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Weldability SIF Silver Solder No. 43 – 1.5mm



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Rated excellent on Google
Over 50 years welding expertise
Free delivery over £85 inc. VAT
6 Rod Packet

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CADMIUM FREE 55 Silver Solder, which is free flowing and ideal for close fitting capillary joints and for colour match on stainless.

A highly-ductile, fast-flowing, cadmium-free silver brazing filler metal. 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 low melting temperature and excellent flow characteristics.

Use with SIF SILVER SOLDER flux.



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 43 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 6 Rod Pkt 1kg
1.5mm RO431506 RX431500


Additional information

Weldability SIF




6 Rod Packet


Click and Collect:
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 55%
Cu 21%
Zn 22%
Sn 2%

Typical Mechanical Properties

Melting Point 630-660°C
Ult Tensile Strength 415 N/mm²
Hardness 140


  • EN ISO 17672 Ag 155
  • EN 1044 Ag 103
  • BS 1845 Ag 14
Weldability SIF Silver Solder No. 39 No. 43

Weldability SIF Silver Solder No. 43 – 1.5mm

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