These materials combine excellent conduc-
tivity and good chemical resistance without
the risk stress-induced cracking. This protects the contact area
against corrosion.
The special tin layer, which the standard
layer for all current-carrying parts WAGO
products, ensures perfect long-term protec-
tion against corrosive substances.
At room temperatures approximately 20°C
(68°F), the material resistant salt solu-
tions 30% and dilute phosphoric acids
up 30%.
The thick tin layer also ensures good solder-
ability both PCB terminal block and con-
nector solder pins.
. Further-
more, these layers provide gas-tight con-
tact that ensures durable transition
resistance.g.
WAGO only accepts deliveries chrome
nickel spring steel against certificates of
conformity and after select material tests
have been performed.5%.
Even after decades use, galvanic corro-
sion between the chrome nickel spring steel
(in connection with the contact materials
used WAGO) and the connected copper
conductors has been detected.
At the clamping unit, the conductor is
embedded into the soft tin layer via high con-
tact pressure., sulfur dioxide,
hydrogen sulfide).wago. Samples
loaded with 500 N/mm² temperature of
250°C (482°F) showed relaxation only
1.com
WAGO Rail-Mount Terminal Block Systems
Material Specifications
Material Specifications
Contact Materials
Contact Materials
Clamping Spring Material
Hard and extra-hard electrolytic copper
(ECu), well extra-hard copper alloys are
the standard materials used for the cur-
rent-carrying parts all WAGO products.
Every WAGO clamping spring made of
high-quality, accurately tested austenitic
chrome nickel steel (CrNi) with high tensile
strength, which boasts proven corrosion
resistance through long-term usage.
The relaxation the material function of
time and surrounding temperatures to
105°C (221°F) can ignored.
This treatment reduces internal stress due to
the material’s mechanical deformation, which
may result slight brown discoloration of
the spring surface.32
www.
It resistant sea spray, city pollutants and
industrial emissions (e.
In certain product lines, the clamping springs
are thermally treated temperatures
between 350°C (662°F) and 420°C (788°F)
after production
