This is solder with flux core. Voltage has nothing to do with it.

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Q: What kind of soldiers can work for bikes

This answer is for those who want to solder aluminum tubing, to construct bike frames. The quick answer is no. Maiyum solder is for electronics. The solder you want can be found by searching for this in Amazon: 50 Pieces Aluminum Welding Rods 0.08 x 8 Inch Universal Low Temperature Welding Cored Wire Brazing Rod Tube for Electric Power, Drill Tap Polish and Paint . You will need a torch that can burn MAPP gas, and the proper PPE such as welding gloves and a fixed face shield.

Q: How do you solder. Do you put the solder on the iron than run over the wire or it should just melt on the wire without the iron melting the solder?

Solder follows heat, but it's important not to burn off all of the flux before it gets to where it needs to go (flux removes oxidation, which allows the solder to make a strong molecular bond with the surface). Putting solder on the tip of the iron first is a guaranteed way to burn off the flux in the solder before you put it where it needs to go. I typically touch the iron to where I want the solder to go, heat the connection, and then bring the solder in to either touch the same joint. On wires the iron will touch the opposite side as the solder - so the solder flows through toward the heat of the iron. In some applications the connection is too small, so I touch the solder to the iron as close as possible to the connection. If I ever need to apply solder to the iron first and then bring it over to a connection, I use a flux pen or paste flux to coat the connection before soldering it.

Q: Is this stuff magnetic or will it attract magnet?

This solder wire has no magnetic properties, but since it contains tin it is a paramagnetic material. The attraction to magnets is very low and should pose no problems when used in common electronic applications.

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Description

⚡ Solder smarter, not harder — join the pro circuit revolution!

PRECISION PERFECT - 0.6mm diameter wire ideal for detailed circuit work
COMPACT PORTABLE - 100g spool fits perfectly in your toolkit or pocket
VERSATILE DIY ESSENTIAL - Perfect for electronics, repairs, and home projects
CLEAN STRONG CONNECTIONS - 1.8% rosin flux core ensures smooth flow and solid bonds
EFFORTLESS SOLDERING SPEED - Melts quickly at 183°C for fast, reliable joints

This 63-37 tin lead rosin core solder wire features a fine 0.6mm diameter and 1.8% flux content, melting at a low 183°C for fast, clean, and strong electrical soldering. Weighing 100g, it’s compact and perfect for precision electronics, DIY repairs, and professional-grade circuit board work.

Specifications

Manufacturer	Shenzhen joycefook technology Co., Ltd
Part Number	JF6100
Item Weight	3.68 ounces
Package Dimensions	2.32 x 2.17 x 1.26 inches
Item model number	JF6100
Is Discontinued By Manufacturer	No
Size	0.6mm 100g
Color	0.6mm 100g
Material	Metal
Batteries Included?	No
Batteries Required?	No