Features

AgSnO₂-In₂O₃ is an electrical contact material that the SnO₂ and In₂O₃ in silver matrix help to improve the physical and electrical properties of the material. It has the following merits:

1.Excellence fusion welding resistance and ablative resistance.

2.Compared with AgCdO, the AgSnO₂-In₂O₃ has better thermal stability and higher hardness, especially the acicular oxide produced during internal oxidation is perpendicular to the surface of contact, which is beneficial to the contact properties.

3.In₂O₃ can help improve the oxidation and processing properties of Sn.

Property and application

It is produced by internal oxidation method.

Material	Physical properties			Metallography
	Density (g/cm3)	Resistivity (μΩ·cm)	Hardness（HB）
AgSnO2(7) -In2O3(3)	≥9.80	≤3.30	≥75
AgSnO2(8) -In2O3(4)	≥9.70	≤3.40	≥75
AgSnO2(9) -In2O3(4)	≥9.60	≤3.50	≥80

The product is mainly applied in low-voltage electrical appliance, and is particularly used in automotive DC electrical appliances.

The oxide particles are locally graded in the material, it is mainly used to produce wires or plates.

Material	Physical properties			Metallography
	Resistivity (μΩ·cm)	Hardness（HV）	Density ( g/cm3)
Ag(92)SnO2-In2O3	≤1.95	≥85	≥9.90
Ag(90)SnO2-In2O3	≤2.25	≥90	≥9.80
Ag(88)SnO2-In2O3	≥≤2.35	≥95	≥9.65
Ag(85)SnO2-In2O3	≥≤2.55	≥100	≥9.55

The products are mainly applied in relay, contactor etc.