SOFT-SOLDERING ALLOYS
Alloys based on Tin for Soft-Soldering.
Lead bearing alloys have particular Health and Safety limitations in applications and uses.
Lead-free alloys, compliant to RoHS regulation, are available.
Available as ingots, bars, sticks, wires and flux-cored wires.
Some alloys are also available in paste: see Powders & Pastes.
Flux cored wires are available with different cores for various applications, as follows:
SN1 EN 29454-1 3.1.1 For Stainless Steel
SN35 EN 29454-1 2.1.2 For Aluminium
SN6 EN 29454-1 2.1.3 For Electromechanics
SN61 EN 29454-1 2.1.2 General Use
SN7 EN 29454-1 1.1.2 Electrical Engineering
SN71 EN 29454-1 1.1.3 For Electronics – NO CLEAN
SN72 EN 29454-1 1.1.1 Colophony
| Code | Composition % | Melting Range SOL-LIQ | Standard | |||||||
| Sn | Pb | Ag | Cu | Sb | Zn | Cd | °C | ISO 9453 | EN 29453 | |
Tin bearing alloys |
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| Sn100 | 99.9 | – | – | – | – | – | – | 232 | – | – |
Tin-Copper alloys |
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| SnCu97/3 | 97 | – | – | 3 | – | – | – | 227-310 | No. 402 | S-Sn97Cu3 |
| Sn99Cu1 | 99,3 | – | – | 0,7 | – | – | – | 227 | No. 401 | S-Sn99Cu1 |
Tin-Silver alloys |
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| Ag2Sn | 98 | – | 2 | – | – | – | – | 221-225 | – | – |
| Ag3,5Sn | 96,5 | – | 3.5 | – | – | – | – | 221 | No. 703 | S-Sn97Ag3 |
| Ag5Sn | 95 | – | 5 | – | – | – | – | 221-235 | No. 704 | – |
| Ag10Sn | 90 | – | 10 | – | – | – | – | 221-300 | – | – |
Tin-Silver-Copper alloys |
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| Ag1SnCu4 | 95,6 | – | 0,4 | 4 | – | – | – | 225-258 | – | – |
| Ag3SnCu0,5 | 96,5 | – | 3 | 0,5 | – | – | – | 217-220 | No. 711 | – |
| Sn99Cu1Ag | 99 | – | 0,3 | 0,7 | – | – | – | 217-227 | – | – |
Tin-Silver-Lead alloys |
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| Ag1,4SnPb | 63 | 35,6 | 1.4 | – | – | – | – | 178 | – | – |
| Ag1,5SnPb | 5 | 93,5 | 1,5 | – | – | – | – | 296-301 | – | – |
Tin-Antimony alloys |
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| SnSb95/5 | 95 | – | – | – | 5 | – | – | 230-240 | No. 201 | S-Sn95Sb5 |
Tin-Lead alloys |
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| SnPb80/20 | 80 | 20 | – | – | – | – | – | 183-205 | – | – |
| SnPb63/37 | 63 | 37 | – | – | – | – | – | 183 | No. 101 | S-Sn63Pb37 |
| SnPb60/40 | 60 | 40 | – | – | – | – | – | 183-190 | No. 103 | S-Sn60Pb40 |
| SnPb50/50 | 50 | 50 | – | – | – | – | – | 183-215 | No. 111 | S-Pb50Sn50 |
| SnPb40/60 | 40 | 60 | – | – | – | – | – | 183-235 | No. 114 | S-Pb60Sn40 |
| SnPb33/67 | 33 | 67 | – | – | – | – | – | 183-242 | – | – |
| SnPb30/70 | 30 | 70 | – | – | – | – | – | 183-255 | No. 116 | S-Pb70Sn30 |
| SnPb8/92 | 8 | 92 | – | – | – | – | – | 280-305 | – | S-Pb92Sn8 |
Tin-Lead-Copper alloys |
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| Sn60Pb38Cu2 | 60 | 38 | – | 2 | – | – | – | 183-190 | No. 161 | S-Sn60Pb38Cu2 |
Tin-Zinc alloys |
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| SnZn80/20 | 80 | – | – | – | – | 20 | – | 200-288 | – | – |
Lead |
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| Pb100 | – | 99,9 | – | – | – | – | – | 327 | – | – |
| Make-up | ||||
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Cast ingots, bars and sticks | |||
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Solid Wires | Ø: | 0,5 ÷ 3 mm | |
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Flux-cored wires | Ø: | 0,8 ÷ 3 mm | |
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Strips | |||
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Powder and Paste | |||
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Rings | |||
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Preforms from Wire and from Strip | |||