Silver Alloys - AGSNO2

Silver Tin Oxide

  EFO EFO EFO EFO

EFO

EMO

EMB

CCB

Oxide content (% massic)

10

8 - 10 – 12

8 – 10 - 12 – 14

12 - 14

SnO2 grain size

< 0,5 μ

2 to 5 μ

SnO2 grain shape

Granular

Manufacturing process

Sintered – Extruded Die Compacting

 

Designation

Noble Technologies manufactures a wide range of material and so a detailed description is essential, which must include :

AgSnO2
  • 1st letter : Manufacturing process : Extrusion or die Compacting
  • 2nd letter : Medium, Fine, Chemical (the grain size is defined by the chemical process)
  • 3rd letter : O without doping agent, B for Bismuth oxide
  • 8-10-12-14 for total oxides content

E

M

B

8

 

Characteristics

 
EFO
EMO
EMB
CCB

Oxide content (% massic)

10
8
10
12
8
10
12
14
12
14

Theorical density g/cm³

9.98
10.08
9.98
9.88
10.12
10.03
9.95
9.87
9.95
9.85

HV1 (annealed)

95
55
60
65
60
65
70
75
95
105

IACS (%)

80
87.5
83
78
88
82.5
78.5
74
80
72

 

Electrical test results

Comparison of the characteristics of AgSnO2and AgCdO

Erosion-AC4-50A Contact-resistance-AC3-12A

Erosion AC4 50A

Contact resistance AC3 12A

Welding-force-AC3-50-A Erosion-of-all-bridges

Welding force AC3 50 A

Erosion of all bridges

Electrical tests performed on test machines or on switchgear confirm the excellent resistanceagainst erosion and the low welding tendency of AgSnO2 as compared with AgCdO. Temperature rise is similar.

Applications



Application field

Any type of switchgear requiring breaking capacity in AC or DC at 10 to 1 000 A and 24 to 600 V.
This material is recommended for its low welding tendency and for its resistance stability when subjected to intense make and break cycles.

Switchgear type

  • Relays
  • Contactors
  • Engine starters
  • Breakers

Uses

  • Industrial automatisms
  • Transport : cars, railways
  • Lifts, forklift trucks
  • Regulating devices, thermostats

Other conditions

We manufacture according to our customers' specifications. Our technicians are readily available to discuss contact forms, dimensions and brazing requirements.