青岛铅锡材料厂

Along with the constant development of science and technology and people's requirements on life quality, lead-free solders are increasingly used to industrial field. Solders containing lead not only will pollute water resources and damage ecologic environment, but also will hurt people's nervous centralis and then cause many diseases and affect children's intelligence quotient and normal growth after being absorbed by organs. People's environmental awareness strengthens with each passing day, thus forbidden on lead has attracted the attention of international community. In order to eliminate the negative effects of the leads in tin-lead solder on human health, lead-free solders have taken the place of tin-lead solders in part of application fields.

The lead-free serial soldering rods and soldering wires newly developed by our factory have been used to the electronic, drinking and heating devices which directly affect the health of human body, such as the soldering in food, cold drink, candy, can-making and other industries and the soldering of other workpiece not allowed containing lead, so they are reputed as “Green Solders”. Moreover, our factory also stocks products with ingredients of tin-zinc, tin-copper, tin-silver, tin-bismuth, tin-indium, tin-silver-copper and tin-silver bismuth in forms of wire, bar and sheet for options, therefore, when choosing and buying, please illuminate the material and purpose of base metals soldered, so that we can help you choose adequate soft solder and joint brazing procedure to achieve perfect soldered dot and soldered joint.

1.Lead-Free Soldering Tin Rod

Designation	Principal Ingredients (%)
Designation	Sn	Ag	Cu
W-SnAg3.5AA	96.5±0.5	3.5±0.5
W-SnAg3.5Cu0.7AA	95.8±0.5	3.5±0.5	0.7±0.05
W-SnAg3Cu0.5AA	96.5±0.5	3±0.5	0.5±0.05
W-SnCu0.7AA	99.3±0.5		0.7±0.05

Remark: we can customize products with different weight according to detailed demands.

2.Lead-Free Soldering Tin Wire

Designation	Principal Ingredients (%)
Designation	Sn	Ag	Cu
W-SnAg3.5AA	96.5±0.5	3.5±0.5
W-SnAg3.5Cu0.7AA	95.8±0.5	3.5±0.5	0.7±0.05
W-SnAg3Cu0.5AA	96.5±0.5	3±0.5	0.5±0.05
W-SnCu0.7AA	99.3±0.5		0.7±0.05

Remark: wire diameter is φ0.5-φ13mm

3.Ingredient Table of Lead-Free Solder:

Designation of Lead-Free Solder	Melting Point (℃)	Characteristics	Purposes
Sn43-Bi	139	High flowability	Soldering of low-temperature electronic component
Sn70-Zn	199-311	High strength	Special metal-spraying material of film capacitor
Sn89-Zn	193	High strength and good wettability	Soldering of the electronic component with special requirement
Sn91-Zn	199	High strength	Soldering of the electronic component with special requirement
Sn95-Sb	232-240	High strength and good weidability	Soldering of the electron, electrical equipment and illmination with common requirement
Sn95-Ag5	245	Good mechanical property and soldering piece containing silver	Soldering of the piece containing silver as well as the electron, electrical equipment and illmination with common requirement
Sn95-Sb-In	229-235	High strength and good wettability	Soldering of the electron, electrical equipment and illmination with higher requirement
Sn95.6-Ag-Cu	217	Good mechanical property and soldering piece containing silver	Soldering of the piece containing silver as well as the electron, electrical equipment and illmination with common requirement
Sn95.7-Ag-Cu-Bi	214-215	Good mechanical property	Soldering of the piece containing silver as well as the electron, electrical equipment and illmination with common requirement
Sn96-Cu-Ag	227-340	Good mechanical property and soldering piece containing silver	Soldering of the electron, electrical equipment and illmination containing silver
Sn96-Cu-Ag-In	227-320	Good mechanical property and have certain wettability	Soldering of the electron, electrical equipment and illmination containing silver with high requirement
Sn96-Cu-Ag-Ni	227-350	Good mechanical property	Soldering of life and food vessels containing silver
Sn96.5-Ag	221	High strength and creep resisting	Soldering of the piece containing silver as well as the electron, electrical equipment and illmination with common requirement
Sn99-Cu	227	Good mechanical property