Can I use in copper water supply lines (drinking water)?

This is lead-free solder, but it has silver in the solder which will make it more expensive for a water solder joint. The chemical makeup is Tin 94% and silver 6%. This solder is used most commonly in refrigeration/air conditioning applications. If you want to use for potable water Harris recommends their speedy solder SPDY61 1/8" x 1# spool

Can this be used instead of brazing to to replace a residential fridge compressor

This is can be used instead of brazing if the discharge (high side) line doesn't get too hot. It for sure is good for the suction (low side) line. It was used for many years on all the lines (high & low side) of refrigeration systems using R12 refrigerant with water cooled condensers where high side pressures/temperatures don't go above 125 degrees F.

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Description

⚡ Stay Brite, Stay Ahead: Solder Like a Pro Every Time!

OPTIMAL 1 LB ALLOY WEIGHT - Perfectly portioned for professional projects without waste or shortage.
READY FOR PROFESSIONAL USE - Non-discontinued, reliable stock from J.W. Harris, a trusted name in solder alloys.
COMPACT PORTABLE PACKAGING - Easily fits in your toolkit or workstation for on-the-go repairs and installations.
PRECISION CRAFTED IN THE USA - Trust the quality and reliability of American manufacturing with every solder joint.
PREMIUM TIN SILVER COMPOSITION - Ensures superior conductivity and strong, durable bonds for your critical builds.

The Stay-brite 8 1/8" 1 lb solder alloy by J.W. Harris is a premium tin-silver blend, crafted in the USA for professional-grade soldering. Packaged compactly at 2x2x2 inches and weighing exactly 1 lb, it offers reliable, high-conductivity performance ideal for precision electronics and hardware projects.

Specifications

Manufacturer	J.W. Harris Company
Part Number	SB861
Item Weight	0.01 ounces
Product Dimensions	2 x 2 x 2 inches
Item model number	SB861
Is Discontinued By Manufacturer	No
Material	Tin and Silver
Item Package Quantity	1
Included Components	1 LB
Batteries Included?	No
Batteries Required?	No

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