www.cupalloys.co.uk
CuP Alloys (Modelling) Ltd 15 Sandstone Avenue, Walton, Chesterfield, S42 7NS, United Kingdom, 01246 566814, sales@cupalloys.co.uk
Soft Solders
http://www.cupalloys.co.uk
01:24 08-Sep-2010
Lead Bearing Soft Solders Have not Been Banned
The use of lead bearing solders has been restricted in those products associated with the food and drink industries. This is on health and safety grounds.Their use has also been restricted on environmental grounds.Manufacturers and suppliers are responsible for the safe disposal of their product. To avoid the mass return of their production, manufacturers have switched to lead free solders. These regulations apply to electric motors, pcb's, white goods.The restrictions do not apply to model making nor to the production of any product on a non-commercial basis. They do not apply to the activities of the model engineer.
CuP Alloys (Modelling) Ltd offer a range of soft solders. Look at the temperature ranges, there are combinations that facilitate "step soldering."
Generally speaking, if the melting temperature is above 250 deg C, heating is best achieved with a small butane flame, otherwise a soldering iron can be used.
For best results, the joint must be free of any grease. Clean the components with a stiff wire brush or wool. Do not use emery clothes as they can leave a deposit that prevents the flux working. Follow the guidelines in the "Silver Soldering Tips" section. The principles are exactly the same - it's only the temperature that varies.
General purpose free flowing 60/40 tin-lead
Conforms to BS 219 KP
Melting range 187°C
Wire diameters 1.0 and 1.5mm
Available as flux cored wire in 1 metre lengths or 0.5 kg reels and paint.
Also available is a 62/38 alloy paste whose flux residues are non-corrosive. Ideal for the model boat builder.
General purpose 40/60 tin-lead
Conforms to BS 219 Grade G
Melting Range 180 - 220°C
Available as flux cored wire 1 metre lengths or 0.5 kg reels.
Wire diameters 1.0 and 1.5mm
2207 4% silver tin alloy - for stainless steel.
BS 219 96S
Melting Range 220 - 225°C
Available as solid or flux cored wire in 1 metre lengths or 0.5 kg reels.
Wire diameters 1.0 and 1.5mm
It offers an excellent colour match on stainless steel and silver.
Comsol Silver-Tin-Lead
BS 219 5S
1.5% silver tin lead. Melting Temperature 295°C. Can be used in the first of two-stage soldering operations.
Available as solid or flux cored wire in 1 metre lengths or 0.5 kg reels.
Wire diameters 1.0 and 1.5mm
ComSol has excellent fluidity to produces neat fillets.
Use with conventional soft solder fluxes
Alusol - Silver tin lead wire
A solder for joining aluminium and copper aluminium alloys. The wire is cored with a suitable flux for ease of soldering.
Melting temperature 178 - 270°C
Available as flux cored wire in 1 metre lengths or 0.5 kg reels.
Wire diameter 0.9 and 1.5mm
LT145 - 40% tin, 42% lead and 18% cadmium.
Its low melting temperature makes it suitable for repairing zinc based materials eg die cast models.
Melting temperature 145°C
Available as solid wire in 1 metre lengths or 0.5 kg reels.
Wire diameter 1.0 and 1.5mm dia.
Suppliers Certificate of Quality Assurance
Technoweld
Not really a solder, but is a very versatile method of joining/repairing all types of aluminium alloy.
Visit www.technoweld-fusion.com to see a series of videos of it being used.
The use of lead bearing solders has been restricted in those products associated with the food and drink industries. This is on health and safety grounds.Their use has also been restricted on environmental grounds.Manufacturers and suppliers are responsible for the safe disposal of their product. To avoid the mass return of their production, manufacturers have switched to lead free solders. These regulations apply to electric motors, pcb's, white goods.The restrictions do not apply to model making nor to the production of any product on a non-commercial basis. They do not apply to the activities of the model engineer.
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Generally speaking, if the melting temperature is above 250 deg C, heating is best achieved with a small butane flame, otherwise a soldering iron can be used.
For best results, the joint must be free of any grease. Clean the components with a stiff wire brush or wool. Do not use emery clothes as they can leave a deposit that prevents the flux working. Follow the guidelines in the "Silver Soldering Tips" section. The principles are exactly the same - it's only the temperature that varies.
General purpose free flowing 60/40 tin-lead
Conforms to BS 219 KP
Melting range 187°C
Wire diameters 1.0 and 1.5mm
Available as flux cored wire in 1 metre lengths or 0.5 kg reels and paint.
Also available is a 62/38 alloy paste whose flux residues are non-corrosive. Ideal for the model boat builder.
General purpose 40/60 tin-lead
Conforms to BS 219 Grade G
Melting Range 180 - 220°C
Available as flux cored wire 1 metre lengths or 0.5 kg reels.
Wire diameters 1.0 and 1.5mm
2207 4% silver tin alloy - for stainless steel.
BS 219 96S
Melting Range 220 - 225°C
Available as solid or flux cored wire in 1 metre lengths or 0.5 kg reels.
Wire diameters 1.0 and 1.5mm
It offers an excellent colour match on stainless steel and silver.
Comsol Silver-Tin-Lead
BS 219 5S
1.5% silver tin lead. Melting Temperature 295°C. Can be used in the first of two-stage soldering operations.
Available as solid or flux cored wire in 1 metre lengths or 0.5 kg reels.
Wire diameters 1.0 and 1.5mm
ComSol has excellent fluidity to produces neat fillets.
Use with conventional soft solder fluxes
Alusol - Silver tin lead wire
A solder for joining aluminium and copper aluminium alloys. The wire is cored with a suitable flux for ease of soldering.
Melting temperature 178 - 270°C
Available as flux cored wire in 1 metre lengths or 0.5 kg reels.
Wire diameter 0.9 and 1.5mm
LT145 - 40% tin, 42% lead and 18% cadmium.
Its low melting temperature makes it suitable for repairing zinc based materials eg die cast models.
Melting temperature 145°C
Available as solid wire in 1 metre lengths or 0.5 kg reels.
Wire diameter 1.0 and 1.5mm dia.
Suppliers Certificate of Quality Assurance
Technoweld
Not really a solder, but is a very versatile method of joining/repairing all types of aluminium alloy.
Visit www.technoweld-fusion.com to see a series of videos of it being used.
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