can this be for brazing copper to steel like refrigerator condenser coils,because i read condenser coil are not completely copper.

Condenser coils come in copper, aluminum and stainless. You can use SSWF on stainless and copper condenser coil. You would need an aluminum brazing rod and Albraze flux for aluminum coils. If determined the braze was going to be copper to copper, then a phos copper would be an even better recommendation and no flux needed. Thank you-BuyWelding Team

Does this contain any phosphorus? (Phosphorus is not allowed for propane applications)

I’m quite certain it does not. I use it to join brass, bronze, and copper with silver and I typically use a propane torch, but I use it to build models and other such items not plumbing or refrigeration work. It can be used to join phosphorus bearing metals though with the exception of Aluminium and magnesium.

I am brazing stainless to same stainless. Is white or black flux better?

Either will work. If you're brazing a thick piece of stainless that will take a lot of heat, you should use the black flux.

Will this corrode electrical wire?

I would not recommend using this product on electrical wiring, it is a brazing flux. Use Silver solder.

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J.W. Harris 348-SSWF1 Ha Sta-Silv White 1# Flux40023

Product ID: 12907681

🔥Active range 1050°F-1600°F

🧴Smooth white paste for easy application

⚖️1 lb jar, perfect for extended projects

R913

Duties & taxes included

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Description

🔥 Elevate your brazing game—flow like silver, finish like a pro!

TRUSTED BY PROS - Backed by 2,126 reviews and a 4.7-star rating, join the community of expert craftsmen who rely on Harris.
EFFORTLESS CLEANUP - Minimal residue that wipes away easily with water or a damp rag—less mess, more progress.
LONG LASTING SUPPLY - Generous 1 lb jar designed to keep your projects flowing without constant restocking.
SUPERIOR SILVER FLOW - Enables silver to flow like water with just a thin film, delivering professional-grade brazing results.
PRECISION HEAT CONTROL - Optimized for brazing between 1050°F and 1600°F, ensuring flawless silver flow every time.

Harris SSWF1 Stay Silv Brazing Flux is a premium white paste flux designed for silver brazing applications within 1050°F to 1600°F. Packaged in a convenient 1 lb jar, it promotes superior silver flow with minimal cleanup, making it a trusted choice among professionals and hobbyists alike.

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