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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⚡ Stay-Brite SB861: Brighten your builds with pro-grade solder!

COMPACT PORTABLE - Small 2.4” cube fits easily in any tool kit or workspace.
OPTIMAL 1 LB PACKAGING - Perfectly portioned for professional projects without waste.
PREMIUM TIN SILVER ALLOY - Ensures superior conductivity and durable, clean joints.
TRUSTED J W HARRIS BRAND - Industry-leading reliability for consistent soldering success.
PRECISION AMERICAN CRAFTSMANSHIP - Proudly manufactured in the USA for unmatched quality control.

The Stay-Brite 8 1/8" 1 lb solder alloy (model SB861) by J.W. Harris is a premium tin and silver blend, crafted in the USA. Its compact 2.4-inch packaging and precise 1 lb weight make it ideal for professional-grade soldering, delivering reliable conductivity and clean joints every time.

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Manufacturer	J.W. Harris Company
Part Number	SB861
Product Dimensions	5.08 x 5.08 x 5.08 cm; 0.28 g
Item model number	SB861
Material	Tin and Silver
Item Package Quantity	1
Included Components	1 LB
Batteries included?	No
Batteries Required?	No
Item Weight	0.28 g

Stay-Brite 8 1/8" 1#10009 (348-SB861) Category: Solder Alloys and Fluxes

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