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Weldability SIF Silver Solder No. 40 – 1.5 to 2.0mm


40% Silver Solder 2.0mm Rod Cadmium Free


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

It is suitable for all ferrous and non-ferrous metals except aluminium. It can be used with a range of heat sources. It also offers a combination of medium melting temperature and flow characteristics.




Suitable for use in the heating, ventilation, refrigeration, electrical, and process industries. It is particularly well suited for use in the medical equipment and food industries. However, this alloy should only be used to form capillary joints.

This is a cadmium free silver solder offering excellent fluidity and wetting characteristics. Ideal for applications within the food and medical equipment industries. It is used as a general silver brazing filler metal as well as in joining copper to steel in refrigeration and pipe work. SIF Silver Solder No 39 can be used to join most common engineering metals – copper, copper alloys including brasses, bronzes, gun metal, nickel silver, aluminium bronze, copper nickel, and steels including mild, carbon, tool steel, stainless steels, and low alloy steel.


Can be used with:

  • Oxy Acetylene
  • Oxy Propane
  • Butane
  • Air Butane



Diameter 1kg
1.5mm RX401500
2.0mm RX402000


Additional information
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Weldability SIF






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Free Click and Collect with no minimum spend from our warehouse on the Empress Park, Southampton with on-site parking. Once your order has been processed, we will advise you when it is ready for pickup.  Just want advice?  No problem.  Feel free to call in to speak to one of our friendly experts.

EWS Fleet Coverage Areas: 
Southampton | Eastleigh | Winchester | Alton | Farnham | Petersfield | Havant | Hayling Island | Waterlooville | Fareham | Portsmouth | Gosport | Chichester | Arun | Worthing | New Forest | Christchurch | Salisbury | Wiltshire | Test Valley | Basingstoke and Deane | West Berkshire | Reading | Hart | Waverley | East Hampshire | East Dorset | Hampshire | Bournemouth | Poole | Lymington | Ringwood | Verwood | East Preston | Goring-by-Sea | Lancing | Shoreham-by-Sea | Steyning | Bramber | Horsham | Adur

Nationwide Delivery (all items excluding gas cylinders):
Free UK mainland (England, Scotland and Wales) delivery on orders over £85 inc. VAT.
UK mainland delivery is £7.50 inc. VAT on orders under £85 inc. VAT.
UK islands and Northern Ireland shipping costs may vary.

UK Delivery for Gas Cylinders:
Shipping costs for gas cylinders are calculated at checkout once the delivery postcode is entered.

International Delivery:
Please contact us for an accurate delivery quote.


Typical Weld Metal Composition

Ag 40%
Cu 30%
Zn 28%
Sn 2%

Typical Mechanical Properties

Melting Point 670-710°C
Ult Tensile Strength 440 N/mm²
Hardness 130

EN ISO 17672 Ag 140

Weldability SIF Silver Solder No. 40 - 1.5 to 2.0mm

Weldability SIF Silver Solder No. 40 – 1.5 to 2.0mm

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