Silver solder

Silver solder products such as solder wire/solder bar.
RoHs complaint solder products.
Different specifications accepted.

TC lead-free solder wires:
Spec
Melting
point
Tensile strength
Extensibility
Rate of spread
Usage
Sn99.95
232
20
43
70
Electroplating anode bar
Sn-Cu0.7
227
30
45
70
Lower cost, high melting point, poor wetting, low caplillarity, poor fatigue property, can be used for low requirements soldering.
Sn-Ag3.5
222
38
54
75
Higher cost,
Sn-Ag3.0-Cu0.5
217
40
58
78
Higer cost, good performance, first choice by most of factories.
Sn-Ag0.3-Cu0.5
Sn-Ag3.5-Cu0.7
Recommendation: Sn-Cu0.7, Sn-Ag3.0-Cu0.5, Sn-Ag0.3-Cu0.5




Types of Lead-free solder bars:
Common lead-free solder bar:
The most common solder bar in the lead-free solder bar series, and it will take the place of welding accessories in daily use. With stable quality and property, good solder ability and low cost.
Wave-soldering lead-free solder bar:
It was developed for wave-soldering. Added with agel exo element in the recipe, high brightness, minimum oxide residue. It is better to add Nitrogen while using wave solder pot, so as to reduce the waste from air oxidation.
High temperiture lead-free solder bars:
It is suitable for high temperature soldering place, temperature up to 400-550. The recipe is with special metallic elements which are with powerful high temperature and oxidation capacity, so the cost is much higher.