SILVER NICKEL

The AgNi material has very good material transfer property, high conductivity, low and stable contact resistance, good workability, and good resistance against welding and arc erosion under medium and low current, and very low material transfer under DC condition. Increasing nickel content can improve the welding resistance but will also increase a little the contact resistance and temperature rise.

The welding resistance and arc erosion resistance can be obviously improved by addition of a small quantity of additives with a special process.

Mechanical and Physical Properties of the Materials

Designation	Material	Density g/cm³	Resistivity μΩ·cm	Hardness HV 0.3	Tensile Strength MPa	Elongation %	Applications
SNB28	AgNi(10)	10.30	1.90	90~105	320~360	3.0	Middle and small AC contactors, relays and switches
SNB27	AgNi(15)	10.20	2.00	90~105	320~360	2.5	Middle and small AC contactors, relays and switches
SNB02	AgNi(12)T	10.30	1.95	95~110	330~370	2.5	Universal relays
SNB07	AgNi(15)T	10.25	2.05	100~115	330~370	2.5	AC contactors (for air conditioners)
SNB29	AgNi(20)	10.10	2.10	75~90	260~320	15	AC contactors, thermal protection devices

Microsections