ER308L wire is for 304 and 304L stainless steel.

ER309L and E309L-T1 wire is for 309 stainless steel.

ER316L and E316L-T1 wire is for 316 stainless steel.

ER347 wire is for 321 and 347 stainless steel.

Pair this wire with an MIG gun to fuse aluminum pieces together.

ER1100 wire is for 1100, 3003, and 5005 aluminum. Soft and easy to form, it’s often used to weld thin-gauge aluminum and foil. It also resists chemicals and corrosion. Anodize this wire to create a bright finish.

ER4043 and ER4047 wire is for 43, 356, 3003, 3004, 5052, 6061, and 6063 aluminum. Choose ER4047 wire when leak-tight joints are a must, such as when welding very thin aluminum or products that will hold pressurized liquids or gases. It flows more easily when melted than ER4043, so it spreads out and fills in more of the space between two pieces of your weld before hardening. It also shrinks less as it cools, which means it’s less likely to distort your weld. This wire stands up to prolonged high heat. Once hardened, it produces a bright finish with little soot.

Made of indium, this solder is soft and malleable—even as temperatures approach absolute zero—to form an airtight seal between metal and certain non-metal materials. It’s commonly used in cryogenic applications, including with liquid nitrogen. Unlike tin-based solders, this solder won’t damage gold plating on circuit boards. It’s a good conductor of heat and electricity, as well. Indium-based solder can be cold welded, meaning it will bond to itself without heat. More durable than standard tin-lead solder, this solder is less likely to crack from repeated temperature swings. It’s low outgassing, so it’s good for use in high-vacuum applications. Use soldering flux to prepare workpieces for this solder.

100% indium solder has better thermal conductivity than solder that contains tin, and will cold weld more easily. However, it has lower tensile and shear strength than solder with tin.

48% tin solder has greater tensile and shear strength than 100% indium solder, but lower thermal and electrical conductivity.

Made with lead and silver, this solder has greater tensile strength and density than other indium-based solders, giving it a stronger hold. Indium is soft and malleable—even as temperatures approach absolute zero—allowing this solder to form an airtight seal between metal and certain non-metal materials. It’s commonly used in cryogenic applications, including with liquid nitrogen. Unlike tin-based solders, this solder won’t damage gold plating on circuit boards. It’s also a good conductor of heat and electricity, although not as good as solder with greater indium content. Indium-based solder can be cold welded, meaning it will bond to itself without heat. More durable than standard tin-lead solder, this solder is less likely to crack from repeated temperature swings. It’s low outgassing, so it’s good for use in high-vacuum applications. Use soldering flux to prepare workpieces for this solder.