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SIF Brazing Rods

1.5MM/2MM SIF SILVER SOLDER NO 40 1KG

SKU RX402000 · 40% Silver

A popular grade of Silver Solder offering good capillary action and ductility in many ferrous and nonferrous applications.

How to select the correct silver solder

One of 5 variants in this range Configure all options →

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Specifications

Classification40% Silver
Diameter (mm)2.0
MaterialSilver Solder
Weight1kg
Technical data & documents View documents

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1.5MM/2MM SIF SILVER SOLDER NO 40 1KG

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1.5MM/2MM SIF SILVER SOLDER NO 40 1KG SKU RX402000

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From the archive · since 1932

As seen in SIF Tips

This product — or its heritage predecessor — features in these issues of SIF Tips, Britain's welding quarterly. Tap a cover to read the original.

1.5MM/2MM SIF SILVER SOLDER NO 40 1KG

Frequently asked questions

Which silver solder do I need?

The correct silver solder depends on the parent materials, joint clearance, service conditions and the strength required from the finished joint. Selecting the appropriate alloy ensures reliable brazing performance.

How do I choose the right silver solder?

Start by identifying the metals you're joining, then consider the required joint strength, operating temperature, joint clearance and corrosion resistance before selecting the most suitable silver brazing alloy.

Why would I choose a higher silver content alloy?

Higher silver content alloys generally offer improved flow characteristics, lower melting temperatures and easier brazing, making them ideal for more demanding or precision applications.

When should I choose a lower silver content alloy?

Lower silver content alloys are often selected where cost is an important consideration and the application does not require the enhanced flow characteristics or reduced brazing temperature of higher silver alloys.

Do I need flux when silver soldering?

Yes. Most silver brazing applications require a suitable brazing flux to remove oxides, protect the joint during heating and allow the filler alloy to flow correctly.

Can silver solder join dissimilar metals?

Yes. Silver brazing alloys are widely used to join dissimilar metals including steel, stainless steel, copper and brass, making them extremely versatile for engineering applications.

Why isn't my silver solder flowing properly?

Poor alloy flow is commonly caused by insufficient heat, contaminated parent materials, incorrect joint clearance or using an unsuitable brazing flux.

What industries use silver solder brazing rods?

Silver brazing alloys are widely used in refrigeration, HVAC, plumbing, aerospace, automotive, jewellery, medical equipment, precision engineering and general manufacturing.

How should silver solder brazing rods be stored?

Store silver solder rods in a clean, dry environment and protect them from moisture, dirt and contamination to maintain consistent brazing performance.

What questions should I ask before choosing a silver solder?

Before selecting a silver brazing alloy, identify: What metals am I joining? What joint strength is required? How close is the joint clearance? What service temperature will the joint operate at? Which brazing flux should I use? Answering these questions will help you select the most suitable silver solder for your application.

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