-solder the connection.

The second answer is normally lead will not be kept on a soldering point. the technician doing soldering has to use lead and flux separately.

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There are still solders that contain lead. The European Union prohibited excessive amounts of lead in consumer products (WEEE and RoHS), so there are lead-free solders. But there are industries in which the lead-free solders are not acceptable.

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Q: Why does solder no longer have lead in it?
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Should I use acid or solid or resin core solder for copper pipe?

Use lead-free solder, 0.2 percent lead or less. Lead free means NO Lead your better off with a silver bearing alloy as it has a longer pasty range or 95% tin 5% antimoney Actually the term "solder" means lead bearing according to the AWS specifications


What does tin and lead equal?

Tin and lead make solder.


Why is lead-free solder used?

Lead is toxic to humans (causes brain damage) thus when using a solder to join copper water pipes it is best not to use a solder containing lead as this will get into the water passing through the pipes and slowly poison the user of this water.


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.


What year did lead free solder come out?

in January of 2006 the EU mandated lead free electronics.

Related questions

Should I use acid or solid or resin core solder for copper pipe?

Use lead-free solder, 0.2 percent lead or less. Lead free means NO Lead your better off with a silver bearing alloy as it has a longer pasty range or 95% tin 5% antimoney Actually the term "solder" means lead bearing according to the AWS specifications


Solder is made of tin and lead but what is the other chemical?

Traditional electronics solder also contains resin.


What does tin and lead equal?

Tin and lead make solder.


Is solder a element or a compound?

It is a mixture


Do plumbers use solder?

Yes many types depending on application and lead free alloys as solder by definition means lead. Solder such as 40 - 60 50 -50 60- 40


Lead pipe connected to copper pipe?

Easiest way to connect lead to copper /brass is a wiped joint consisting 40 - 60 solder alloy as this gives a longer pasty range


What products are made using soft solder?

soft solder is made of tin and lead. :D


Which alloy is made from tin and lead?

Solder


What type of solder is used in electronics and why?

lead.


What are the two alloys used to construct electronic circuit board solder?

Tin and Lead solder is the most common. The international trend is changing as the EU nations are moving toward non lead based solder.


Why is lead-free solder used?

Lead is toxic to humans (causes brain damage) thus when using a solder to join copper water pipes it is best not to use a solder containing lead as this will get into the water passing through the pipes and slowly poison the user of this water.


Which solder is best for sweating fitting used for a water heater installation?

Lead free solder found in most plumbing or hardware stores.