Experience the superior quality of Lead-free solder wire from SHAOXING TIANLONG TIN MATERIALS CO., LTD. This solder wire boasts a smooth surface, neat coiling, beautiful appearance, uniform distribution of additives, and excellent continuity. With minimal splash during welding, high mobility, great weldability, reduced smoke, minimal oxide slag, and bright welding spots, this solder wire is perfect for various applications.



Product code: solder wire
Chemical composition:
ITEM | Melting Range (ºC) | Elements (%) | |||||||||||
Sn | Ag | Cu | Sb | Pb | Cd | Fe | As | Al | Zn | Bi | TTL Impurities | ||
S-SnCu0.7 | 227 | REMAINING | 0.1 | 0.5-0.9 | 0.1 | 0.05 | 0.0012 | 0.02 | 0.03 | 0.001 | 0.001 | 0.015 | 0.2 |
S-SnCu0.3 | 227~235 | REMAINING | 0.1 | 0.2-0.4 | |||||||||
S-SnCu3 | 227~310 | REMAINING | 0.1 | 2.5-3.5 | |||||||||
S-SnAg1Cu0.5 | 217~227 | REMAINING | 0.8-1.2 | 0.3-0.7 | |||||||||
S-SnAg3Cu0.5 | 217~220 | REMAINING | 2.8-3.2 | 0.3-0.7 | |||||||||
S-SnAg4Cu0.5 | 217~219 | REMAINING | 3.8-4.2 | 0.3-0.7 | |||||||||
S-SnCu0.7Ag0.3 | 217~227 | REMAINING | 0.2-0.4 | 0.5-0.9 | |||||||||
S-SnCu4Ag1 | 217~353 | REMAINING | 0.8-1.2 | 3.5-4.5 | |||||||||
S-SnCu6Ag2 | 217~380 | REMAINING | 1.8-2.2 | 5.5-6.5 | |||||||||
S-SnSb5 | 235~240 | REMAINING | 0.1 | 0.05 |
Diameter: 0.5mm≤Ф≤2.5mm
DIAMETER (MM) | PERMISSIBLE VARIATION |
0.5-0.8 | ±0.03 |
0.8-1.2 | ±0.07 |
1.2-2.5 | ±0.1 |
Product packing:
Hard paper drum | 100-150 kg | outer diameter 550 mm, inner diameter300mm, variable height |
Hard paper drum | 20-50 kg | outer diameter 400 mm, inner diameter190mm. variable height |
Plastic spool | 15 kg | flange300mm, width100mm, center hole:55mm |
Plastic spool | 0.5-10 kg | |
bundle | 10-20 kg |

Our Lead-free solder wire is ideal for coating feedstock material in electric arc wire spray processes. It is widely used in wave soldering and manual welding of television, audio, capacitors, circuit boards, and communications equipment. Elevate your soldering experience with our premium quality solder wire!
Contact us today for more information and let's collaborate for your soldering needs!