1. Scope of application

The lead-free solder products can be applied to the strict environmental protection requirements, manual and automatic welding, high purity of raw materials and refined, is widely used in environmental protection type electronic assembly industry. Product standard according to JIS-Z-3282 marking specifications.

Two. Product information

(1) Name: lead-free pure tin ball

Mark (2): Sn99.96

(3) the shape of the product: solid circular \ / semicircle

Chemical composition of three.

(1): Sn99.96

(2) alloy content: Sn: Cu: 0.004 ± 0.1 allowance

(3) the impurity content is not more than%: Pb: 0.1 Sb: 0.1 Bi: 0.1 Fe: 0.02 Al: 0.002

Cd 0.002

The four dimension of material standard.

(1) appearance: Circular \ / semicircle

Five. The material properties

(1) the melting point (217 ~ 220 ℃)

(2) the proportion of g\/cm3 7.34

(3) the tensile strength of Mpa 32

(4) 109 ohm.m 100~150 resistivity

The physical properties of six.

(1) the solidus temperature: 217 ℃

(2) the liquidus temperature: 220 ℃

The tensile strength (3): 32Mpa

(4) extending rate: 22%

(5) the hardness of HV: 14

Density (6): 7.34g\/cm3

(7): 0.17J\/Kg ℃ heat capacity

The coefficient of thermal expansion (8): 1.79 x 105 @30~100 2.3 x 105 ℃, @100~150 ℃

(9) the wetting time: 0.7 sec.

(10) the maximum wetting force: 0.2mN\/mm

Seven. The detection method

The laboratory with German import direct-reading spectrometer (SPECTRO MAXx) test

Eight packaging methods.

(1) packing box: "LEAD FREE SOLDER" are printed on the surface of lead-free solder lead mark and cover types

(3) weight: net weight (20 ± 0.01) kg / box