SOFT SOLDERS

 

Soft solders are metallic additional material that is used to connect metallic parts by means of soldering. The temperature of solders is lower that the melting temperature of the parts being soldered; for soft solders it is lower than 450°C.
The long–term experience and modern technology enable us to produce solders corresponding with strictest European standards.
We make a wide range of shapes and chemical compositions of soft solders for electronics, electrotechnics, and industrial soldering.

 

pájky   pájka   anody

 

Formed solders »

Cast solders (tinsmith's) »

 

 

Formed solders - Range of products

 

 

Lead Free

 

 

Alloy Standard Melting
temperature
Range form of product
Tube Wire Press
moulded
rod
Strip Foil
Sn99,75 PN 681-305 232°C   X X X X
Sn96Ag4 ČSN EN ISO 9453 221°C X X X X X
Sn97Ag3 ČSN EN ISO 9453 221-223°C   X X    
Sn95,5Ag3,
8Cu0,7
ČSN EN ISO 9453 217-218°C X X X   X
Sn96,5Ag3Cu0,5 ČSN EN ISO 9453 217-220°C X X X   X
Sn97Cu3 ČSN EN ISO 9453 230-250°C X X X    
Sn99Ag0,
3Cu0,7
  217-228°C X   X    
Sn99,3Cu0,7 ČSN EN ISO 9453 230-240°C X X X    
Sn70Zn30 PN 681-226 200-320°C       X  

 

 

Basic soldering Pb/Sn alloys

 

Alloy Standard Melting
temperature
Range form of product
Tube Wire Press
moulded
rod
Strip Foil
Sn63Pb37 ČSN EN ISO 9453 183°C X X X X X
Sn60Pb40 ČSN EN ISO 9453 183-190°C X X X X X
Sn50Pb50 ČSN EN ISO 9453 183-215°C X X   X X
Pb60Sn40 ČSN EN ISO 9453 183-235°C X X     X
Pb70Sn30 ČSN EN ISO 9453 183-255°C X X      
Pb75Sn25 PN 681-220 183-262°C   X      
Pb80Sn20 ČSN EN ISO 9453 183-280°C   X      
Sn62Pb37Cu1 PN 681-214 183°C X X      
Sn60Pb38Cu2 ČSN EN ISO 9453 183-190°C X        
Sn62,5Pb36Ag1,5 PN 681-215 179°C X        
Sn62Pb36Ag2 ČSN EN ISO 9453 178-190°C X   X    
Sn57Pb39Ag4 PN 681-111 175-180°C   X      

 

 

Special soldering alloys

 

Alloy Standard Melting
temperature
Range form of product
Tube Wire Press
moulded
rod
Strip Foil
PbSn5,5Ag2,5 PN 681-111 286-301°C   X      
PbSn2,5Ag2,5 PN 681-111 300-305°C   X      
PbSn15Ag1 PN 681-111 200-280°C   X      
PbSn20Zn4,5 PN681-117     X      
PbSn25Zn1,5 PN681-121     X      
Pb48Sn32Bi PN 681-207 140-160°C X        
Sn50Pb32Cd ČSN EN 29453 145°C   X      

 

The world trend of keeping the cleanest environment is also influencing the use of soft solders. There is a tendency to use Lead Free soft solders. New European legislation about using lead-free solders has held from 2006.

 

 

Soldering fluxes for tube solders

 

Trade
name
Type according
to the CSN
standard
EN 29454-1
Type according
to DIN 8511 
Standard content
of soldering
flux (%)
Use
MTL401 1.1.3.B F-SW32 2 - 2,5 Rinseless soldering flux
MTL461 1.1.3.B F-SW32 1,4 - 2

Rinseless soldering flux

for sophisticated electronics

L3 1.1.3.B F-SW32 1,25 - 1,75

Sophisticated electronics,

SMD

F1 1.1.2.B F-SW26 2 - 2,5 Rinseless soldering flux
for sophisticated electronics
MTL408 1.1.2.B F-SW26 2 - 2,5 Rinseless soldering flux
MTL468 1.1.2.B F-SW26 1,4 - 2 Rinseless soldering flux
for sophisticated electronics
MT-SW 24/2 2.1.2.B F-SW24 1,5 -2,5 For non-ferrous metals
soldering, mainly soldering of zinc
MT-SW 24/3 2.1.2.B F-SW24 1,5 -2,5 For non-ferrous metals soldering,
mainly soldering of zinc
MTV 125 2.1.2.B F-LW3 1,8 - 2,3 Soldering of nickel, steel,
non-ferrous metals, rinse necessary
FB 12-11 3.1.1.B F-SW21 2,5 - 3 Connections that are soldered
with difficulty, rinse necessary
MTV009 3.1.1.B F-SW12 2 - 3,5 Torch soldering upto 750 °C,
rinseable
MTV009B 3.1.1.B F-SW12 2,5 - 3,5 Torch soldering, nickel, antimony,
steel, rinse necessary
MTR-661T 3.1.1.B F-SW12 1,8 - 2,7 Sophisticated electronics, SMD

 

Standard diameters of soldering wires and tube solders

Diameter (mm): 0,6     0,8     1,0     1,5     2,0     2,5     3,0     4,0     5,0     6,0

Normally, a tube solder is made in one strand. It is possible to arrange the production of two or five strands solder.

 

 

Packing of soldering wires and tube solders
C26 plastic reel Ø 26 mm 100 g Standardly
C50 plastic reel Ø 50 mm 250 g Standardly
C63 plastic reel Ø 63 mm 500 g Standardly
C80 plastic reel Ø 80 mm 1000 g Standardly
C100 plastic reel Ø 100 mm 2000 g if prearranged
C160 plastic reel Ø 160 mm 8000 g if prearranged
C300 plastic reel Ø 300 mm 15000 g if prearranged

 

 

Each reel has a label with the following data:
soldering alloy type + standard
solder diameter
weight (only under 1000g)
number of smelting
EAN code
trade-mark sOlder
web site
If agreed, it is possible to add additional information on the label.



Solders for machine soldering

Basic alloys: S-Sn63Pb37E; S-Sn60Pb40E; S-Sn62Pb36Ag2; S-Sn97Ag4; Sn95,5Ag3,8Cu0,7; Sn99,3Cu0,7; Sn96,5Ag3Cu0,5; Sn97Ag3; Sn99Ag0,3Cu0,7

 

Form of product Size Weight Packing
rod 13x24x350 mm 0,8 -1,0 kg carton cca 30 kg
rod 13x24x500 mm 1,2 - 1,5 kg carton cca 20 kg
rod ø 14x500 mm 0,65 - 0,8 kg carton cca 20 kg
rod ø 8x350 mm 0,13 - 0,16 kg carton cca 30 kg
wire ø 6 mm 15 kg reel C300

 

The production of these solders is based on usage of metals with the highest purity. The solders for machine soldering are manufactured by press moulding technology that prevents possible internal oxidation of final products. This procedure ensures very good wetting power of produced rods, as well as very good soldering rate and decreased consumption of solder during whole manufacturing process.

Deoxidising additive for Pb/Sn soldering baths
Alloy S–Sn60PbP with melting temperature between 183 and 190°C. It is used as an additive into soldering baths, where it strongly diminishes the creation of dross, decreases the risk of bridge bonds and stalactites creation. The additive is delivered in the form of pellets, weighing approximately 5 grams.

Deoxidising additive for Lead-free soldering baths
Alloy SnP with melting temperature between 235 and 500°C. It is used as an additive into soldering baths, where it strongly diminishes the creation of dross, decreases the risk of bridge bonds and stalactites creation. The additive is delivered in the form of pellets, weighing approximately 5 grams.


Cast solders (tinsmith’s)

 

Cast solders are used in traditional hand soldering, e. g. of eaves, coolers etc., and in bath soldering and in regular soldering for the production of metal wares.

 

Soldering alloys

 

Soldering alloy Top melting
temperature °C
(liquidus)
Low melting
temperature °C
(solidus)
S-Pb92Sn8 305 280
S-Pb82Sn18 270 183
S-Pb75Sn25 260 183
S-Pb70Sn30 255 183
S-Pb60Sn40 235 183
S-Pb50Sn50 215 183
S-Sn60Pb40 190 183
S-Sn90Pb10 220 183
S-Sn99,75 232 232

The temperatures are given only for information.

 

 

The cast solders are delivered in the following forms

 

Form Dimension Weight Packing
Rod TRIANGLE 10x10x10x500 mm 0,2-0,3 kg carton app. 10 kg, faggot app. 25 kg
Block 70x140x600 mm cca 30 kg in bulk on a pallet
Block 20x50x240 mm cca 4 kg in bulk on a pallet

 

 

Low fusing alloys

 

Alloy Trade name Informative range
of meltning
temperature °C
Bi45Pb23Sn8In19Cd5 Alloy 47 47
Bi49Pb18Sn12In21 Alloy 58 58
Bi50Pb25Sn12Cd  Wood's metal 2 60-64
Bi50Pb27Sn13Cd  Wood's metal1 68-72
Bi50Pb43Cd Biola 3 80-84
Bi50Sn25Pb Rose's metal 92-96
Bi50Sn16Pb Biola 4 94-98
Bi50Pb28Sn Biola 5 94,5-107
Bi55Pb32Sn Molot's metal 96-98
Pb40Bi20Sn Stabia 5 96-151
Bi60Pb20Sn Biola 2 96,5-114
Pb25Bi25Sn Stabia 6 97-161
Pb45Bi10Sn Stabia 4 97-169
Pb21Bi8Sn66Cd Stabia 7 98-170
Bi40Pb30Sn Biola 8 98-170
Pb34Bi11Sn Stabia 2 99-131
Bi48Sn14Sb9Pb Biola 7 102-108
Bi55Pb30Sb5Sn Biola 10 103-110
Bi35Pb35Sn Biola 9 104-123
Bi74Pb7Sn Biola 1 104-163
Bi58Sn Biola 11 139
Pb48Sn32Bi Plumbia 6 140-160
Bi8Sn57Pb Stabia 1 139-178
Pb60Bi20Sn Plumbia 4 148-193
Bi13Sn50Pb Stabia 3 136-171
Pb57Bi8Sn Plumbia 5 174-214
Pb73Bi23Sn3Zn Plumbia 3 183-224
Pb78Bi16Sb Plumbia 8 204-208
Pb78Bi12Sb Plumbia 7 178-226
Pb80Sn10Bi Plumbia 1 215-221
Pb68Sb26Sn Columbia kov 238-252
Pb78Bi14Sn Plumbia 2 241-260
Sn73Bi1Cd1Sb Imolit 243-288

 

 

Form of delivery:

in rods 10 x 10 x 10 x 500 mm
After preparatory discussion with the technical department, it is possible to produce also alloys with a different chemical composition and shape, according to a customer's request.

 

Alloys for casting

 

Alloys Trade name
PbSn42,5Sb5Cu0,1 Alloy No. 2
SnSb3Cu2 SnSb3Cu2
SnSb2,5Cd0,5Pb9 Alloy SU
PbSb8Sn2 PbSb8Sn2

 

Form of delivery: in blocks 130 x 50 x 340 mm, weighing 3kg, in bulk in metal boxes.
After preparatory discussion with the technical department, it is possible to produce also different types of alloys according to a customer's request.

 

Contacts

 

    Telephone Fax E-mail
Ing. Konstantin
Sigačev
Trade Group
Manager
318 470 238 318 470 244