LOW
TEMPERATURE ALLOYS
Soldering is achieved
using a filler metal with a temperature lower than 450°C.
Tin/lead alloys are the most commonly used; however due to its noxiousness, lead tends to disappear for food and health applications*. As a substitute, tin/copper alloys and tin/silver alloys can be used, as they offer higher mechanical strength and working temperatures than conventional alloys, while keeping relatively low melting ranges.
|
Reference |
Composition |
Melting range C° |
Applications |
|||
|
Sn |
Pb |
Other |
Solidus |
Lipidus |
||
|
PRO/SN18 |
18 |
82 |
|
190 |
285 |
Car bodywork, plumbing, radiators, tinplate,
zinc, tin work |
|
PRO/SN28 |
28 |
72 |
|
183 |
265 |
|
|
PRO/SN33 |
33 |
67 |
|
183 |
250 |
|
|
PRO/SN40 |
40 |
60 |
|
183 |
240 |
Electrical work, plumbing, tinplate, tin
work, electronics. |
|
PRO/SN50 |
50 |
50 |
|
183 |
216 |
|
|
PRO/SN60 |
60 |
40 |
|
183 |
190 |
Electrical engineering, electronics |
|
PRO/SN63 |
63 |
37 |
|
183 |
Wave soldering |
|
|
PRO/SN100 |
100 |
|
|
232 |
Tinning |
|
|
PRO/EA13F |
5 |
93.5 |
Ag 1.5 |
296 |
301 |
High working temperatures |
|
PRO/EA17 |
96.5 |
|
Ag 3.5 |
221 |
Good mechanical strength. Lead-free alloys
for food and/or sanitary applications. |
|
|
PRO/EA17FC |
96.5 |
|
Ag 3.5 |
221 |
||
|
PRO/EA121 |
94 |
|
Ag 6 |
221 |
240 |
|
|
PRO/ECU |
97 |
|
Cu 3 |
227 |
||
|
SOLDER
paint 30.40 and 100 % of tin. |
||||||
Forms :
Half-round rods, bars, sol id wire, flux-core wire, foils, pastes and powders,
shaped parts. . .
*Official Journal, decree of 10 June 1996 regarding the banned use of soldered joints containing lead additions in fixed plants for the production, treatment and distribution of water intended for human consumption.